TI CC1111EMK868-915 Low-power soc (system-on-chip) with mcu, memory, sub-1 ghz rf transceiver, and usb controller Datasheet

CC1110Fx / CC1111Fx
Low-Power SoC (System-on-Chip) with MCU, Memory,
Sub-1 GHz RF Transceiver, and USB Controller
Applications
• Low-power SoC wireless applications
operating in the 315/433/868/915 MHz
ISM/SRD bands
• Wireless alarm and security systems
• Industrial monitoring and control
• Wireless sensor networks
•
•
•
•
AMR - Automatic Meter Reading
Home and building automation
Low power telemetry
CC1111Fx: USB dongles
Product Description
The CC1110Fx/CC1111Fx is a true low-power sub1 GHz system-on-chip (SoC) designed for lowpower
wireless
applications.
The
CC1110Fx/CC1111Fx combines the excellent
performance of the state-of-the-art RF
transceiver CC1101 with an industry-standard
enhanced 8051 MCU, up to 32 kB of in-system
programmable flash memory and up to 4 kB of
RAM, and many other powerful features. The
small 6x6 mm package makes it very suited
for applications with size limitations.
VDD (2.0 - 3.6 V)
DIGITAL
DCOUPL
ANALOG
MIXED
RESET_N
XOSC_Q2
XOSC_Q1
P2_4
P2_3
P2_2
P2_1
P2_0
P1_7
P1_6
P1_5
P1_4
P1_3
P1_2
The CC1110Fx/CC1111Fx is highly suited for
systems where very low power consumption is
required. This is ensured by several advanced
low-power operating modes. The CC1111Fx adds
a full-speed USB 2.0 interface to the feature
set of the CC1110Fx. Interfacing to a PC using
the USB interface is quick and easy, and the
high data rate (12 Mbps) of the USB interface
avoids the bottlenecks of RS-232 or low-speed
USB interfaces.
P1_1
P1_0
P0_7
P0_6
P0_5
P0_4
P0_3
P0_2
P0_1
P0_0
RF_P
DP
RF_N
DM
Key Features
• Radio
o
o
o
o
o
o
o
High-performance RF transceiver based on
the market-leading CC1101
Excellent receiver selectivity and blocking
performance
High sensitivity (−110 dBm at 1.2 kBaud)
Programmable data rate up to 500 kBaud
Programmable output power up to 10 dBm
for all supported frequencies
Frequency range: 300 - 348 MHz, 391 - 464
MHz and 782 - 928 MHz
Digital RSSI / LQI support
• MCU, Memory, and Peripherals
o
o
o
o
o
o
o
o
o
o
o
o
o
• Low Power
o
o
o
Low current consumption (RX: 16.2 mA @
1.2 kBaud, TX: 15.2 mA @ −6 dBm output
power)
0.3 µA in PM3 (operating mode with the
lowest power consumption, only external
interrupt wakeup)
0.5 µA in PM2 (operating mode with the
second lowest power consumption, timer or
external interrupt wakeup)
High performance and low power 8051
microcontroller core.
Powerful DMA functionality
8/16/32 KB in-system programmable flash,
and 1/2/4 KB RAM
Full-Speed USB Controller with 1 KB FIFO
(CC1111Fx )
128-bit AES security coprocessor
7 - 12 bit ADC with up to eight inputs
2
I S interface
Two USARTs
16-bit timer with DSM mode
Three 8-bit timers
Hardware debug support
21 (CC1110Fx ) or 19 (CC1111Fx ) GPIO pins
SW compatible with CC2510Fx/CC2511Fx
• General
SWRS033F
o
o
Wide supply voltage range (2.0V - 3.6V)
RoHS compliant 6x6 mm QLP36 package
Page 1 of 242
CC1110Fx / CC1111Fx
Table of Contents
1
2
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
4
5
5.1
5.2
6
7
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
7.11
7.12
7.13
7.14
7.15
7.16
8
9
9.1
9.2
10
10.1
10.2
10.3
10.4
10.5
10.6
11
11.1
11.2
11.3
11.4
11.5
12
12.1
12.2
12.3
12.4
ABBREVIATION ...................................................................................................................................... 4
REGISTER CONVENTIONS .................................................................................................................. 5
KEY FEATURES (IN MORE DETAILS) .............................................................................................. 6
HIGH-PERFORMANCE AND LOW-POWER 8051-COMPATIBLE MICROCONTROLLER....................................... 6
8/16/32 KB NON-VOLATILE PROGRAM MEMORY AND 1/2/4 KB DATA MEMORY ........................................ 6
FULL-SPEED USB CONTROLLER (CC1111FX )................................................................................................. 6
I2S INTERFACE .............................................................................................................................................. 6
HARDWARE AES ENCRYPTION/DECRYPTION ............................................................................................... 6
PERIPHERAL FEATURES ................................................................................................................................ 6
LOW POWER ................................................................................................................................................. 6
SUB-1 GHZ RADIO WITH BASEBAND MODEM .............................................................................................. 7
ABSOLUTE MAXIMUM RATINGS ...................................................................................................... 8
OPERATING CONDITIONS .................................................................................................................. 8
CC1110FX OPERATING CONDITIONS ............................................................................................................... 8
CC1111FX OPERATING CONDITIONS ............................................................................................................... 8
GENERAL CHARACTERISTICS.......................................................................................................... 9
ELECTRICAL SPECIFICATIONS ...................................................................................................... 10
CURRENT CONSUMPTION ........................................................................................................................... 10
RF RECEIVE SECTION ................................................................................................................................. 14
RF TRANSMIT SECTION .............................................................................................................................. 18
CRYSTAL OSCILLATORS ............................................................................................................................. 20
32.768 KHZ CRYSTAL OSCILLATOR ........................................................................................................... 21
LOW POWER RC OSCILLATOR .................................................................................................................... 21
HIGH SPEED RC OSCILLATOR .................................................................................................................... 22
FREQUENCY SYNTHESIZER CHARACTERISTICS ........................................................................................... 22
ANALOG TEMPERATURE SENSOR ............................................................................................................... 23
7 - 12 BIT ADC ........................................................................................................................................... 23
CONTROL AC CHARACTERISTICS ............................................................................................................... 25
SPI AC CHARACTERISTICS ......................................................................................................................... 26
DEBUG INTERFACE AC CHARACTERISTICS ................................................................................................ 27
PORT OUTPUTS AC CHARACTERISTICS ...................................................................................................... 27
TIMER INPUTS AC CHARACTERISTICS ........................................................................................................ 28
DC CHARACTERISTICS ............................................................................................................................... 28
PIN AND I/O PORT CONFIGURATION ............................................................................................ 29
CIRCUIT DESCRIPTION ..................................................................................................................... 33
CPU AND PERIPHERALS ............................................................................................................................. 34
RADIO ........................................................................................................................................................ 36
APPLICATION CIRCUIT ..................................................................................................................... 36
BIAS RESISTOR ........................................................................................................................................... 36
BALUN AND RF MATCHING ........................................................................................................................ 36
CRYSTAL .................................................................................................................................................... 36
USB (CC1111FX) .......................................................................................................................................... 37
POWER SUPPLY DECOUPLING ..................................................................................................................... 37
PCB LAYOUT RECOMMENDATIONS ............................................................................................................ 40
8051 CPU .................................................................................................................................................. 41
8051 INTRODUCTION .................................................................................................................................. 41
MEMORY .................................................................................................................................................... 42
CPU REGISTERS ......................................................................................................................................... 54
INSTRUCTION SET SUMMARY ..................................................................................................................... 56
INTERRUPTS................................................................................................................................................ 60
DEBUG INTERFACE............................................................................................................................. 70
DEBUG MODE ............................................................................................................................................. 70
DEBUG COMMUNICATION........................................................................................................................... 70
DEBUG LOCK BIT ....................................................................................................................................... 71
DEBUG COMMANDS.................................................................................................................................... 72
SWRS033F
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CC1110Fx / CC1111Fx
13
13.1
13.2
13.3
13.4
13.5
13.6
13.7
13.8
13.9
13.10
13.11
13.12
13.13
13.14
13.15
13.16
14
14.1
14.2
14.3
14.4
14.5
14.6
14.7
14.8
14.9
14.10
14.11
14.12
14.13
14.14
14.15
14.16
14.17
14.18
14.19
15
15.1
16
17
18
18.1
18.2
18.3
18.4
19
20
21
21.1
21.2
22
23
PERIPHERALS....................................................................................................................................... 76
POWER MANAGEMENT AND CLOCKS.......................................................................................................... 76
RESET ......................................................................................................................................................... 83
FLASH CONTROLLER .................................................................................................................................. 84
I/O PORTS ................................................................................................................................................... 90
DMA CONTROLLER ................................................................................................................................. 101
16-BIT TIMER, TIMER 1............................................................................................................................. 113
MAC TIMER (TIMER 2) ............................................................................................................................ 125
SLEEP TIMER ............................................................................................................................................ 127
8-BIT TIMERS, TIMER 3 AND TIMER 4 ....................................................................................................... 130
ADC......................................................................................................................................................... 141
RANDOM NUMBER GENERATOR ............................................................................................................... 147
AES COPROCESSOR .................................................................................................................................. 148
WATCHDOG TIMER ................................................................................................................................... 151
USART .................................................................................................................................................... 153
I2S ............................................................................................................................................................ 163
USB CONTROLLER ................................................................................................................................... 170
RADIO.................................................................................................................................................... 186
COMMAND STROBES ................................................................................................................................ 186
RADIO REGISTERS .................................................................................................................................... 188
INTERRUPTS.............................................................................................................................................. 188
TX/RX DATA TRANSFER ......................................................................................................................... 190
DATA RATE PROGRAMMING ..................................................................................................................... 191
RECEIVER CHANNEL FILTER BANDWIDTH................................................................................................ 191
DEMODULATOR, SYMBOL SYNCHRONIZER, AND DATA DECISION ............................................................ 192
PACKET HANDLING HARDWARE SUPPORT ............................................................................................... 193
MODULATION FORMATS........................................................................................................................... 196
RECEIVED SIGNAL QUALIFIERS AND LINK QUALITY INFORMATION ......................................................... 197
FORWARD ERROR CORRECTION WITH INTERLEAVING .............................................................................. 200
RADIO CONTROL ...................................................................................................................................... 201
FREQUENCY PROGRAMMING .................................................................................................................... 204
VCO......................................................................................................................................................... 205
OUTPUT POWER PROGRAMMING .............................................................................................................. 205
SHAPING AND PA RAMPING ..................................................................................................................... 206
SELECTIVITY ............................................................................................................................................ 207
SYSTEM CONSIDERATIONS AND GUIDELINES ........................................................................................... 208
RADIO REGISTERS .................................................................................................................................... 211
VOLTAGE REGULATORS ................................................................................................................ 228
VOLTAGE REGULATOR POWER-ON ........................................................................................................... 228
RADIO TEST OUTPUT SIGNALS..................................................................................................... 228
REGISTER OVERVIEW ..................................................................................................................... 230
PACKAGE DESCRIPTION (QLP 36)................................................................................................ 234
RECOMMENDED PCB LAYOUT FOR PACKAGE (QLP 36) .......................................................................... 235
SOLDERING INFORMATION........................................................................................................................ 235
TRAY SPECIFICATION ............................................................................................................................... 235
CARRIER TAPE AND REEL SPECIFICATION ................................................................................................ 236
ORDERING INFORMATION............................................................................................................. 236
REFERENCES ...................................................................................................................................... 237
GENERAL INFORMATION............................................................................................................... 238
DOCUMENT HISTORY ............................................................................................................................... 238
PRODUCT STATUS DEFINITIONS ............................................................................................................... 240
ADDRESS INFORMATION ................................................................................................................ 241
TI WORLDWIDE TECHNICAL SUPPORT..................................................................................... 241
SWRS033F
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CC1110Fx / CC1111Fx
1
Abbreviation
∆Σ
Delta-Sigma
LFSR
Linear Feedback Shift Register
ADC
Analog to Digital Converter
LNA
Low-Noise Amplifier
AES
Advanced Encryption Standard
LO
Local Oscillator
AGC
Automatic Gain Control
LQI
Link Quality Indication
ARIB
Association of Radio Industries and
Businesses
LSB
Least Significant Bit / Byte
MAC
Medium Access Control
ASK
Amplitude Shift Keying
MCU
Microcontroller Unit
BCD
Binary Coded Decimal
MISO
Master In Slave Out
BER
Bit Error Rate
MOSI
Master Out Slave In
BOD
Brown Out Detector
MSB
Most Significant Bit / Byte
CBC
Cipher Block Chaining
NA
Not Applicable
CBC-MAC
Cipher Block Chaining Message
Authentication Code
OFB
Output Feedback (encryption)
OOK
On-Off Keying
PA
Power Amplifier
CCA
Clear Channel Assessment
CCM
Counter mode + CBC-MAC
CFB
Cipher Feedback
CFR
Code of Federal Regulations
CMOS
Complementary Metal Oxide Semiconductor
CPU
Central Processing Unit
CRC
Cyclic Redundancy Check
CTR
Counter mode (encryption)
DAC
Digital to Analog Converter
DMA
Direct Memory Access
DSM
Delta-Sigma Modulator
ECB
Electronic Code Book
EM
Evaluation Module
ENOB
Effective Number of Bits
EP{0 - 5}
USB Endpoints 0 - 5
ESD
Electro Static Discharge
ESR
Equivalent Series Resistance
ETSI
European Telecommunications Standard
Institute
PCB
Printed Circuit Board
PER
Packet Error Rate
PLL
Phase Locked Loop
PM{0 - 3}
Power Mode 0 -3
PMC
Power Management Controller
POR
Power On Reset
PQI
Preamble Quality Indicator
PWM
Pulse Width Modulator
QLP
Quad Leadless Package
RAM
Random Access Memory
RCOSC
RC Oscillator
RF
Radio Frequency
RoHS
Restriction on Hazardous Substances
RSSI
Receive Signal Strength Indicator
RX
Receive
SCK
Serial Clock
SFD
Start of Frame Delimiter
Federal Communications Commision
SFR
Special Function Register
FIFO
First In First Out
SINAD
Signal-to-noise and distortion ratio
GPIO
General Purpose Input / Output
SPI
Serial Peripheral Interface
High Speed Serial Debug
SRAM
Static Random Access Memory
Software
FCC
HSSD
Hardware
SW
I/O
Input / Output
T/R
Transmit / Receive
I/Q
In-phase / Quadrature-phase
TX
Transmit
IS
Inter-IC Sound
UART
Universal Asynchronous Receiver/Transmitter
IF
Intermediate Frequency
USART
IOC
I/O Controller
Universal Synchronous/Asynchronous
Receiver/Transmitter
ISM
Industrial, Scientific and Medical
ISR
Interrupt Service Routine
IV
Initialization Vector
JEDEC
Joint Electron Device Engineering Council
KB
Kilo Bytes (1024 bytes)
kbps
kilo bits per second
HW
2
USB
Universal Serial Bus
VCO
Voltage Controlled Oscillator
VGA
Variable Gain Amplifier
WDT
Watchdog Timer
XOSC
Crystal Oscillator
SWRS033F
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CC1110Fx / CC1111Fx
2
Register Conventions
Each SFR is described in a separate table. The table heading is given in the following format:
REGISTER NAME (SFR Address) - Register Description.
Each RF register is described in a separate table. The table heading is given in the following format:
XDATA Address: REGISTER NAME - Register Description
All register descriptions include a symbol denoted R/W describing the accessibility of each bit in the
register. The register values are always given in binary notation unless prefixed by ‘0x’, which
indicates hexadecimal notation.
Symbol
Access Mode
R/W
Read/write
R
Read only
R0
Read as 0
R1
Read as 1
W
Write only
W0
Write as 0
W1
Write as 1
H0
Hardware clear
H1
Hardware set
Table 1: Register Bit Conventions
SWRS033F
Page 5 of 242
CC1110Fx / CC1111Fx
3
Key Features (in more details)
3.1
High-Performance and Low-Power
8051-Compatible Microcontroller
• Support for µ-law compression and
expansion
• Typically used to connect to external
DAC or ADC
• Optimized 8051 core which typically
gives 8x the performance of a standard
8051
3.5
• Two data pointers
• In-circuit interactive debugging is
supported by the IAR Embedded
Workbench through a simple two-wire
serial interface
Hardware AES Encryption/Decryption
• 128-bit AES supported in hardware
coprocessor
3.6
• SW compatible with CC2510Fx/CC2511Fx
Peripheral Features
• Powerful DMA Controller
• Power On Reset/Brown-Out Detection
3.2
8/16/32 KB Non-volatile Program
Memory and 1/2/4 kB Data Memory
• ADC with eight individual input
channels, single-ended or differential
(CC1111Fx has six channels) and
configurable resolution
• 8, 16, or 32 KB of non-volatile flash
memory,
in-system
programmable
through a simple two-wire interface or
by the 8051 core
• Minimum flash memory
1000 write/erase cycles
• Programmable watchdog timer
• Five timers: one general 16-bit timer
with DSM mode, two general 8-bit
timers, one MAC timer, and one sleep
timer
endurance:
• Programmable read and write lock of
portions of flash memory for software
security
• Two
programmable
USARTs
for
master/slave SPI or UART operation
• 1, 2, or 4 kB of internal SRAM
3.3
• 21 configurable general-purpose digital
I/O-pins (CC1111Fx has 19)
Full-Speed USB Controller (CC1111Fx )
• 5 bi-directional endpoints in addition to
control endpoint 0
• Full-Speed, 12 Mbps transfer rate
• Random number generator
3.7
and
• Four flexible power modes for reduced
power consumption
• 1024 bytes of dedicated endpoint FIFO
memory
• System can wake up on external
interrupt or when the Sleep Timer
expires
• Support for Bulk, Interrupt,
Isochronous endpoints
• 8 - 512 byte data packet size supported
• Configurable FIFO size for IN and OUT
direction of endpoint
3.4
Low Power
• 0.3 µA current consumption in PM3,
where external interrupts can wake up
the system
2
I S Interface
• Industry standard I2S interface
transfer of digital audio data
• 0.5 µA current consumption in PM2,
where external interrupts or the Sleep
Timer can wake up the system
for
• Full duplex
• Mono and stereo support
• Configurable sample rate and sample
size
SWRS033F
• Low-power fully static CMOS design
• System clock source is either a high
speed crystal oscillator (26 - 27 MHz for
CC1110Fx and 48 MHz for CC1111Fx) or a
high speed RC oscillator (13 - 13.5 MHz
for CC1110Fx and 12 MHz for CC1111Fx).
Page 6 of 242
CC1110Fx / CC1111Fx
The high speed crystal oscillator must
be used when the radio is active.
• Clock source for ultra-low power
operation can be either a low-power RC
oscillator or an optional 32.768 kHz
crystal oscillator
• Very fast transition to active mode from
power modes enables ultra low average
power consumption in low duty-cycle
systems
3.8
• Supports use of DMA for both RX and
TX
resulting
in
minimal
CPU
intervention even on high data rates
•
Programmable channel filter bandwidth
• 2-FSK, GFSK, MSK, ASK, and OOK
modulation formats supported
• Optional automatic whitening and dewhitening of data
• Programmable
indicator
Carrier
Sense
(CS)
• Based on the industry leading CC1101
radio core
• Programmable
Preamble
Quality
Indicator (PQI) for detecting preambles
and improved protection against sync
word detection in random noise
• Few external components: On-chip
frequency synthesizer, no external filters
or RF switch needed
• Support for automatic Clear Channel
Assessment (CCA) before transmitting
(for listen-before-talk systems)
• Flexible support for packet oriented
systems: On-chip support for sync word
detection, address check, flexible
packet length, and automatic CRC
handling
• Support for per-package Link Quality
Indication (LQI)
Sub-1 GHz Radio with Baseband
Modem
SWRS033F
Page 7 of 242
CC1110Fx / CC1111Fx
4
Absolute Maximum Ratings
Under no circumstances must the absolute maximum ratings given in Table 2 be violated. Stress
exceeding one or more of the limiting values may cause permanent damage to the device.
Parameter
Min
Max
Units
Supply voltage (VDD)
−0.3
3.9
V
Voltage on any digital pin
−0.3
VDD + 0.3,
max 3.9
V
Voltage on the pins RF_P, RF_N
and DCOUPL
−0.3
2.0
V
Voltage ramp-up rate
120
kV/µs
Input RF level
10
dBm
150
°C
Device not programmed
Solder reflow temperature
260
°C
According to IPC/JEDEC J-STD-020D
ESD CC1110Fx
1000
V
According to JEDEC STD 22, method A114, Human
Body Model (HBM)
ESD CC1110Fx
750
V
According to JEDEC STD 22, C101C, Charged Device
Model (CDM)
ESD CC1111x
750
V
According to JEDEC STD 22, method A114, Human
Body Model (HBM)
ESD CC1111x
750
V
According to JEDEC STD 22, C101C, Charged Device
Model (CDM)
Storage temperature range
−50
Condition
All supply pins must have the same voltage
Table 2: Absolute Maximum Ratings
Caution!
ESD
sensitive
device.
Precaution should be used when handling
the device in order to prevent permanent
damage.
5
Operating Conditions
5.1
CC1110Fx Operating Conditions
The operating conditions for CC1110Fx are listed in Table 3 below.
Parameter
Min
Max
Unit
Operating ambient temperature, TA
−40
85
°C
Operating supply voltage (VDD)
2.0
3.6
V
Condition
All supply pins must have the same voltage
Table 3: Operating Conditions for CC1110Fx
5.2
CC1111Fx Operating Conditions
The operating conditions for CC1111Fx are listed in Table 4 below.
Parameter
Operating ambient temperature, TA
Operating supply voltage (VDD)
Min
Max
Unit
0
85
°C
3.0
3.6
V
Condition
All supply pins must have the same voltage
Table 4: Operating Conditions for CC1111Fx
SWRS033F
Page 8 of 242
CC1110Fx / CC1111Fx
6
General Characteristics
TA = 25°C, VDD = 3.0 V if nothing else stated
Parameter
Min
Typ
Max
Unit
Condition/Note
300
348
MHz
391
464
MHz
782
928
MHz
1.2
500
kBaud
2-FSK (500 kBaud only characterized @ 915
MHz on CC1110Fx)
1.2
250
kBaud
GFSK, OOK, and ASK
26
500
kBaud
(Shaped) MSK (also known as differential
offset QPSK) 500 kBaud only characterized
@ 915 MHz
Radio part
Frequency range
Data rate
Optional Manchester encoding (the data rate
in kbps will be half the baud rate)
Wake-Up Timing
PM1 Æ Active Mode
4
µs
Digital regulator on. HS RCOSC and high
speed crystal oscillator off. 32.768 kHz
XOSC or low power RCOSC running.
SLEEP.OSC_PD=1 and CLKCON.OSC=1
PM2Æ Active Mode
100
µs
Digital regulator off. HS RCOSC and high
speed crystal oscillator off. 32.768 kHz
XOSC or low power RCOSC running
SLEEP.OSC_PD=1 and CLKCON.OSC=1
PM3Æ Active Mode
100
µs
Digital regulator off. No crystal oscillators or
RC oscillators are running.
SLEEP.OSC_PD=1 and CLKCON.OSC=1
Table 5: General Characteristics
SWRS033F
Page 9 of 242
CC1110Fx / CC1111Fx
7
Electrical Specifications
7.1
Current Consumption
TA = 25°C, VDD = 3.0 V if nothing else stated. All measurement results are obtained using the
CC1110EM reference design ([1]).
Parameter
Active mode, full
speed (high speed
1
crystal oscillator) .
Min
Typ
Max
Unit
Condition
5.0
mA
System clock running at 26 MHz.
4.8
mA
System clock running at 24 MHz.
Digital regulator on. High speed crystal oscillator and low power
RCOSC running. No peripherals running.
Low CPU activity.
Low CPU activity: No flash access (i.e. only cache hit), no RAM
access
Active mode, full
speed (HS
1
RCOSC) .
2.5
mA
System clock running at 13 MHz.
Digital regulator on. HS RCOSC and low power RCOSC running. No
peripherals running.
Low CPU activity.
Low CPU activity: No flash access (i.e. only cache hit), no RAM
access
Active mode with
radio in RX,
315 MHz
Digital regulator on. High speed crystal oscillator and low power
RCOSC running. Radio in RX mode (sensitivity optimized
MDMCFG2.DEM_DCFILT_OFF=0)
19
mA
1.2 kBaud, input at sensitivity limit, system clock running at 26 MHz.
19.5
mA
1.2 kBaud, input at sensitivity limit, system clock running at 24 MHz
16.2
mA
1.2 kBaud, input at sensitivity limit, system clock running at 203 kHz.
19
mA
1.2 kBaud, input well above sensitivity limit, system clock running at
26 MHz
19.4
mA
1.2 kBaud, input well above sensitivity limit, system clock running at
24 MHz
19
mA
38.4 kBaud, input at sensitivity limit, system clock running at 26 MHz.
16.2
mA
38.4 kBaud, input at sensitivity limit, system clock running at 203 kHz.
19
mA
38.4 kBaud, input well above sensitivity limit, system clock running at
26 MHz.
20
mA
250 kBaud, input at sensitivity limit, system clock running at 26 MHz
21
mA
250 kBaud, input at sensitivity limit, system clock running at 24 MHz.
17.2
mA
250 kBaud, input at sensitivity limit, system clock running at 1.625
MHz.
20
mA
20
mA
250 kBaud, input well above sensitivity limit, system clock running at
26 MHz.
250 kBaud, input well above sensitivity limit, system clock running at
24 MHz.
1
Note: In order to reduce the current consumption in active mode, the clock speed can be reduced by
setting CLKCON.CLKSPD≠000 (see section 13.1 for details).Figure 1 shows typical current
consumption in active mode for different clock speeds
SWRS033F
Page 10 of 242
CC1110Fx / CC1111Fx
Parameter
Min
Typ
Max
Unit
Condition
Digital regulator on. High speed crystal oscillator and low power
RCOSC running. Radio in RX mode (sensitivity optimized
MDMCFG2.DEM_DCFILT_OFF=0)
Active mode with
radio in RX,
433 MHz
19.8
mA
1.2 kBaud, input at sensitivity limit, system clock running at 26 MHz.
19.7
mA
1.2 kBaud, input at sensitivity limit, system clock running at 24 MHz.
17.1
mA
1.2 kBaud, input at sensitivity limit, system clock running at 203 kHz.
19.8
mA
1.2 kBaud, input well above sensitivity limit, system clock running at
26 MHz.
19.7
mA
1.2 kBaud, input well above sensitivity limit, system clock running at
24 MHz.
19.8
mA
38.4 kBaud, input at sensitivity limit, system clock running at 26 MHz.
17.1
mA
38.4 kBaud, input at sensitivity limit, system clock running at 203 kHz
19.8
mA
38.4 kBaud, input well above sensitivity limit, system clock running at
26 MHz.
20.5
mA
250 kBaud, input at sensitivity limit, system clock running at 26 MHz.
21.5
mA
250 kBaud, input at sensitivity limit, system clock running at 24 MHz.
18.1
mA
250 kBaud, input at sensitivity limit, system clock running at 1.625
MHz.
20.5
mA
250 kBaud, input well above sensitivity limit, system clock running at
26 MHz.
20.2
mA
250 kBaud, input well above sensitivity limit, system clock running at
24 MHz
See Figure 2 for typical variation over operating conditions
Digital regulator on. High speed crystal oscillator and low power
RCOSC running. Radio in RX mode (sensitivity optimized
MDMCFG2.DEM_DCFILT_OFF=0). 24 MHz system clock not
measured
Active mode with
radio in RX,
868, 915 MHz
19.7
mA
1.2 kBaud, input at sensitivity limit, system clock running at 26 MHz.
17.0
mA
1.2 kBaud, input at sensitivity limit, system clock running at 203 kHz.
18.7
mA
1.2 kBaud, input well above sensitivity limit, system clock running at
26 MHz.
19.7
mA
38.4 kBaud, input at sensitivity limit, system clock running at 26 MHz.
17.0
mA
38.4 kBaud, input at sensitivity limit, system clock running at 203 kHz.
18.7
mA
38.4 kBaud, input well above sensitivity limit, system clock running at
26 MHz.
20.4
mA
250 kBaud, input at sensitivity limit, system clock running at 26 MHz.
18.0
mA
250 kBaud, input at sensitivity limit, system clock running at 1.625
MHz.
19.1
mA
250 kBaud, input well above sensitivity limit, system clock running at
26 MHz.
System clock running at 26 MHz or 24 MHz.
Active mode with
radio in TX,
315 MHz
Digital regulator on. High speed crystal oscillator and low power
RCOSC running. Radio in TX mode
31.5
mA
10 dBm output power (PA_TABLE0=0xC2)
19
mA
0 dBm output power (PA_TABLE0=0x51)
18
mA
−6 dBm output power (PA_TABLE0=0x2A)
SWRS033F
Page 11 of 242
CC1110Fx / CC1111Fx
Parameter
Min
Typ
Max
Unit
Condition
System clock running at 26 MHz or 24 MHz.
Active mode with
radio in TX,
433 MHz
Digital regulator on. High speed crystal oscillator and low power
RCOSC running. Radio in TX mode
33.5
mA
10 dBm output power (PA_TABLE0=0xC0)
20
mA
0 dBm output power (PA_TABLE0=0x60)
19
mA
−6 dBm output power (PA_TABLE0=0x2A)
System clock running at 26 MHz or 24 MHz.
Active mode with
radio in TX,
868, 915 MHz
Digital regulator on. High speed crystal oscillator and low power
RCOSC running. Radio in TX mode
36.2
mA
10 dBm output power (PA_TABLE0=0xC2). See Table 7 for typical
variation over operating conditions
21
mA
0 dBm output power (PA_TABLE0=0x50)
20
mA
−6 dBm output power (PA_TABLE0=0x2B)
Power mode 0
4.3
mA
Power mode 1
220
µA
Digital regulator on. HS RCOSC and high speed crystal oscillator off.
32.768 kHz XOSC or low power RCOSC running (see 13.1.2.3 for
details)
Power mode 2
0.5
µA
Digital regulator off. HS RCOSC and high speed crystal oscillator off.
Low power RCOSC running (see 13.1.2.4 for details)
Power mode 3
0.3
µA
Digital regulator off. No crystal oscillators or RC oscillators are
running (see 13.1.2.5 for details)
1.0
Same as active mode, but the CPU is not running (see 13.1.2.2 for
details). System clock at 26 MHz or 24 MHz
Add to the figures above if the peripheral unit is activated
Peripheral
Current
Consumption
Timer 1
2.7
µA/MHz
When running
Timer 2
1.3
µA/MHz
When running
Timer 3
1.6
µA/MHz
When running
Timer 4
2
µA/MHz
When running
1.2
mA
ADC
During conversion
Table 6: Current Consumption
SWRS033F
Page 12 of 242
CC1110Fx / CC1111Fx
Current Consumption Active Mode. No Peripherals Running.
fxosc = 26 MHz
6,0
5,0
Current [mA]
4,0
HS XOSC
3,0
HS RCOSC
2,0
1,0
0,0
0 2 4 6
8 10 12 14 16 18 20 22 24 26 28
Clock Speed [MHz]
Measurements done for all valid CLKCON.CLKSPD settings
(000 - 111 for HS XOSC, 001 - 111 for HS RCOSC)
Figure 1: Current Consumption (Active Mode) vs. Clock Speed
Typical Variation in RX Current Consumption over Temperature
and Input Power Level
Data Rate = 250 kBaud, Frequency Band = 433 MHz
Current [mA]
25
23
Avg −40°C
Avg 25°C
Avg 85°C
21
19
-110
-100
-90
-80
-70
-60
-50
-40
-30
-10
-20
Iput Power Level [dBm]
Figure 2: Typical Variation in RX Current Consumption over Temperature and Input Power Level.
Data Rate = 250 kBaud, Frequency Band = 433 MHz
Supply Voltage, VDD = 2 V
Supply Voltage, VDD = 3 V
Supply Voltage, VDD = 3.6 V
Temperature [°C]
−40
25
85
−40
25
85
−40
25
85
Current [mA]
37
36
35.4
37.2
36.2
35.6
37.5
36.4
35.8
Table 7: Typical Variation in TX Current Consumption over Temperature and Supply Voltage,
@ 868 MHz and 10 dBm Output Power.
SWRS033F
Page 13 of 242
CC1110Fx / CC1111Fx
7.2
RF Receive Section
TA = 25°C, VDD = 3.0 V if nothing else stated. All measurement results are obtained using the
CC1110EM reference design ([1]) if nothing else is stated.
Parameter
Digital channel
filter bandwidth
Min
Typ
58
Max
Unit
Condition/Note
812
kHz
User programmable (see Section 14.6). The bandwidth limits are
proportional to crystal frequency (given values assume a 26 MHz system
clock).
315 MHz, 1.2 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0
(GSK, 1% packet error rate, 20 bytes packet length, 5.2 kHz deviation, 58 kHz digital channel filter bandwidth)
Receiver
sensitivity
−110
dBm
System clock running at 26 MHz
−112
dBm
System clock running at 24 MHz
The RX current consumption can be reduced by approximately 2.0 mA
by setting MDMCFG2.DEM_DCFILT_OFF=1. The typical sensitivity is then
−107 dBm.
315 MHz, 38.4 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0
(GSK, 1% packet error rate, 20 bytes packet length, 20 kHz deviation, 100 kHz digital channel filter bandwidth)
Receiver
sensitivity
−102
dBm
System clock running at 26 MHz
−103
dBm
System clock running at 24 MHz
The RX current consumption can be reduced by approximately 2.1 mA
by setting MDMCFG2.DEM_DCFILT_OFF=1. The typical sensitivity is then
−99 dBm.
315 MHz, 250 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0 (MDMCFG2.DEM_DCFILT_OFF=1
cannot be used for data rates > 100 kBaud)
(GSK, 1% packet error rate, 20 bytes packet length, 127 kHz deviation, 540 kHz digital channel filter bandwidth)
Receiver
sensitivity
−94
dBm
System clock running at 26 MHz
−94
dBm
System clock running at 24 MHz
433 MHz, 1.2 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0
(GSK, 1% packet error rate, 20 bytes packet length, 5.2 kHz deviation, 58 kHz digital channel filter bandwidth)
Receiver
sensitivity
−110
dBm
System clock running at 26 MHz
−110
dBm
System clock running at 24 MHz
The RX current consumption can be reduced by approximately 2.6 mA
by setting MDMCFG2.DEM_DCFILT_OFF=1. The typical sensitivity is then
−107 dBm.
433 MHz, 38.4 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0
(GSK, 1% packet error rate, 20 bytes packet length, 20 kHz deviation, 100 kHz digital channel filter bandwidth)
Receiver
sensitivity
Parameter
−102
dBm
System clock running at 26 MHz
−101
dBm
System clock running at 24 MHz
The RX current consumption can be reduced by approximately 2.7 mA
by setting MDMCFG2.DEM_DCFILT_OFF=1. The typical sensitivity is then
−99 dBm.
Min
Typ
Max
Unit
Condition/Note
433 MHz, 250 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0 (MDMCFG2.DEM_DCFILT_OFF=1
cannot be used for data rates > 100 kBaud)
(GSK, 1% packet error rate, 20 bytes packet length, 127 kHz deviation, 540 kHz digital channel filter bandwidth)
Receiver
sensitivity
−95
System clock running at 26 MHz
−93
System clock running at 24 MHz
See Table 9 for typical variation over operating conditions
SWRS033F
Page 14 of 242
CC1110Fx / CC1111Fx
Parameter
Min
Typ
Max
Unit
Condition/Note
868 MHz, 1.2 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0
(GSK, 1% packet error rate, 20 bytes packet length, 5.2 kHz deviation, 58 kHz digital channel filter bandwidth)
Receiver
sensitivity
−110
dBm
System clock running at 26 MHz
−110
dBm
Tested conducted on [4] CC1111 USB-Dongle Reference Design, 24
MHz clock
The RX current consumption can be reduced by approximately 2.0 mA
by setting MDMCFG2.DEM_DCFILT_OFF=1. The typical sensitivity is then
−107 dBm.
Saturation
−14
dBm
MCSM0.CLOSE_IN_RX=00
Adjacent
channel
rejection
38
dB
Desired channel 3 dB above the sensitivity limit. 100 kHz channel
spacing
Alternate
channel
rejection
35
dB
Desired channel 3 dB above the sensitivity limit. 100 kHz channel
spacing
See Figure 58 for plot of selectivity versus frequency offset
Image channel
rejection,
868 MHz
33
dB
IF frequency 152 kHz
Desired channel 3 dB above the sensitivity limit.
868 MHz, 38.4 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0
(GSK, 1% packet error rate, 20 bytes packet length, 20 kHz deviation, 100 kHz digital channel filter bandwidth)
Receiver
sensitivity
−102
dBm
System clock running at 26 MHz
−101
dBm
Tested conducted on [4] CC1111 USB-Dongle Reference Design, 24
MHz clock
The RX current consumption can be reduced by approximately 2.2 mA
by setting MDMCFG2.DEM_DCFILT_OFF=1. The typical sensitivity is then
−100 dBm.
Saturation
−14
dBm
Adjacent
channel
rejection
19
dB
Desired channel 3 dB above the sensitivity limit. 200 kHz channel
spacing
Alternate
channel
rejection
32
dB
Desired channel 3 dB above the sensitivity limit. 200 kHz channel
spacing
MCSM0.CLOSE_IN_RX=00
See Figure 59 for plot of selectivity versus frequency offset
Image channel
rejection,
868 MHz
28
dB
IF frequency 152 kHz
Desired channel 3 dB above the sensitivity limit.
SWRS033F
Page 15 of 242
CC1110Fx / CC1111Fx
Parameter
Min
Typ
Max
Unit
Condition/Note
868 MHz, 250 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0 (MDMCFG2.DEM_DCFILT_OFF=1
cannot be used for data rates > 100 kBaud)
(GSK, 1% packet error rate, 20 bytes packet length, 127 kHz deviation, 540 kHz digital channel filter bandwidth)
Receiver
sensitivity
−94
dBm
System clock running at 26 MHz
−91
dBm
Tested conducted on [4] CC1111 USB-Dongle Reference Design, 24
MHz clock
Saturation
−16
dBm
MCSM0.CLOSE_IN_RX=00
Adjacent
channel
rejection
27
dB
Desired channel 3 dB above the sensitivity limit. 750 kHz channel
spacing
Alternate
channel
rejection
36
dB
Desired channel 3 dB above the sensitivity limit. 750 kHz channel
spacing
See Figure 60 for plot of selectivity versus frequency offset
Image channel
rejection,
868 MHz
17
dB
IF frequency 304 kHz
Desired channel 3 dB above the sensitivity limit.
915 MHz, 1.2 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0
(2-FSK, 5.2 kHz deviation, 1% packet error rate, 20 bytes packet length, 58 kHz digital channel filter bandwidth)
Receiver
sensitivity
−108
dBm
System clock running at 26 MHz
−110
dBm
Tested conducted on [4] CC1111 USB-Dongle Reference Design, 24
MHz clock
The RX current consumption can be reduced by approximately 2.0 mA
by setting MDMCFG2.DEM_DCFILT_OFF=1. The typical sensitivity is then
−107 dBm.
915 MHz, 38.4 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0
(2-FSK, 1% packet error rate, 20 bytes packet length, 100 kHz digital channel filter bandwidth)
Receiver
sensitivity
−100
dBm
System clock running at 26 MHz
−100
dBm
Tested conducted on [4] CC1111 USB-Dongle Reference Design, 24
MHz clock
The RX current consumption can be reduced by approximately 2.1 mA
by setting MDMCFG2.DEM_DCFILT_OFF=1. The typical sensitivity is then
−99 dBm.
915 MHz, 250 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0 (MDMCFG2.DEM_DCFILT_OFF=1
cannot be used for data rates > 100 kBaud)
(MSK, 1% packet error rate, 20 bytes packet length, 540 kHz digital channel filter bandwidth)
Receiver
sensitivity
–93
dBm
System clock running at 26 MHz
–91
dBm
Tested conducted on [4] CC1111 USB-Dongle Reference Design, 24
MHz clock
915 MHz, 500 kBaud data rate, sensitivity optimized, MDMCFG2.DEM_DCFILT_OFF=0 (MDMCFG2.DEM_DCFILT_OFF=1
cannot be used for data rates > 100 kBaud)
(MSK, 1% packet error rate, 20 bytes packet length, 812 kHz digital channel filter bandwidth)
Receiver
sensitivity
–86
dBm
System clock running at 26 MHz.
Not tested on [4] CC1111 USB-Dongle Reference Design, 24 MHz clock
SWRS033F
Page 16 of 242
CC1110Fx / CC1111Fx
Parameter
Min
Typ
Max
Unit
Condition/Note
Blocking
Blocking at ±2
MHz offset, 1.2
kBaud, 868
MHz
−45
dBm
Desired channel 3 dB above the sensitivity limit.
Blocking at ±2
MHz offset, 250
kBaud, 868
MHz
−50
dBm
Desired channel 3 dB above the sensitivity limit
Blocking at ±10
MHz offset, 1.2
kBaud, 868
MHz
−33
dBm
Desired channel 3 dB above the sensitivity limit.
Blocking at ±10
MHz offset, 250
kBaud, 868
MHz
−40
dBm
Desired channel 3 dB above the sensitivity limit.
General
Conducted measurement in a 50 Ω single ended load. Complies with EN
300 328, EN 300 440 class 2, FCC CFR47, Part 15 and ARIB STD-T-66.
Numbers are from CC1101 (same radio on CC1110 and CC1111)
Typical radiated spurious emission is −49 dB measured at the VCO
frequency.
Spurious
emissions
25 MHz GHz
1
Above 1 GHz
−68
−57
dBm
Maximum figure is the ETSI EN 300 220 limit
−66
−47
dBm
Maximum figure is the ETSI EN 300 220 limit
Table 8: RF Receive Section
Supply Voltage, VDD = 2 V
Supply Voltage, VDD = 3 V
Supply Voltage, VDD = 3.6 V
Temperature [°C]
−40
25
85
−40
25
85
−40
25
85
Sensitivity [dBm]
−96.4
−94.9
−92.6
−96.1
−95.0
−92.2
−96.1
−94.5
−92.2
Table 9: Typical Variation in Sensitivity over Temperature and Supply Voltage @ 433 MHz and 250
kBaud Data Rate
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Page 17 of 242
CC1110Fx / CC1111Fx
7.3
RF Transmit Section
TA = 25°C, VDD = 3.0 V if nothing else stated. All measurement results are obtained using the
CC1110EM reference designs ([1]) if nothing else is stated.
Parameter
Min
Typ
Max
Unit
Differential load
impedance
315 MHz
122 + j31
433 MHz
116 + j41
868/915 MHz
86.5 + j43
Output power,
highest setting
10
Ω
dBm
Condition/Note
Differential impedance as seen from the RF-port (RF_P and
RF_N) towards the antenna. Follow the CC1110EM
reference designs ([1], [2] and [3]) available from the TI
website.
Output power is programmable, and full range is available in
all frequency bands
Output power may be restricted by regulatory limits. See
AN050 [13]. Note that this application note is for CC1101 but
the same limitations apply to CC1110Fx and CC1111Fx as well.
For CC1111Fx see in addition DN016 [14] for information on
antenna solution and additional regulatory restrictions
See Figure 3 for typical variation over operating conditions
Delivered to 50 Ω single-ended load via CC1110EM
reference design [3] RF matching network.
Output power,
lowest setting
−30
dBm
Output power is programmable and is available across the
entire frequency band
Delivered to 50 Ω single-ended load via CC1110EM
reference design [3] RF matching network.
Harmonics, radiated
nd
2 Harm, 433 MHz
rd
3 Harm, 433 MHz
nd
2 Harm, 868 MHz
rd
3 Harm, 868 MHz
−51
−42
dBm
dBm
−37
−43
dBm
dBm
Harmonics, radiated
nd
2 Harm, 868 MHz
rd
3 Harm, 868 MHz
−55
dBm
−55
dBm
Harmonics,
conducted
Measured on CC1110EM reference designs ([2] and [3]) with
CW, 10 dBm output power
The antennas used during the radiated measurements
(SMAFF-433 from R.W.Badland and Nearson
S331 868/915) play a part in attenuating the harmonics
Measured on [4] CC1111 USB-Dongle Reference Design,
with CW, 10 dBm output power. The chip antenna used
during the radiated measurements play a part in attenuating
the harmonics
Measured on CC1110EM reference designs ([1], [2] and [3])
with CW, 10 dBm output power, TX frequency at 315.00
MHz, 433.00 MHz, 868.00 MHz, or 915.00 MHz
315 MHz
< −35
< −52
dBm
Frequencies below 960 MHz
Frequencies above 960 MHz
433 MHz
< −44
< −35
dBm
Frequencies below 1 GHz
Frequencies above 1 GHz
868 MHz
< −35
dBm
Frequencies above 1 GHz
915 MHz
< −34
dBm
Frequencies above 1 GHz
SWRS033F
Page 18 of 242
CC1110Fx / CC1111Fx
Parameter
Min
Typ
Max
Unit
Spurious emissions
radiated,
Harmonics not
included
Condition/Note
Measured on CC1110EM reference designs ([1], [2] and [3])
with 10 dBm CW, TX frequency at 315.00 MHz, 433.00 MHz,
868.00 or 915.00 MH. For CC1111Fx see DN016 [14]
Please refer to register TEST1 on Page 224 for required
settings in RX and TXTEST1TEST1
315 MHz
< −58
< −53
dBm
Frequencies below 960 MHz
Frequencies above 960 MHz
433 MHz
< −50
< −54
< −56
dBm
Frequencies below 1 GHz
Frequencies above 1 GHz
Frequencies within 47 - 74, 87.5 - 118, 174 - 230, 470 - 862
MHz
868 MHz
< −56
< −54
< −56
915 MHz
dBm
< −51
< −60
dBm
Frequencies below 1 GHz
Frequencies above 1 GHz
Frequencies within 47 - 74, 87.5 - 118, 174 - 230, 470 - 862
MHz.
Frequencies below 960 MHz
Frequencies above 960 MHz
Table 10: RF Transmit Section
Typical Variation in Output Power (10dBm) over Frequency and
Temperature
Output Power [dBm]
12
11
10
Avg −40°C
9
Avg 25°C
8
Avg 85°C
7
6
750
800
850
900
950
Frequency [MHz]
Figure 3: Typical Variation in Output Power over Frequency and Temperature
(10 dBm output power)
SWRS033F
Page 19 of 242
CC1110Fx / CC1111Fx
7.4
7.4.1
Crystal Oscillators
CC1110Fx Crystal Oscillator
TA = 25°C, VDD = 3.0 V if nothing else is stated.
Parameter
Crystal frequency
Min
Typ
Max
Unit
Condition/Note
26
26
27
MHz
Referred to as fXOSC.
ppm
This is the total tolerance including a) initial tolerance, b) crystal
loading, c) aging, and d) temperature dependence.
Crystal frequency
accuracy
requirement
±40
The acceptable crystal tolerance depends on RF frequency and
channel spacing / bandwidth.
C0
1
5
7
pF
Simulated over operating conditions
Load capacitance
10
13
20
pF
Simulated over operating conditions
100
Ω
Simulated over operating conditions
µs
fXOSC = 26 MHz
ESR
Start-up time
250
Note: A Ripple counter of 12 bit is included to ensure duty-cycle
requirements. Start-up time includes ripple counter delay until
SLEEP.XOSC_STB is asserted
Power Down
Guard Time
3
ms
The crystal oscillator must be in power down for a guard time before it
is used again. This requirement is valid for all modes of operation. The
need for power down guard time can vary with crystal type and load.
Minimum figure is valid for reference crystal NDK, AT-41CD2 and load
capacitance according to Table 29.
If power down guard time is violated increased CRC error can be
present in the first few radio packets after power down.
Table 11: CC1110Fx Crystal Oscillator Parameters
7.4.2
CC1111Fx Crystal Oscillator
TA = 25°C, VDD = 3.0 V if nothing else is stated.
Parameter
Min
Crystal frequency
Typ
Max
48
Unit
Condition/Note
MHz
Referred to as fXOSC.
48 MHz crystal gives a system clock of 24 MHz.
Please note that there is restricted usage in the frequency bands 863 870 MHz (due to spurious emission). See DN016 Compact Antenna
Solutions for 868/915 MHz [14]
Crystal frequency
accuracy
requirement
±40
ppm
This is the total tolerance including a) initial tolerance, b) crystal
loading, c) aging, and d) temperature dependence.
The acceptable crystal tolerance depends on RF frequency and
channel spacing / bandwidth.
C0
Fundamental
Load capacitance
0.85
1
1.15
pF
Simulated over operating conditions. Variation given by reference
crystal NX2520SA from NDK (fundamental).
15
16
17
pF
Simulated over operating conditions
60
Ω
Simulated over operating conditions
ESR
Start-up time
Fundamental
Note: A Ripple counter of 14 bit is included to ensure duty-cycle
requirements. Start-up time includes ripple counter delay until
SLEEP.XOSC_STB is asserted
650
µs
Table 12: CC1111Fx Crystal Oscillator Parameters
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Page 20 of 242
CC1110Fx / CC1111Fx
7.5
32.768 kHz Crystal Oscillator
TA = 25°C, VDD = 3.0V if nothing else is stated.
Parameter
Min
Crystal frequency
Typ
Max
Unit
32.768
Condition/Note
kHz
C0
0.9
2.0
pF
Simulated over operating conditions
Load capacitance
12
16
pF
Simulated over operating conditions
ESR
40
130
kΩ
Simulated over operating conditions
Start-up time
400
ms
Value is simulated
Table 13: 32.768 kHz Crystal Oscillator Parameters
7.6
Low Power RC Oscillator
TA = 25°C, VDD = 3.0 V if nothing else is stated.
Parameter
2
Calibrated frequency
Min
Typ
Max
Unit
Condition/Note
32.0
34.7
36.0
kHz
Calibrated low power RC oscillator frequency is
fXOSC / 750
±1
%
Frequency accuracy after
calibration
Temperature coefficient
+0.5
%/°C
Frequency drift when temperature changes after
calibration
Supply voltage coefficient
+3
%/V
Frequency drift when supply voltage changes after
calibration
Initial calibration time
2
ms
When the low power RC oscillator is enabled,
calibration is continuously done in the background
as long as the high speed crystal oscillator is
running.
Table 14: Low Power RC Oscillator Parameters
2
Min figures are given using fXOSC = 24 MHz. Typical figures are given using fXOSC = 26 MHz, and Max
figures are given using fXOSC = 27 MHz
SWRS033F
Page 21 of 242
CC1110Fx / CC1111Fx
7.7
High Speed RC Oscillator
TA = 25°C, VDD = 3.0 V if nothing else is stated.
Parameter
2
Calibrated frequency
Min
Typ
Max
Unit
Condition/Note
12
13
13.5
MHz
Calibrated HS RCOSC frequency is fXOSC / 2
±15
Uncalibrated frequency
accuracy
%
Calibrated frequency
accuracy
±1
%
Start-up time
10
µs
−325
ppm/°C
Frequency drift when temperature changes after
calibration
28
ppm/V
Frequency drift when supply voltage changes after
calibration
µs
The HS RCOSC will be calibrated once when the
high speed crystal oscillator is selected as system
clock source (CLKCON.OSC is set to 0), and also
when the system wakes up from PM{1 - 3}. See
13.1.5.1 for details).
Temperature coefficient
Supply voltage coefficient
Initial calibration time
65
Table 15: High Speed RC Oscillator Parameters
7.8
Frequency Synthesizer Characteristics
TA = 25°C, VDD = 3.0 V if nothing else stated. All measurement results are obtained using the
CC1110EM reference designs ([1]).
Parameter
Min
Typ
Max
Unit
Programmed frequency
resolution
367
397
412
Hz
Condition/Note
24 - 27 MHz system clock.
16
Frequency resolution = fXOSC / 2
Synthesizer frequency
tolerance
±40
ppm
RF carrier phase noise
−92
dBc/Hz
@ 50 kHz offset from carrier
RF carrier phase noise
−93
dBc/Hz
@ 100 kHz offset from carrier
RF carrier phase noise
−93
dBc/Hz
@ 200 kHz offset from carrier
RF carrier phase noise
−98
dBc/Hz
@ 500 kHz offset from carrier
RF carrier phase noise
−107
dBc/Hz
@ 1 MHz offset from carrier
RF carrier phase noise
−113
dBc/Hz
@ 2 MHz offset from carrier
RF carrier phase noise
−119
dBc/Hz
@ 5 MHz offset from carrier
dBc/Hz
@ 10 MHz offset from carrier
RF carrier phase noise
PLL turn-on / hop time
−129
3
Given by crystal used. Required accuracy (including
temperature and aging) depends on frequency band and
channel bandwidth / spacing.
85.1
88.4
95.8
µs
Time from leaving the IDLE state until arriving in the RX,
FSTXON, or TX state, when not performing calibration.
Crystal oscillator running.
PLL RX/TX settling time
3
9.3
9.6
10.4
µs
Settling time for the 1·IF frequency step from RX to TX
PLL TX/RX settling time
3
20.7
21.5
23.3
µs
Settling time for the 1·IF frequency step from TX to RX
694
721
780.
8
µs
Calibration can be initiated manually or automatically
before entering or after leaving RX/TX.
PLL calibration time
3
Table 16: Frequency Synthesizer Parameters
3
Min figures are given using fXOSC = 27 MHz. Typ figures are given using fXOSC = 26 MHz, and Max
figures are given using fXOSC = 24 MHz.
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CC1110Fx / CC1111Fx
7.9
Analog Temperature Sensor
TA= 25°C, VDD = 3.0V if nothing else stated. All measurement results are obtained using the
CC1110EM reference designs ([1]).
Parameter
Min
Typ
Max
Unit
Output voltage at −0°C
0.660
V
Output voltage at 0°C
0.755
V
Output voltage at 40°C
0.859
V
Output voltage at 80°C
0.958
V
Temperature coefficient
Error in calculated
temperature, calibrated
2.47
−2
*
0
mV/°C
2
*
°C
Condition/Note
Fitted from −20°C to 80°C
From –20°C to 80°C when using 2.47 mV/°C, after 1-point
calibration at room temperature
*
The indicated minimum and maximum error with 1-point
calibration is based on measured values for typical process
parameters
Current consumption
increase when enabled
0.3
mA
Table 17: Analog Temperature Sensor Parameters
7.10 7 - 12 bit ADC
TA = 25°C, VDD = 3.0 V if nothing else stated. The numbers given here are based on tests performed
in accordance with IEEE Std 1241-2000 [8]. The ADC data are from CC2430 characterization. As the
CC1110Fx/C1111Fx uses the same ADC, the numbers listed in Table 18 should be good indicators of the
performance to be expected from CC1110Fx and CC1111Fx. Note that these numbers will apply for 24
MHz operated systems (CC1111Fx using a 48 MHz crystal). Performance will be slightly different for
other crystal frequencies (e.g. 26 MHz and 27 MHz).
Parameter
Min
Typ
Max
Unit
Condition/Note
Input voltage
0
VDD
V
VDD is the voltage on the AVDD pin (2.0 - 3.6 V)
External reference voltage
0
VDD
V
VDD is the voltage on the AVDD pin (2.0 - 3.6 V)
External reference voltage
differential
0
VDD
V
VDD is the voltage on the AVDD pin (2.0 - 3.6 V)
197
kΩ
Simulated using 4 MHz clock speed (see Section
13.10.2.7)
2.97
V
5.7
bits
Input resistance, signal
4
Full-Scale Signal
ENOB
4
Single ended input
ENOB
4
Differential input
Useful Power Bandwidth
Peak-to-peak, defines 0 dBFS
7-bits setting
7.5
9-bits setting
9.3
10-bits setting
10.8
12-bits setting
6.5
bits
7-bits setting
8.3
9-bits setting
10.0
10-bits setting
11.5
12-bits setting
0 - 20
kHz
7-bits setting, both single and differential
-Single ended input
−75.2
dB
12-bits setting, −6 dBFS
-Differential input
−86.6
dB
12-bits setting, −6 dBFS
4
THD
4
Measured with 300 Hz Sine input and VDD as reference.
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CC1110Fx / CC1111Fx
Parameter
Signal To Non-Harmonic Ratio
Min
Typ
Max
Unit
Condition/Note
4
-Single ended input
70.2
dB
12-bits setting
79.3
dB
12-bits setting
-Single ended input
78.8
dB
12-bits setting, -6 dBFS
-Differential input
88.9
dB
12-bits setting, -6 dBFS
CMRR, differential input
<−84
dB
12- bit setting, 1 kHz Sine (0 dBFS), limited by ADC
resolution
Crosstalk, single ended input
<−84
dB
12- bit setting, 1 kHz Sine (0 dBFS), limited by ADC
resolution
−3
mV
Mid. Scale
Gain error
0.68
%
4
0.05
LSB
12-bits setting, mean
0.9
LSB
12-bits setting, max
-Differential input
Spurious Free Dynamic Range
Offset
DNL
INL
4
4
4.6
LSB
12-bits setting, mean
13.3
LSB
12-bits setting, max
SINAD
35.4
dB
7-bits setting
Single ended input
46.8
dB
9-bits setting
(−THD+N)
57.5
dB
10-bits setting
66.6
dB
12-bits setting
SINAD
40.7
dB
7-bits setting
Differential input
51.6
dB
9-bits setting
(−THD+N)
61.8
dB
10-bits setting
70.8
dB
12-bits setting
20
µs
7-bits setting
36
µs
9-bits setting
68
µs
10-bits setting
132
µs
12-bits setting
1.2
mA
4
4
Conversion time
Current consumption
Table 18: 7 - 12 bit ADC Characteristics
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CC1110Fx / CC1111Fx
7.11 Control AC Characteristics
TA = 25°C, VDD = 3.0 V if nothing else stated. All measurement results are obtained using the
CC1110EM reference designs ([1]).
Parameter
Min
Typ
Max
Unit
Condition/Note
CC1110Fx
System clock,
fSYSCLK
tSYSCLK= 1/ fSYSCLK
0.1875
26
27
MHz
High speed crystal oscillator used as source (HS XOSC).
0.1875
13
13.5
MHz
Calibrated HS RCOSC used as source.
HS
XOSC
HS
RCOSC
Min: fXOSC = 24 MHz, CLKCON.CLKSPD =
111
111
Typ: fXOSC = 26 MHz, CLKCON.CLKSPD =
000
001
Max: fXOSC = 27 MHz, CLKCON.CLKSPD =
000
001
HS
XOSC
HS
RCOSC
Min: fXOSC = 48 MHz, CLKCON.CLKSPD =
111
111
Typ: fXOSC = 48 MHz, CLKCON.CLKSPD =
000
001
Max: fXOSC = 48 MHz, CLKCON.CLKSPD =
000
001
CC1111Fx
RESET_N low
width
0.1875
24
24
MHz
High speed crystal oscillator used as source
0.1875
12
12
MHz
HS RCOSC used as source
250
ns
See item 1, Figure 4. This is the shortest pulse that is guaranteed to
be recognized as a reset pin request.
Note: Shorter pulses may be recognized but will not lead to
complete reset of all modules within the chip.
Interrupt pulse
width
tSYSCLK
See item 2, Figure 4. This is the shortest pulse that is guaranteed to
be recognized as an interrupt request. In PM2/3 the internal
synchronizers are bypassed so this requirement does not apply in
PM2/3.
Table 19: Control Inputs AC Characteristics
Figure 4: Control Inputs AC Characteristics
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CC1110Fx / CC1111Fx
7.12 SPI AC Characteristics
TA = 25°C, VDD = 3.0V if nothing else stated. All measurement results are obtained using the
CC1110EM reference designs ([1]).
Parameter
Min
SCK period
SCK duty cycle
Typ
Max
Unit
Condition/Note
See
Section
13.14.3
ns
Master. See item 1, Figure 5
50
%
Master.
SSN low to SCK
2·tSYSCLK
See item 5, Figure 5
SCK to SSN high
30
ns
See item 6, Figure 5
MISO setup
10
ns
Master. See item 2, Figure 5
MISO hold
10
ns
Master. See item 3, Figure 5
SCK to MOSI
SCK period
25
100
SCK duty cycle
50
ns
Master. See item 4, Figure 5, load = 10 pF
ns
Slave. See item 1, Figure 5
%
Slave.
MOSI setup
10
ns
Slave. See item 2, Figure 5
MOSI hold
10
ns
Slave. See item 3, Figure 5
ns
Slave. See item 4, Figure 5, load = 10 pF
SCK to MISO
25
Table 20: SPI AC Characteristics
Figure 5: SPI AC Characteristics
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CC1110Fx / CC1111Fx
7.13 Debug Interface AC Characteristics
TA = 25°C, VDD = 3.0 V if nothing else stated. All measurement results are obtained using the
CC1110EM reference designs ([1]).
Parameter
Min
Debug clock
period
125
Typ
Max
Unit
Condition/Note
ns
See item 1, Figure 6
Note: CLKCON.CLKSPD must be 000 or 001 when using
the debug interface
Debug data setup
5
Debug data hold
5
ns
Clock to data
delay
10
RESET_N inactive
after P2_2 rising
10
See item 2, Figure 6
ns
See item 3, Figure 6
ns
See item 4, Figure 6, load = 10 pF
ns
See item , Figure 6
Table 21: Debug Interface AC Characteristics
1
DEBUG CLK
P2_2
3
2
DEBUG DATA
P2_1
4
DEBUG DATA
P2_1
5
RESET_N
Figure 6: Debug Interface AC Characteristics
7.14 Port Outputs AC Characteristics
TA = 25°C, VDD = 3.0 V if nothing else stated. All measurement results are obtained using the
CC1110EM reference designs ([1]).
Parameter
Min
Typ
P0_[0:7], P1_[2:7],
P2_[0:4] Port output
rise time
(PICTL.PADSC=0 /
PICTL.PADSC=1)
3.15 / 1.34
P0_[0:7], P1_[2:7],
P2_[0:4] Port output fall
time (PICTL.PADSC=0
/ PICTL.PADSC=1)
3.2 / 1.44
Max
Unit
ns
Condition/Note
Load = 10 pF
Timing is with respect to 10% VDD and 90% VDD levels.
Values are estimated
ns
Load = 10 pF
Timing is with respect to 90% VDD and 10% VDD.
Values are estimated
Table 22: Port Outputs AC Characteristics
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CC1110Fx / CC1111Fx
7.15 Timer Inputs AC Characteristics
TA = 25°C, VDD = 3.0 V if nothing else stated. All measurement results are obtained using the
CC1110EM reference designs ([1]).
Parameter
Input capture
pulse width
Min
Typ
Max
Unit
Condition/Note
tSYSCLK
Synchronizers determine the shortest input pulse that can
be recognized. The synchronizers operate from the current
system clock rate (see Table 19)
Table 23: Timer Inputs AC Characteristics
7.16 DC Characteristics
The DC Characteristics of CC1110Fx/CC1111Fx are listed in Table 24 below.
TA = 25°C, VDD = 3.0 V if nothing else stated. All measurement results are obtained using the
CC1110EM reference designs ([1]).
Digital Inputs/Outputs
Min
Typ
Logic "0" input voltage
Logic "1" input voltage
Max
Unit
30
%
Of VDD supply (2.0 - 3.6 V)
%
Of VDD supply (2.0 - 3.6 V)
70
Condition
Logic "0" input current per pin
N/A
12
nA
Input equals 0 V
Logic "1" input current per pin
N/A
12
nA
Input equals VDD
Total logic “0” input current all pins
70
nA
Total logic “1” input current all pins
70
nA
I/O pin pull-up and pull-down resistor
20
kΩ
Table 24: DC Characteristics
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CC1110Fx / CC1111Fx
8
Pin and I/O Port Configuration
GUARD
AVDD_DREG
DCOUPL
RESET_N
P1_7
P1_6
P1_5
P1_4
P1_3
The CC1110Fx pin-out is shown in Figure 7 and Table 25. See Section 13.4 for details on the I/O
configuration.
36 35 34 33 32 31 30 29 28
P1_2 1
27 RBIAS
DVDD 2
26 AVDD
P1_1 3
25 AVDD
P1_0 4
24 RF_N
P0_0 5
P0_1 6
23 RF_P
22 AVDD
P0_2 7
21 XOSC_Q1
P0_3 8
20 XOSC_Q2
P0_4 9
19 AVDD
10 11 12 13 14 15 16 17 18
P2_4/XOSC32_Q2
P2_3/XSOC32_Q1
P2_2
P2_1
P2_0
P0_7
P0_6
P0_5
DVDD
AGND
Exposed die
attached pad
Figure 7: CC1110Fx Pinout Top View
Note: The exposed die attach pad must be connected to a solid ground plane as this is the ground
connection for the chip.
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CC1110Fx / CC1111Fx
Pin
Pin Name
Pin Type
Description
-
AGND
Ground
The exposed die attach pad must be connected to a solid ground
plane
1
P1_2
D I/O
Port 1.2
2
DVDD
Power (Digital)
2.0 V - 3.6 V digital power supply for digital I/O
3
P1_1
D I/O
Port 1.1
4
P1_0
D I/O
Port 1.0
5
P0_0
D I/O
Port 0.0
6
P0_1
D I/O
Port 0.1
7
P0_2
D I/O
Port 0.2
8
P0_3
D I/O
Port 0.3
9
P0_4
D I/O
Port 0.4
10
DVDD
Power (Digital)
2.0 V - 3.6 V digital power supply for digital I/O
11
P0_5
D I/O
Port 0.5
12
P0_6
D I/O
Port 0.6
13
P0_7
D I/O
Port 0.7
14
P2_0
D I/O
Port 2.0
15
P2_1
D I/O
Port 2.1
16
P2_2
D I/O
Port 2.2
17
P2_3/XOSC32_Q1
D I/O
Port 2.3/32.768 kHz crystal oscillator pin 1
18
P2_4/XOSC32_Q2
D I/O
Port 2.4/32.768 kHz crystal oscillator pin 2
19
AVDD
Power (Analog)
2.0 V - 3.6 V analog power supply connection
20
XOSC_Q2
Analog I/O
Crystal oscillator pin 2
21
XOSC_Q1
Analog I/O
Crystal oscillator pin 1, or external clock input
22
AVDD
Power (Analog)
2.0 V - 3.6 V analog power supply connection
23
RF_P
RF I/O
Positive RF input signal to LNA in receive mode
Positive RF output signal from PA in transmit mode
24
RF_N
RF I/O
Negative RF input signal to LNA in receive mode
Negative RF output signal from PA in transmit mode
25
AVDD
Power (Analog)
2.0 V - 3.6 V analog power supply connection
26
AVDD
Power (Analog)
2.0 V - 3.6 V analog power supply connection
27
RBIAS
Analog I/O
External precision bias resistor for reference current
28
GUARD
Power (Digital)
Power supply connection for digital noise isolation
29
AVDD_DREG
Power (Digital)
2.0 V - 3.6 V digital power supply for digital core voltage regulator
30
DCOUPL
Power decoupling
1.8 V digital power supply decoupling
31
RESET_N
DI
Reset, active low
32
P1_7
D I/O
Port 1.7
33
P1_6
D I/O
Port 1.6
34
P1_5
D I/O
Port 1.5
35
P1_4
D I/O
Port 1.4
36
P1_3
D I/O
Port 1.3
Table 25: CC1110Fx Pin-out Overview
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CC1110Fx / CC1111Fx
GUARD
AVDD_DREG
DCOUPL
P1_7
RESET_N
P1_6
P1_5
P1_4
P1_3
The CC1111Fx pin-out is shown in Figure 8 and Table 26. See Section 13.4 for details on the I/O
configuration.
36 35 34 33 32 31 30 29 28
P1_2 1
27 R_BIAS
DVDD 2
26 AVDD
P1_1 3
25 AVDD
P1_0 4
24 RF_N
P0_0 5
P0_1 6
23 RF_P
22 AVDD
P0_2 7
21 XOSC_Q1
P0_3 8
20 XOSC_Q2
P0_4 9
19 AVDD
10 11 12 13 14 15 16 17 18
P2_4/XOSC32_Q2
P2_3/XSOC32_Q1
P2_2
P2_1
P2_0
P0_5
DVDD
DM
DP
AGND
Exposed die
attached pad
Figure 8: CC1111Fx Pin-out Top View
Note: The exposed die attach pad must be connected to a solid ground plane as this is the ground
connection for the chip.
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CC1110Fx / CC1111Fx
Pin
Pin Name
Pin Type
Description
-
AGND
Ground
The exposed die attach pad must be connected to a solid ground
plane
1
P1_2
D I/O
Port 1.2
2
DVDD
Power (Digital)
2.0 V - 3.6 V digital power supply for digital I/O
3
P1_1
D I/O
Port 1.1
4
P1_0
D I/O
Port 1.0
5
P0_0
D I/O
Port 0.0
6
P0_1
D I/O
Port 0.1
7
P0_2
D I/O
Port 0.2
8
P0_3
D I/O
Port 0.3
9
P0_4
D I/O
Port 0.4
10
DP
USB I/O
USB Differential Data Bus Plus
11
DM
USB I/O
USB Differential Data Bus Minus
12
DVDD
Power (Digital)
2.0 V - 3.6 V digital power supply for digital I/O
13
P0_5
D I/O
Port 0.5
14
P2_0
D I/O
Port 2.0
15
P2_1
D I/O
Port 2.1
16
P2_2
D I/O
Port 2.2
17
P2_3/XOSC32_Q1
D I/O
Port 2.3/32.768 kHz crystal oscillator pin 1
18
P2_4/XOSC32_Q2
D I/O
Port 2.4/32.768 kHz crystal oscillator pin 2
19
AVDD
Power (Analog)
2.0 V - 3.6 V analog power supply connection
20
XOSC_Q2
Analog I/O
Crystal oscillator pin 2
21
XOSC_Q1
Analog I/O
Crystal oscillator pin 1, or external clock input
22
AVDD
Power (Analog)
2.0 V - 3.6 V analog power supply connection
23
RF_P
RF I/O
Positive RF input signal to LNA in receive mode
Positive RF output signal from PA in transmit mode
24
RF_N
RF I/O
Negative RF input signal to LNA in receive mode
Negative RF output signal from PA in transmit mode
25
AVDD
Power (Analog)
2.0 V - 3.6 V analog power supply connection
26
AVDD
Power (Analog)
2.0 V - 3.6 V analog power supply connection
27
RBIAS
Analog I/O
External precision bias resistor for reference current
28
GUARD
Power (Digital)
Power supply connection for digital noise isolation
29
AVDD_DREG
Power (Digital)
2.0 V - 3.6 V digital power supply for digital core voltage regulator
30
DCOUPL
Power
decoupling
1.8 V digital power supply decoupling
31
RESET_N
DI
Reset, active low
32
P1_7
D I/O
Port 1.7
33
P1_6
D I/O
Port 1.6
34
P1_5
D I/O
Port 1.5
35
P1_4
D I/O
Port 1.4
36
P1_3
D I/O
Port 1.3
Table 26: CC1111Fx Pin-out Overview
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CC1110Fx / CC1111Fx
9
Circuit Description
Figure 9:C C1110Fx/CC1111Fx Block Diagram
A block diagram of CC1110Fx/CC1111Fx is shown
in Figure 9. The modules can be divided into
one out of three categories: CPU-related
modules, radio-related modules, and modules
related to power, test, and clock distribution. In
the following sub-sections, a short description
of each module that appears in Figure 9.
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CC1110Fx / CC1111Fx
9.1
CPU and Peripherals
access to the radio registers and I2S registers
in the radio register bank even though these
are indeed mapped into XDATA memory
space.
The 8051 CPU core is a single-cycle 8051compatible core. It has three different memory
access
buses
(SFR,
DATA
and
CODE/XDATA), a debug interface, and an
extended interrupt unit servicing 18 interrupt
sources. See Section 1 for details on the CPU.
The 1/2/4 KB SRAM maps to the DATA
memory space and part of the XDATA and
CODE memory spaces. The memory is an
ultra-low-power SRAM that retains its contents
even when the digital part is powered off (PM2
and PM3).
The memory crossbar/arbitrator is at the
heart of the system as it connects the CPU
and DMA controller with the physical
memories and all peripherals through the SFR
bus. The memory arbitrator has four memory
access points, access at which can map to
one of three physical memories on the
CC2510Fx and one of four physical memories
on the CC2511Fx: a 1/2/4 KB SRAM, 8/16/32 KB
flash memory, RF/I2S registers, and USB
registers (CC2511Fx). The memory arbitrator is
responsible for performing arbitration and
sequencing between simultaneous memory
accesses to the same physical memory.
The 8/16/32 KB flash block provides in-circuit
programmable non-volatile program memory
for the device and maps into the CODE and
XDATA memory spaces. Table 27 shows the
available devices in the CC1110/CC1111
family. The available devices differ only in
flash memory size. Writing to the flash block is
performed through a Flash Controller that
allows page-wise (1024 byte) erasure and 2byte-wise reprogramming. See Section 13.3
for details.
The SFR bus is drawn conceptually in the
block diagram as a common bus that connects
all hardware peripherals, except USB, to the
memory arbitrator. The SFR bus also provides
Device
Flash [KB]
CC1110F8
8
CC1111F8
8
CC1110F16
16
CC1111F16
16
CC1110F32
32
CC1111F32
32
Table 27: CC1110Fx/CC1111Fx Flash Memory Options
A versatile five-channel DMA controller is
available in the system. It accesses memory
using a unified memory space and has
therefore access to all physical memories.
Each channel is configured (trigger event,
priority, transfer mode, addressing mode,
source and destination pointers, and transfer
count) with DMA descriptors anywhere in
memory. Many of the hardware peripherals
rely on the DMA controller for efficient
operation (AES core, Flash Controller,
USARTs, Timers, and ADC interface) by
performing data transfers between a single
SFR address and flash/SRAM. See Section
13.5 for details.
The interrupt controller services 18 interrupt
sources, divided into six interrupt groups, each
of which is associated with one out of four
interrupt priorities. An interrupt request is
serviced even if the device is in PM1, PM2, or
PM3 by bringing the CC1110Fx/CC1111Fx back to
active mode.
The debug interface implements a proprietary
two-wire serial interface that is used for incircuit debugging. Through this debug
interface it is possible to perform an erasure of
the entire flash memory, control which
oscillators are enabled, stop and start
execution of the user program, execute
supplied instructions on the 8051 core, set
code breakpoints, and single step through
instructions in the code. Using these
techniques it is possible to perform in-circuit
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CC1110Fx / CC1111Fx
debugging and external flash programming.
See Section 12 for details.
The I/O-controller is responsible for all
general-purpose I/O pins. The CPU can
configure whether peripheral modules control
certain pins or if they are under software
control. In the latter case, each pin can be
configured as an input or output and it is also
possible to configure the input mode to be pullup, pull-down, or tristate. Each peripheral that
connects to the I/O-pins can choose between
two different I/O pin locations to ensure
flexibility in various applications. See Section
13.4 for details.
The Sleep Timer is an ultra low-power timer
which uses a 32.768 kHz crystal oscillator or a
low power RC oscillator as clock source. The
Sleep Timer runs continuously in all operating
modes except active mode and PM3 and is
typically used to get out of PM0, PM1, or PM2.
See Section 13.8 for details.
A
built-in
watchdog
timer
allows
the
CC1110Fx/CC1111Fx to reset itself in case the
firmware hangs. When enabled, the watchdog
timer must be cleared periodically, otherwise it
will reset the device when it times out. See
Section 13.13 for details.
Timer 1 is a 16-bit timer which supports typical
timer/counter functions such as input capture,
output compare, and PWM functions. The
timer has a programmable prescaler, a 16-bit
period value, and three independent
capture/compare channels. Each of the
channels can be used as PWM outputs or to
capture the timing of edges on input signals. A
second order Delta-Sigma noise shaper mode
is also supported for audio applications. See
Section 13.6 for details.
Timer 2 (MAC timer) is specially designed to
support time-slotted protocols in software. The
timer has a configurable timer period and a
programmable prescaler range. See Section
13.7 for details.
Timers 3 and Timer 4 are two 8-bit timers
which supports typical timer/counter functions
such as output compare and PWM functions.
They have a programmable prescaler, an 8-bit
period value, and two compare channels each,
which can be used as PWM outputs. See
Section 13.9 for details.
USART 0 and USART 1 are each
configurable as either an SPI master/slave or
a UART. They provide hardware flow-control
and double buffering on both RX and TX and
are thus well suited for high-throughput, fullduplex applications. Each has its own high-
precision baud-rate generator, hence leaving
the ordinary timers free for other uses. When
configured as an SPI slave they sample the
input signal using SCK directly instead of
using some over-sampling scheme and are
therefore well-suited for high data rates. See
Section 13.14 for details.
The AES encryption/decryption core allows
the user to encrypt and decrypt data using the
AES algorithm with 128-bit keys. See Section
13.12 for details.
The ADC supports 7 to 12 bits of resolution in
a 30 kHz to 4 kHz bandwidth respectively. DC
and audio conversions with up to eight input
channels (P0) are possible (CC1111Fx is limited
to six channels). The inputs can be selected
as single ended or differential. The reference
voltage can be internal, VDD, or a single
ended or differential external signal. The ADC
also has a temperature sensor input channel.
The ADC can automate the process of
periodic sampling or conversion over a
sequence of channels. See Section 13.10 for
details.
The USB allows the CC1111Fx to implement a
Full-Speed USB 2.0 compatible device. The
USB has a dedicated 1 KB SRAM that is used
for the endpoint FIFOs. 5 endpoints are
available in addition to control endpoint 0.
Each of these endpoints must be configured
as Bulk/Interrupt or Isochronous and can be
used as IN, OUT or IN/OUT. Double buffering
of packets is also supported for endpoints 1 5. The maximum FIFO memory available for
each endpoint is as follows: 32 bytes for
endpoint 0, 32 bytes for endpoint 1, 64 bytes
for endpoint 2, 128 bytes for endpoint 3, 256
bytes for endpoint 4, and 512 bytes for
endpoint 5. When an endpoint is used as
IN/OUT, the FIFO memory available for the
endpoint can be distributed between IN and
OUT depending on the demands of the
application. The USB does not exist on the
CC1110Fx. See Section 13.16 for details.
The I2S can be used to send/receive audio
samples to/from an external sound processor
or DAC and may operate at full or half duplex.
Samples of up to 16-bits resolution can be
used although the I2S can be configured to
send more low order bits if necessary to be
compliant with the resolution of the receiver
(up to 32 bit). The maximum bit-rate supported
is 3.5 Mbps. The I2S can be configured as a
master or slave device and supports both
mono and stereo. Automatic µ-Law expansion
and compression can also be configured. See
Section 13.4.6.6 for details.
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CC1110Fx / CC1111Fx
9.2
Radio
CC1110Fx/CC1111Fx features an RF transceiver
on the industry-leading CC1101,
based
10
requiring very few external components. See
Section 10 for details.
Application Circuit
Only a few external components are required
CC1110Fx/CC1111Fx. The
for
using
the
recommended application circuit for CC1110Fx is
shown in Figure 10. The recommended
application circuits for CC1111Fx are shown in
Figure 12. The recommended CC1111Fx circuit
uses a fundamental crystal. The external
components are described in Table 28, and
typical values are given in Table 29.
10.1 Bias Resistor
The bias resistor R271 is used to set an
accurate bias current.
10.2 Balun and RF Matching
The
balanced
RF
input
and
output
of
CC1110Fx/CC1111Fx share two common pins and
are designed for a simple, low-cost matching
and balun network on the printed circuit board.
The receive- and transmit switching at the
CC1110Fx/CC1111Fx front-end are controlled by a
dedicated on-chip function, eliminating the
need for an external RX/TX-switch.
A few passive external components combined
with the internal RX/TX switch/termination
circuitry ensure match in both RX and TX
mode.
Although CC1110Fx/CC1111Fx has a balanced RF
input/output, the chip can be connected to a
single-ended antenna with few external low
cost capacitors and inductors.
The
passive
matching/filtering
network
connected to CC1110Fx/CC1111Fx should have the
following differential impedance as seen from
the RF-port (RF_P and RF_N) towards the
antenna:
Zout @ 315 MHz = 122 + j31 Ω
Zout @ 433 MHz = 116 + j41 Ω
Zout @ 868 MHz = 86.5 + j43 Ω
To
ensure
optimal
matching
of
the
CC1110Fx/CC1111Fx differential output it is highly
recommended to follow the CC1110EM
reference designs [1] or the CC1111 USBDongle Reference Design [4] as closely as
possible. Gerber files and schematics for the
reference designs are available for download
from the TI website.
10.3 Crystal
The crystal oscillator for the CC1110Fx uses an
external crystal X1, with two loading capacitors
(C201 and C211) while the crystal oscillator for
the CC1111Fx uses an external crystal X3, with
two loading capacitors (C203 and C214) (see
Figure 10, Figure 11, Figure 12, and Table
28).
Note: The high speed crystal oscillator
must be stable (SLEEP.XOSC_STB=1)
before using the radio.
The recommended application circuits also
show the connections for an optional 32.768
kHz crystal oscillator with external crystal X2
and loading capacitors C181 and C171. This
crystal can be used by the Sleep Timer if more
accurate wake-up intervals are needed than
what the internal RC oscillator can provide.
When not using X2, P2_3 and P2_4 may be
used as general IO pins.
The loading capacitor values depend on the
total load capacitance, CL, specified for the
crystal. The total load capacitance seen
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Page 36 of 242
CC1110Fx / CC1111Fx
between the crystal terminals should equal CL
for the crystal to oscillate at the specified
frequency. For the CC1110Fx using the crystal
X1, the load capacitance CL is given as:
CL =
1
+ C Parasitic
1
1
+
C211 C 201
The parasitic capacitance is constituted by pin
input capacitance and PCB stray capacitance.
Total parasitic capacitance is typically 2.5 pF.
The crystal oscillator is amplitude regulated.
This means that a high current is used to start
up the oscillations. When the amplitude builds
up, the current is reduced to what is necessary
to maintain approximately 0.4 Vpp signal
swing. This ensures a fast start-up, and keeps
the drive level to a minimum. The ESR of the
crystal should be within the specification in
order to ensure a reliable start-up
10.4 USB (CC1111Fx)
For the CC1111Fx, the DP and DM pins need
series resistors R262 and R263 for impedance
matching and the D+ line must have a pull-up
resistor, R264. The series resistors should
match the 90 Ω ±15% characteristic
impedance of the USB bus.
Notice that the pull-up resistor must be tied to
a voltage source between 3.0 and 3.6 V
(typically 3.3 V). The voltage source must be
derived from or controlled by the VBUS power
supply provided by the USB cable. In this way,
the pull-up resistor does not provide current to
the D+ line when VBUS is removed. The pull-up
resistor may be connected directly between
VBUS and the D+ line. As an alternative, if the
CC1111Fx firmware needs the ability to
disconnect from the USB bus, an I/O pin on
the CC1111Fx can be used to control the pull-up
resistor.
10.5 Power Supply Decoupling
The power supply must be properly decoupled
close to the supply pins. Note that decoupling
capacitors are not shown in the application
circuit. The placement and the size of the
decoupling capacitors are very important to
achieve the optimum performance. TI provides
reference designs that should be followed
closely ([1], [2], [3] and [4]).
Figure 10: Application Circuit for CC1110Fx 315/433 MHz (excluding supply decoupling capacitors)
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Page 37 of 242
CC1110Fx / CC1111Fx
2.0 V - 3.6 V power supply
RBIAS 27
AVDD_DREG 29
GUARD 28
R271
AVDD 26
AVDD 25
L241
L242
C235
L233
RF_N 24
2,10 DVDD
L231
C233
L232
21 XOSC_Q1
19 AVDD
20 XOSC_Q2
17 XOSC32_Q1
18 XOSC32_Q2
AVDD 22
L234
C231 C232
RF_P 23
DIE ATTACH PAD:
30 DCOUPL
C301
Antenna
(50 Ohm)
C241
C234
C235'
L235
C236
Optional:
C181
X2
X1
C171
Alternative filter that can be
used to reduce the emission at
699 MHz below -54 dBm, for
conducted measurements.
C211
C201
21 XOSC_Q1
19 AVDD
RBIAS 27
20 XOSC_Q2
17 XOSC32_Q1
18 XOSC32_Q2
AVDD_DREG 29
GUARD 28
Figure 11: Application Circuit for CC1110Fx 868/915 MHz (excluding supply decoupling capacitors)
Figure 12: Application Circuit for CC1111Fx 868/915 MHz with Fundamental Crystal (excluding
supply decoupling capacitors)
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Page 38 of 242
CC1110Fx / CC1111Fx
Component
Description
C301
Decoupling capacitor for on-chip voltage regulator to digital part
C203/C214
Crystal loading capacitors (X3)
C201/C211
Crystal loading capacitors (X1)
L231/L241/C231
Low-pass filter/match
L232/L242/C234/
C241
Balun
L233/L234/C233
Filter
C234
DC block
L235/C236
Alternative filter to reduce the emission at 699 MHz
C235/C235’
DC block or part of filter to reduce emission at 699 MHz
C181/C171
Crystal loading capacitors if X2 is used.
L281
Crystal inductor
R271
Resistor for internal bias current reference
R264
D+ Pull-up resistor
R262/R263
D+ / D− series resistors for impedance matching
X1
26 - 27 MHz crystal
X2
32.768 kHz crystal, optional
X3
48 MHz crystal (fundamental)
Table 28: Overview of External Components (excluding supply decoupling capacitors)
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Page 39 of 242
CC1110Fx / CC1111Fx
Component
Value at 315 MHz
Value at 433 MHz
Value at 868/915 MHz
Manufacturer
C301
1 µF ± 10%, 0402 X5R
Murata GRM1555C series
C201/C211
27 pF ± 5%, 0402 NP0
Murata GRM1555C series
C203/C214
22 pF ± 5%,
0402 NP0
Murata GRM1555C series
C231
6.8 pF ± 0.5 pF,
0402 NP0
3.9 pF ± 0.25 pF,
0402 NP0
1.0 pF ± 0.25 pF,
0402 NP0
Murata GRM1555C series
C232
12 pF ± 5%, 0402
NP0
8.2 pF ± 0.5 pF,
0402 NP0
1.5 pF ± 0.25 pF,
0402 NP0
Murata GRM1555C series
C233
6.8 pF ± 0.5 pF,
0402 NP0
5.6 pF ± 0.5 pF,
0402 NP0
3.3 pF ± 0.25 pF,
0402 NP0
Murata GRM1555C series
C234
220 pF ± 5%,
0402 NP0
220 pF ± 5%,
0402 NP0
100 pF ± 5%,
0402 NP0
Murata GRM1555C series
C235
220 pF ± 5%,
0402 NP0
220 pF ± 5%,
0402 NP0
100 pF ± 5%,
0402 NP0
Murata GRM1555C series
C235’
12 pF ± 5%,
0402 NP0
Murata GRM1555C series
C236
47 pF ± 5%,
0402 NP0
Murata GRM1555C series
1.5 pF ± 0.25 pF,
0402 NP0
Murata GRM1555C series
C241
6.8 pF ± 0.5 pF,
0402 NP0
3.9 pF ± 0.25 pF,
0402 NP0
C171/C181
15pF ± 5%, 0402 NP0
Murata GRM1555C series
L231
33 nH ± 5%, 0402
monolithic
27 nH ± 5%,
0402 monolithic
12 nH ± 5%,
0402 monolithic
Murata LQG15HS series
L232
18 nH ± 5%,
0402 monolithic
22 nH ± 5%,
0402 monolithic
18 nH ± 5%,
0402 monolithic
Murata LQG15HS series
L233
33 nH ± 5%, 0402
monolithic
27 nH ± 5%,
0402 monolithic
12 nH ± 5%,
0402 monolithic
Murata LQG15HS series
12 nH ± 5%,
0402 monolithic
Murata LQG15HS series
12 nH ± 5%,
0402 monolithic
Murata LQG15HS series
L242
18 nH ± 5%,
0402 monolithic
Murata LQG15HS series
L235
3.3 nH ± 5%,
0402 monolithic
Murata LQG15HS series
R262/R263
33 Ω ± 2%, 0402
Koa RK73 series
1.5 kΩ ± 1%, 0402
Koa RK73 series
L234
L241
33 nH ± 5%, 0402
monolithic
27 nH ± 5%,
0402 monolithic
R264
R271
56 kΩ ± 1%, 0402
Koa RK73 series
X1
26.0 MHz surface mount crystal
NDK, AT-41CD2
X2
32.768 kHz surface mount crystal (optional)
Epson MC-306 Crystal
Unit
X3
48 MHz surface mount crystal
Abracon ABM8 series
Table 29: Bill of Materials for the CC1110Fx/CC1111Fx Application Circuits (subject to changes)
10.6 PCB Layout Recommendations
The top layer should be used for signal routing,
and the open areas should be filled with
metallization connected to ground using
several vias.
The area under the chip is used for grounding
and shall be connected to the bottom ground
plane with several vias for good thermal
performance and sufficiently low inductance to
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Page 40 of 242
CC1110Fx / CC1111Fx
ground. In the CC1110EM reference designs
[1] 9 vias are placed inside the exposed die
attached pad. These vias should be “tented”
(covered with solder mask) on the component
side of the PCB to avoid migration of solder
through the vias during the solder reflow
process.
The solder paste coverage should not be
100%. If it is, out gassing may occur during the
reflow process, which may cause defects
(splattering, solder balling). Using “tented” vias
reduces the solder paste coverage below
100%.
See Figure 13 for top solder resist and top
paste masks.
Each decoupling capacitor should be placed
as close as possible to the supply pin it is
supposed to decouple. The best routing is from
the power line to the decoupling capacitor and
then to the CC1110Fx supply pin. Supply power
filtering is very important.
Each decoupling capacitor ground pad should
be connected to the ground plane using a
separate via. Direct connections between
neighboring power pins will increase noise
coupling and should be avoided unless
absolutely necessary.
The external components should ideally be as
small as possible (0402 is recommended) and
surface
mount
devices
are
highly
recommended. Please note that components
smaller than those specified may have differing
characteristics.
Schematic, BOM, and layout Gerber files are
all available from the TI website for both the
CC1110EM reference designs [1], [2], [3] and
the CC1111 USB Dongle reference design [4].
Figure 13: Left: Top Solder Resist Mask (negative). Right: Top Paste Mask. Circles are Vias.
11
8051 CPU
This section describes the 8051 CPU core,
with interrupts, memory, and instruction set.
11.1 8051 Introduction
The CC1110Fx/CC1111Fx includes an 8-bit CPU
core which is an enhanced version of the
industry standard 8051 core.
The enhanced 8051 core uses the standard
8051 instruction set. Instructions execute
faster than the standard 8051 due to the
following:
• Wasted bus states are eliminated.
Since an instruction cycle is aligned with
memory fetch when possible, most of the
single byte instructions are performed in a
single clock cycle. In addition to the speed
improvement, the enhanced 8051 core also
includes architectural enhancements:
• One clock per instruction cycle is used
as opposed to 12 clocks per instruction
cycle in the standard 8051.
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• A second data pointer
• Extended 18-source interrupt unit
Page 41 of 242
CC1110Fx / CC1111Fx
The 8051 core is object code compatible with
the industry standard 8051 microcontroller.
That is, object code compiled with an industry
standard 8051 compiler or assembler
executes on the 8051 core and is functionally
equivalent. However, because the 8051 core
uses a different instruction-timing than many
other 8051 variants, existing code with timing
loops may require modification. Also because
the peripheral units such as timers and serial
ports differ from those on other 8051 cores,
code which includes instructions using the
peripheral units SFRs will not work correctly.
11.2 Memory
The 8051 CPU architecture has four different
memory spaces. The 8051 has separate
memory spaces for program memory and data
memory. The 8051 memory spaces are the
following (see Section 11.2.1 and 11.2.2 for
details):
CODE. A 16-bit read-only memory space for
program memory.
DATA. An 8-bit read/write data memory
space, which can be directly or indirectly,
accessed by a single cycle CPU instruction,
thus allowing fast access. The lower 128 bytes
of the DATA memory space can be addressed
either directly or indirectly, the upper 128 bytes
only indirectly.
XDATA. A 16-bit read/write data memory
space, which usually requires 4 - 5 CPU
instruction cycles to access, thus giving slow
access. XDATA assesses is also slower in
hardware than DATA accesses as the CODE
and XDATA memory spaces share a common
bus on the CPU core (instruction pre-fetch
from CODE can not be performed in parallel
with XDATA accesses).
DMA transfers
operation.
and
hardware
debugger
How the different memory spaces are mapped
onto the three physical memories (8/16/32 KB
flash program memory, 1/2/4 KB SRAM, and
hardware registers (SFR, radio, I2S, and USB
(CC1111Fx)) is described in Sections 11.2.1 and
11.2.2.
11.2.1
Memory Map
This section gives an overview of the memory
map.
Both the DATA and the SFR memory space is
mapped to the XDATA and CODE memory
space as shown in Figure 14, Figure 15, and
Figure 16 (the CODE and XDATA memory
spaces are mapped identically), and
CC1110FX/CC1111FX has what can be called a
unified memory space.
SFR. A 7-bit read/write register memory
space, which can be directly accessed by a
single CPU instruction. For SFRs whose
address is divisible by eight, each bit is also
individually addressable.
Mapping all the memory spaces to XDATA
allows the DMA controller access to all
physical memory and thus allows DMA
transfers between the different 8051 memory
spaces. This also means that any instruction
that read, write, or manipulate an XDATA
variable can be used on the entire unified
memory space, except writing to or changing
data in flash.
The four different memory spaces are distinct
in the 8051 architecture, but are partly
overlapping in the CC1110Fx/CC1111Fx to ease
Mapping all memory spaces to the CODE
memory space is primarily done to allow
program execution out of the SRAM/XDATA.
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Page 42 of 242
CC1110Fx / CC1111Fx
0xFF
0x00
DATA
Memory Space
0xFFFF
Fast Access RAM
0xFF00
0xFEFF
Unimplemented
0xF300
0xF2FF
0xF000
0xEFFF
0xFF
0x80
SFR Memory Space
0xE000
0xDFFF
0xDF80
0xDF00
0xDEFF
0xFFFF
0xDE40
0xDE3F
Slow Access RAM /
Program Memory in RAM
1 KB SRAM
Unimplemented
Hardware SFR Registers
Hardware Registers
Hardware Radio Registers /
I2S Registers
Unimplemented
USB Register (
)
0xDE00
0xDDFF
USB Registers
)
(
Unimplemented
XDATA
Memory Space
0x2000
0x1FFF
0x0000
Non-Volatile Program Memory
8 KB Flash
0x0000
0xFFFF
CODE
Memory Space
0x0000
Figure 14: CC1110F8/CC1111F8 Memory Mapping
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Page 43 of 242
CC1110Fx / CC1111Fx
0xFF
0x00
DATA
Memory Space
0xFFFF
0xFF00
0xFEFF
0xF700
0xF6FF
Fast Access RAM
Unimplemented
Slow Access RAM /
Program Memory in RAM
0xF000
0xEFFF
0xFF
0x80
SFR Memory Space
0xE000
0xDFFF
0xDF80
0xDF00
0xDEFF
0xFFFF
0xDE40
0xDE3F
0xDE00
0xDDFF
XDATA
Memory Space
2 KB SRAM
Unimplemented
Hardware SFR Registers
Hardware Registers
Hardware Radio Registers /
I2S Registers
Unimplemented
USB Register (
)
USB Registers
)
(
Unimplemented
0x4000
0x3FFF
Non-Volatile Program Memory
16 KB Flash
0x0000
0x0000
0xFFFF
CODE
Memory Space
0x0000
Figure 15: CC1110F16/CC1111F16 Memory Mapping
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CC1110Fx / CC1111Fx
0xFF
0xFFFF
DATA
Memory Space
0x00
Fast Access RAM
0xFF00
0xFEFF
Slow Access RAM /
Program Memory in RAM
0xF000
0xEFFF
0xFF
0x80
0xE000
0xDFFF
SFR Memory Space
0xDF80
0xDF00
0xDEFF
0xFFFF
0xDE40
0xDE3F
0xDE00
0xDDFF
4 KB SRAM
Unimplemented
Hardware SFR Registers
Hardware Registers
Hardware Radio Registers /
I2S Registers
Unimplemented
)
USB Register (
USB Registers
)
(
Unimplemented
0x8000
0x7FFF
XDATA
Memory Space
Non-Volatile Program Memory
32 KB Flash
0x0000
0x0000
0xFFFF
CODE
Memory Space
0x0000
Figure 16: CC1110F32/CC1111F32 Memory Mapping
Details about the mapping of all 8051 memory
spaces are given in the next section.
11.2.2
8051 Memory Space
This section describes the details of each
standard 8051 memory space. Any differences
between
the
standard
8051
and
CC1110Fx/CC1111Fx is described.
11.2.2.1
XDATA Memory Space
On a standard 8051 this memory space would
hold any extra RAM available.
consideration that the first address of usable
SRAM start at 0xF000 instead of 0x0000.
The 350 bytes of XDATA in location 0xFDA2 0xFEFF on CC1110F32 and CC1111F32 do not
retain data when power modes PM2 or PM3
are entered. Refer to Section 13.1.2 on Page
77 for a detailed description of power modes.
The 256 bytes from 0xFF00 to 0xFFFF are the
DATA memory space mapped to XDATA.
These bytes are also reached through the
DATA memory space.
In addition the following is mapped into the
XDATA memory space:
The 8, 16, and 32 KB flash program memory is
mapped into the address ranges 0x0000 0x1FFF, 0x0000 - 0x3FFF, and 0x0000 0x7FFF respectively.
The CC1110Fx/CC1111Fx has a total of 1, 2, or 4
KB SRAM, starting at address 0xF000.
Compilers/assemblers
must
take
into
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• Radio registers are mapped
address range 0xDF00 - 0xDF3D.
into
• I2S registers are mapped into the
address range 0xDF40 - 0xDF48.
Page 45 of 242
CC1110Fx / CC1111Fx
• All SFR except the registers shown in
gray in Table 30 are mapped into
address range 0xDF80 - 0xDFFF.
• The USB registers are mapped into the
address range 0xDE00 - 0xDE3F on the
CC1111Fx, but are not implemented on the
CC1110Fx.
This memory mapping allows the DMA
controller (and the CPU) access to all the
physical memories in a single unified address
space.
Be aware that access to unimplemented areas
in the unified memory space will give an
undefined result.
11.2.2.2
CODE Memory Space
On a standard 8051 this memory space would
hold the program memory, where the MCU
reads the program/instructions.
All memory spaces are mapped into the CODE
memory space and the mapping is identical to
the XDATA memory space, hence the
CC1110Fx/CC1111Fx has what can be referred to
as a unified memory space.
Due to this, the CC1110Fx/CC1111Fx allows
execution of a program stored in SRAM. This
allows the program to be easily updated
without writing to flash (which have a limited
erase/write cycles) This is particularly useful
on the CC1111Fx, where parts of the firmware
can be downloaded from the windows USB
driver.
Executing a program from SRAM instead of
flash will also result in a lower power
consumption and may be interesting for battery
powered devices.
11.2.2.3
DATA Memory Space
The 8-bit address range of DATA memory
space is mapped into address 0xFF00 0xFFFF and is accessible through the unified
memory space. Just like on a standard 8051,
the upper 128 byte share address with the
SFR and can only be accessed indirectly, the
stack is normally located here. The lower 48
bytes are reserved, and hold 4 register banks
used by the MCU. The 16 bytes on addresses
0x20 to 0x2F are bit addressable.
11.2.2.4
SFR Memory Space
The SFR memory space is identical to a
standard 8051.
The 128 hardware SFRs are accessed through
this memory space.
Unlike on a standard 8051, the SFRs are also
accessible through the XDATA and CODE
memory space at the address range 0xDF80 0xDFFF.
Some CPU-specific SFRs reside inside the
CPU core and can only be accessed using the
SFR memory space and not through the
duplicate mapping into XDATA/CODE memory
space. These registers are shown in gray in
Table 30. Be aware that these registers can
not be accessed using DMA.
11.2.3
11.2.3.1
Physical Memory
SRAM
The CC1110Fx/CC1111Fx contains static RAM. At
power-on the contents of RAM is undefined.
The RAM size is 1, 2, or 4 KB in total, mapped
to the memory range 0xF000 - 0xFFFF. In the
F8 version, memory range 0xF300 - 0xFEFF is
unimplemented while on the F16 version,
memory range 0xF700 - 0xFEFF is
unimplemented.
The memory locations 0xFDA2 - 0xFEFF on
the F32 version consist of 350 bytes in unified
memory space which do not retain data when
power modes PM2 or PM3 is entered. All other
RAM memory locations are retained in all
power modes.
11.2.3.2
Flash Memory
The on-chip flash memory
16384, or 32768 bytes (F8,
flash memory is primarily
program code. The flash
following features:
consists of 8192,
F16, and F32). The
intended to hold
memory has the
• Flash page erase time: 20 ms
• Flash chip (mass) erase time: 200 ms
• Flash write time (2 bytes): 20 µs
• Data retention (at room temperature):
100 years
• Program/erase
1,000 cycles
The DATA memory will retain its contents in all
four power modes.
endurance:
Minimum
The flash memory consists of the Flash Main
Pages (up to 32 times 1 KB) which is where
the CPU reads program code and data. The
flash memory also contains a Flash
SWRS033F
Page 46 of 242
CC1110Fx / CC1111Fx
Information Page (1 KB) which contains the
Flash Lock Bits. The lock protect bits are
written as a normal flash write to FWDATA but
the Debug Interface needs to select the Flash
Information Page first instead of the Flash
Main Page. The Information Page is selected
through the Debug Configuration which is
written through the Debug Interface only. The
Flash Controller (see Section 13.3) is used to
write and erase the contents of the flash main
memory.
11.2.3.3
Special Function Registers
The Special Function Registers (SFRs) control
several of the features of the 8051 CPU core
and/or peripherals. Many of the 8051 core
SFRs are identical to the standard 8051 SFRs.
However, there are additional SFRs that
control features that are not available in the
standard 8051. The additional SFRs are used
to interface with the peripheral units and RF
transceiver.
Table 30 shows the address to all SFRs in
CC1110Fx/CC1111Fx. The 8051 internal SFRs are
shown with grey background, while the other
SFRs are specific to CC1110Fx/CC1111Fx.
When the CPU reads instructions from flash
memory, it fetches the next instruction through
a cache. The instruction cache is provided
mainly to reduce power consumption by
reducing the amount of time the flash memory
itself is accessed. The use of the instruction
cache
may
be
disabled
with
the
MEMCTR.CACHDIS register bit, but doing so
will increase power consumption.
Note: All internal SFRs (shown with grey
background in Table 30, can only be accessed
through SFR memory space as these registers
are not mapped into XDATA memory space.
Table 31 lists the additional SFRs that are not
standard 8051 peripheral SFRs or CPUinternal SFRs. The additional SFRs are
described in the relevant sections for each
peripheral function.
8 Bytes
80
P0
SP
DPL0
DPH0
DPL1
DPH1
88
TCON
P0IFG
P1IFG
P2IFG
PICTL
P1IEN
90
P1
RFIM
DPS
MPAGE
98
S0CON
IEN2
S1CON
T2CT
T2PR
T2CTL
9F
A0
P2
WORIRQ
WORCTRL
WOREVT0
WOREVT1
WORTIME0
WORTIME1
A7
A8
IEN0
IP0
FWT
FADDRL
FADDRH
FCTL
ENCDO
ENCCS
ADCCON1
ADCCON2
ADCCON3
ADCH
B0
ENCDI
B8
IEN1
IP1
ADCL
C0
IRCON
U0DBUF
U0BAUD
WDCTL
T3CNT
C8
U0CSR
PCON
87
P0INP
8F
ENDIAN
97
FWDATA
AF
B7
RNDL
RNDH
SLEEP
U0UCR
U0GCR
CLKCON
MEMCTR
BF
C7
T3CTL
T3CCTL0
T3CC0
T3CCTL1
T3CC1
CF
D0
PSW
DMAIRQ
DMA1CFGL
DMA1CFGH
DMA0CFGL
DMA0CFGH
DMAARM
DMAREQ
D7
D8
TIMIF
RFD
T1CC0L
T1CC0H
T1CC1L
T1CC1H
T1CC2L
T1CC2H
DF
E0
ACC
RFST
T1CNTL
T1CNTH
T1CTL
T1CCTL0
T1CCTL1
T1CCTL2
E7
E8
IRCON2
RFIF
T4CNT
T4CTL
T4CCTL0
T4CC0
T4CCTL1
T4CC1
EF
F0
B
PERCFG
ADCCFG
P0SEL
P1SEL
P2SEL
P1INP
P2INP
F7
F8
U1CSR
U1DBUF
U1BAUD
U1UCR
U1GCR
P0DIR
P1DIR
P2DIR
FF
Table 30: SFR Address Overview
SWRS033F
Page 47 of 242
CC1110Fx / CC1111Fx
Register
Name
SFR
Address
Module
Description
Retention
ADCCON1
0xB4
ADC
ADC Control 1
Y
ADCCON2
0xB5
ADC
ADC Control 2
Y
ADCCON3
0xB6
ADC
ADC Control 3
Y
ADCL
0xBA
ADC
ADC Data Low
Y
ADCH
0xBB
ADC
ADC Data High
Y
RNDL
0xBC
ADC
Random Number Generator Data Low
Y
RNDH
0xBD
ADC
Random Number Generator Data High
Y
ENCDI
0xB1
AES
Encryption/Decryption Input Data
N
ENCDO
0xB2
AES
Encryption/Decryption Output Data
N
ENCCS
0xB3
AES
Encryption/Decryption Control and Status
N
DMAIRQ
0xD1
DMA
DMA Interrupt Flag
Y
DMA1CFGL
0xD2
DMA
DMA Channel 1 - 4 Configuration Address Low
Y
DMA1CFGH
0xD3
DMA
DMA Channel 1 - 4 Configuration Address High
Y
DMA0CFGL
0xD4
DMA
DMA Channel 0 Configuration Address Low
Y
5
DMA0CFGH
0xD5
DMA
DMA Channel 0 Configuration Address High
Y
DMAARM
0xD6
DMA
DMA Channel Arm
Y
DMAREQ
0xD7
DMA
DMA Channel Start Request and Status
Y
FWT
0xAB
FLASH
Flash Write Timing
Y
FADDRL
0xAC
FLASH
Flash Address Low
Y
FADDRH
0xAD
FLASH
Flash Address High
Y
FCTL
0xAE
FLASH
Flash Control
[7:1]Y, [1:0]N
FWDATA
0xAF
FLASH
Flash Write Data
Y
P0IFG
0x89
IOC
Port 0 Interrupt Status Flag
Y
P1IFG
0x8A
IOC
Port 1 Interrupt Status Flag
Y
P2IFG
0x8B
IOC
Port 2 Interrupt Status Flag
Y
PICTL
0x8C
IOC
Port Pins Interrupt Mask and Edge
Y
P1IEN
0x8D
IOC
Port 1 Interrupt Mask
Y
P0INP
0x8F
IOC
Port 0 Input Mode
Y
PERCFG
0xF1
IOC
Peripheral I/O Control
Y
ADCCFG
0xF2
IOC
ADC Input Configuration
Y
P0SEL
0xF3
IOC
Port 0 Function Select
Y
P1SEL
0xF4
IOC
Port 1 Function Select
Y
P2SEL
0xF5
IOC
Port 2 Function Select
Y
P1INP
0xF6
IOC
Port 1 Input Mode
Y
P2INP
0xF7
IOC
Port 2 Input Mode
Y
P0DIR
0xFD
IOC
Port 0 Direction
Y
P1DIR
0xFE
IOC
Port 1 Direction
Y
P2DIR
0xFF
IOC
Port 2 Direction
Y
MEMCTR
0xC7
MEMORY
Memory System Control
Y
5
Registers without retention are in their reset state after PM2 or PM3. This is only applicable for
registers / bits that are defined as R/W
SWRS033F
Page 48 of 242
CC1110Fx / CC1111Fx
SFR
Address
Module
Description
SLEEP
0xBE
PMC
Sleep Mode Control
[6:2]Y, [7,1:0]N
CLKCON
0xC6
PMC
Clock Control
Y
RFIM
0x91
RF
RF Interrupt Mask
Y
RFD
0xD9
RF
RF Data
N
RFIF
0xE9
RF
RF Interrupt flags
Y
RFST
0xE1
RF
RF Strobe Commands
NA
WORIRQ
0xA1
Sleep Timer
Sleep Timer Interrupts
Y
WORCTRL
0xA2
Sleep Timer
Sleep Timer Control
Y
WOREVT0
0xA3
Sleep Timer
Sleep Timer Event 0 Timeout Low Byte
Y
WOREVT1
0xA5
Sleep Timer
Sleep Timer Event 0 Timeout High Byte
Y
WORTIME0
0xA4
Sleep Timer
Sleep Timer Low Byte
Y
WORTIME1
0xA6
Sleep Timer
Sleep Timer High Byte
Y
T1CC0L
0xDA
Timer1
Timer 1 Channel 0 Capture/Compare Value Low
Y
T1CC0H
0xDB
Timer1
Timer 1 Channel 0 Capture/Compare Value High
Y
T1CC1L
0xDC
Timer1
Timer 1 Channel 1 Capture/Compare Value Low
Y
T1CC1H
0xDD
Timer1
Timer 1 Channel 1 Capture/Compare Value High
Y
T1CC2L
0xDE
Timer1
Timer 1 Channel 2 Capture/Compare Value Low
Y
T1CC2H
0xDF
Timer1
Timer 1 Channel 2 Capture/Compare Value High
Y
T1CNTL
0xE2
Timer1
Timer 1 Counter Low
Y
T1CNTH
0xE3
Timer1
Timer 1 Counter High
Y
T1CTL
0xE4
Timer1
Timer 1 Control and Status
Y
T1CCTL0
0xE5
Timer1
Timer 1 Channel 0 Capture/Compare Control
Y
T1CCTL1
0xE6
Timer1
Timer 1 Channel 1 Capture/Compare Control
Y
T1CCTL2
0xE7
Timer1
Timer 1 Channel 2 Capture/Compare Control
Y
T2CT
0x9C
Timer2
Timer 2 Timer Count
N
T2PR
0x9D
Timer2
Timer 2 Prescaler
N
T2CTL
0x9E
Timer2
Timer 2 Control
N
T3CNT
0xCA
Timer3
Timer 3 Counter
Y
T3CTL
0xCB
Timer3
Timer 3 Control
Y,[2]N
T3CCTL0
0xCC
Timer3
Timer 3 Channel 0 Capture/Compare Control
Y
T3CC0
0xCD
Timer3
Timer 3 Channel 0 Capture/Compare Value
Y
T3CCTL1
0xCE
Timer3
Timer 3 Channel 1 Capture/Compare Control
Y
T3CC1
0xCF
Timer3
Timer 3 Channel 1 Capture/Compare Value
Y
T4CNT
0xEA
Timer4
Timer 4 Counter
Y
T4CTL
0xEB
Timer4
Timer 4 Control
Y,[2]N
T4CCTL0
0xEC
Timer4
Timer 4 Channel 0 Capture/Compare Control
Y
T4CC0
0xED
Timer4
Timer 4 Channel 0 Capture/Compare Value
Y
T4CCTL1
0xEE
Timer4
Timer 4 Channel 1 Capture/Compare Control
Y
T4CC1
0xEF
Timer4
Timer 4 Channel 1 Capture/Compare Value
Y
TIMIF
0xD8
TMINT
Timers 1/3/4 Joint Interrupt Mask/Flags
Y
U0CSR
0x86
USART0
USART 0 Control and Status
Y
U0DBUF
0xC1
USART0
USART 0 Receive/Transmit Data Buffer
Y
SWRS033F
Retention
5
Register
Name
Page 49 of 242
CC1110Fx / CC1111Fx
Register
Name
SFR
Address
Module
Description
Retention
U0BAUD
0xC2
USART0
USART 0 Baud Rate Control
Y
U0UCR
0xC4
USART0
USART 0 UART Control
Y,[7]N
U0GCR
0xC5
USART0
USART 0 Generic Control
Y
U1CSR
0xF8
USART1
USART 1 Control and Status
Y
U1DBUF
0xF9
USART1
USART 1 Receive/Transmit Data Buffer
Y
U1BAUD
0xFA
USART1
USART 1 Baud Rate Control
Y
U1UCR
0xFB
USART1
USART 1 UART Control
Y,[7]N
U1GCR
0xFC
USART1
USART 1 Generic Control
Y
ENDIAN
0x95
MEMORY
USB Endianess Control (CC1111Fx)
Y
WDCTL
0xC9
WDT
Watchdog Timer Control
Y
5
Table 31: CC1110Fx/CC1111Fx Specific SFR Overview
11.2.3.4
Radio Registers
The radio registers are all related to Radio
configuration and control. The RF registers can
only be accessed through XDATA memory
space and reside in address range 0xDF00 0xDF3D.
Table 32 gives a descriptive overview of these
registers. Each register is described in detail in
Section 14.19, starting on Page 210.
XDATA
Address
Register
Description
Retention
0xDF00
SYNC1
Sync word, high byte
Y
0xDF01
SYNC0
Sync word, low byte
Y
0xDF02
PKTLEN
Packet length
Y
0xDF03
PKTCTRL1
Packet automation control
Y
0xDF04
PKTCTRL0
Packet automation control
Y
0xDF05
ADDR
Device address
Y
0xDF06
CHANNR
Channel number
Y
0xDF07
FSCTRL1
Frequency synthesizer control
Y
0xDF08
FSCTRL0
Frequency synthesizer control
Y
0xDF09
FREQ2
Frequency control word, high byte
Y
0xDF0A
FREQ1
Frequency control word, middle byte
Y
0xDF0B
FREQ0
Frequency control word, low byte
Y
0xDF0C
MDMCFG4
Modem configuration
Y
0xDF0D
MDMCFG3
Modem configuration
Y
0xDF0E
MDMCFG2
Modem configuration
Y
0xDF0F
MDMCFG1
Modem configuration
Y
0xDF10
MDMCFG0
Modem configuration
Y
0xDF11
DEVIATN
Modem deviation setting
Y
0xDF12
MCSM2
Main Radio Control State Machine configuration
Y
0xDF13
MCSM1
Main Radio Control State Machine configuration
Y
6
6
Registers without retention are in their reset state after PM2 or PM3. This is only applicable for
registers / bits that are defined as R/W
SWRS033F
Page 50 of 242
CC1110Fx / CC1111Fx
XDATA
Address
Register
Description
Retention
0xDF14
MCSM0
Main Radio Control State Machine configuration
Y
0xDF15
FOCCFG
Frequency Offset Compensation configuration
Y
0xDF16
BSCFG
Bit Synchronization configuration
Y
0xDF17
AGCCTRL2
AGC control
Y
0xDF18
AGCCTRL1
AGC control
Y
0xDF19
AGCCTRL0
AGC control
Y
0xDF1A
FREND1
Front end RX configuration
Y
0xDF1B
FREND0
Front end TX configuration
Y
0xDF1C
FSCAL3
Frequency synthesizer calibration
N
0xDF1D
FSCAL2
Frequency synthesizer calibration
N
0xDF1E
FSCAL1
Frequency synthesizer calibration
N
0xDF1F
FSCAL0
Frequency synthesizer calibration
Y
Reserved
Y
0xDF20
0xDF22
0xDF23
TEST2
Various Test Settings
Y
0xDF24
TEST1
Various Test Settings
Y
0xDF25
TEST0
Various Test Settings
Y
0xDF27
PA_TABLE7
PA output power setting 7
Y
0xDF28
PA_TABLE6
PA output power setting 6
Y
0xDF29
PA_TABLE5
PA output power setting 5
Y
0xDF2A
PA_TABLE4
PA output power setting 4
Y
0xDF2B
PA_TABLE3
PA output power setting 3
Y
0xDF2C
PA_TABLE2
PA output power setting 2
Y
0xDF2D
PA_TABLE1
PA output power setting 1
Y
0xDF2E
PA_TABLE0
PA output power setting 0
Y
0xDF2F
IOCFG2
Radio test signal configuration (P1_7)
Y
0xDF30
IOCFG1
Radio test signal configuration (P1_6)
Y
0xDF31
IOCFG0
Radio test signal configuration (P1_5)
Y
0xDF36
PARTNUM
Chip ID[15:8]
NA
0xDF37
VERSION
Chip ID[7:0]
NA
0xDF38
FREQEST
Frequency Offset Estimate
NA
0xDF39
LQI
Link Quality Indicator
NA
0xDF3A
RSSI
Received Signal Strength Indication
NA
0xDF3B
MARCSTATE
Main Radio Control State
NA
0xDF3C
PKTSTATUS
Packet status
NA
0xDF3D
VCO_VC_DAC
PLL calibration current
NA
6
Table 32: Overview of RF Registers
11.2.3.5
2
I2S Registers
2
The I S registers are all related to I S
configuration and control. The I2S registers can
only be accessed through XDATA memory
space and reside in address range 0xDF40 0xDF48. Table 33 gives a descriptive overview
of these registers. Each register is described in
detail in Section 13.15.13, starting on Page
167.
SWRS033F
Page 51 of 242
CC1110Fx / CC1111Fx
XDATA
Address
Register
Description
0xDF40
I2SCFG0
I S Configuration Register 0
0xDF41
I2SCFG1
I S Configuration Register 1
0xDF42
0xDF43
0xDF44
0xDF45
0xDF46
0xDF47
0xDF48
I2SDATL
Retention
2
Y
2
Y
2
N
2
N
2
NA
2
NA
2
Y
2
Y
2
Y
I S Data Low Byte
I2SDATH
I S Data High Byte
I2SWCNT
I2SSTAT
I S Word Count Register
I S Status Register
I2SCLKF0
I2SCLKF1
I2SCLKF2
I S Clock Configuration Register 0
I S Clock Configuration Register 1
I S Clock Configuration Register 2
7
Table 33: Overview of I2S Registers
7
Registers without retention are in their reset state after PM2 or PM3. This is only applicable for
registers / bits that are defined as R/W
11.2.3.6
USB Registers
The USB registers are all related to USB
configuration and control. The USB registers
can only be accessed through XDATA
memory space and reside in address range
0xDE00 - 0xDE3F. These registers can be
divided into three groups: The Common USB
Registers (Table 34), The Indexed Endpoint
Registers (Table 35), and the Endpoint FIFO
XDATA
Address
Register
Description
0xDE00
USBADDR
Function Address
0xDE01
USBPOW
Power/Control Register
0xDE02
USBIIF
IN Endpoints and EP0 Interrupt Flags
0xDE03
0xDE04
Registers (Table 36). Each register is
described in detail in Section 13.16.11, starting
on Page 179. Notice that the upper register
addresses 0xDE2C - 0xDE3F are reserved.
Note: All USB registers lose data in PM2
and PM3, meaning that these power
modes cannot be used on the CC1111Fx
Reserved
USBOIF
0xDE05
OUT Endpoints Interrupt Flags
Reserved
0xDE06
USBCIF
Common USB Interrupt Flags
0xDE07
USBIIE
IN Endpoints and EP0 Interrupt Enable Mask
0xDE08
0xDE09
Reserved
USBOIE
0xDE0A
Out Endpoints Interrupt Enable Mask
Reserved
0xDE0B
USBCIE
Common USB Interrupt Enable Mask
0xDE0C
USBFRML
Current Frame Number (Low byte)
0xDE0D
USBFRMH
Current Frame Number (High byte)
0xDE0E
USBINDEX
Selects current endpoint. Make sure this register has the required value before any of the
registers in Table 35 are accessed. This register must be set to a value in the range 0 - 5.
Table 34: Overview of Common USB Registers
SWRS033F
Page 52 of 242
CC1110Fx / CC1111Fx
XDATA
Address
Register
0xDE10
USBMAXI
Max. packet size for IN endpoint
1-5
USBCS0
EP0 Control and Status (USBINDEX = 0)
0
USBCSIL
IN EP{1 - 5} Control and Status Low
1-5
0xDE12
USBCSIH
IN EP{1 - 5} Control and Status High
1-5
0xDE13
USBMAXO
Max. packet size for OUT endpoint
1-5
0xDE14
USBCSOL
OUT EP{1 - 5} Control and Status Low
1-5
0xDE15
USBCSOH
OUT EP{1 - 5} Control and Status High
1-5
USBCNT0
Number of received bytes in EP0 FIFO (USBINDEX = 0)
0
USBCNTL
Number of bytes in OUT FIFO Low
1-5
USBCNTH
Number of bytes in OUT FIFO High
1-5
0xDE11
0xDE16
0xDE17
Description
Valid USBINDEX
Value(s)
Table 35: Overview of Indexed Endpoint Registers
XDATA
Address
Register
Description
0xDE20
USBF0
Endpoint 0 FIFO
0xDE22
USBF1
Endpoint 1 FIFO
0xDE24
USBF2
Endpoint 2 FIFO
0xDE26
USBF3
Endpoint 3 FIFO
0xDE28
USBF4
Endpoint 4 FIFO
0xDE2A
USBF5
Endpoint 5 FIFO
Table 36: Overview of Endpoint FIFO Registers
11.2.4
XDATA Memory Access
The CC1110Fx/CC1111Fx provides an additional
SFR named MPAGE. This register is used
during instructions MOVX A,@Ri and MOVX
@Ri,A. MPAGE gives the 8 most significant
address bits, while the register Ri gives the 8
least significant bits.
In some 8051 implementations, this type of
XDATA access is performed using P2 to give
the most significant address bits. Existing
software may therefore have to be adapted to
make use of MPAGE instead of P2.
MPAGE (0x93) - Memory Page Select
Bit
Name
Reset
R/W
Description
7:0
MPAGE[7:0]
0x00
R/W
Memory page, high-order bits of address in MOVX instruction
11.2.5
Memory Arbiter
The CC1110Fx/CC1111Fx includes a memory
arbiter which handles CPU and DMA access to
all memory space.
A control register MEMCTR is used to control
the flash cache. The MEMCTR register is
described below.
SWRS033F
Page 53 of 242
CC1110Fx / CC1111Fx
MEMCTR (0xC7) - Memory Arbiter Control
Bit
Name
7:2
1
0
CACHDIS
Reset
R/W
Description
0
R/W
Not used
0
R/W
Flash cache disable. Invalidates contents of instruction cache and forces all
instruction read accesses to read straight from flash memory. Disabling will
increase power consumption and is provided for debug purposes.
1
PREFDIS
R/W
0
Cache enabled
1
Cache disabled
Flash prefetch disable. When set prefetch of flash data is disabled, when
cleared the next two bytes in flash are fetched when last byte in cache is
read.
0
Prefetch enabled
1
Prefetch disabled
11.3 CPU Registers
This section describes the internal registers
found in the CPU.
11.3.1
Data Pointers
The CC1110Fx/CC1111Fx has two data pointers,
DPTR0 and DPTR1, to accelerate the
movement of data blocks to/from memory. The
data pointers are generally used to access
CODE or XDATA space e.g.
The data pointer select bit, bit 0 in the Data
Pointer Select register DPS, chooses which
data pointer to use during the execution of an
instruction that uses the data pointer, e.g. in
one of the above instructions.
The data pointers are two bytes
consisting of the following SFRs:
wide
• DPTR0 - DPH0:DPL0
• DPTR1 - DPH1:DPL1
MOVC A,@A+DPTR
MOV A,@DPTR.
DPH0 (0x83) - Data Pointer 0 High Byte
Bit
Name
Reset
R/W
Description
7:0
DPH0[7:0]
0
R/W
Data pointer 0, high byte
DPL0 (0x82) - Data Pointer 0 Low Byte
Bit
Name
Reset
R/W
Description
7:0
DPL0[7:0]
0
R/W
Data pointer 0, low byte
DPH1 (0x85) - Data Pointer 1 High Byte
Bit
Name
Reset
R/W
Description
7:0
DPH1[7:0]
0
R/W
Data pointer 1, high byte
DPL1 (0x84) - Data Pointer 1 Low Byte
Bit
Name
Reset
R/W
Description
7:0
DPL1[7:0]
0
R/W
Data pointer 1, low byte
SWRS033F
Page 54 of 242
CC1110Fx / CC1111Fx
DPS (0x92) - Data Pointer Select
Bit
Name
Reset
0
R/W
Not used
DPS
0
R/W
Data pointer select
7:1
0
11.3.2
R/W
Description
0
DPTR0
1
DPTR1
11.3.3
Registers R0 - R7
The CC1110Fx/CC1111Fx provides four register
banks of eight registers each. These register
banks are in the DATA memory space at
addresses 0x00 - 0x07, 0x08 - 0x0F, 0x10 0x17 and 0x18 - 0x1F and are mapped to
address range 0xFF00 to 0xFF1F in the
unified memory space. Each register bank
contains the eight 8-bit register R0 - R7. The
register bank to be used is selected through
the Program Status Word PSW.RS[1:0].
Program Status Word
The Program Status Word (PSW) contains
several bits that show the current state of the
CPU. The Program Status Word is accessible
as an SFR and it is bit-addressable. The PSW
register contains the Carry flag, Auxiliary Carry
flag for BCD operations, Register Select bits,
Overflow flag, and Parity flag. Two bits in PSW
are uncommitted and can be used as userdefined status flags.
PSW (0xD0) - Program Status Word
Bit
Name
Reset
R/W
Description
7
CY
0
R/W
Carry flag. Set to 1 when the last arithmetic operation resulted in a carry
(during addition) or borrow (during subtraction), otherwise cleared to 0 by all
arithmetic operations.
6
AC
0
R/W
Auxiliary carry flag for BCD operations. Set to 1 when the last arithmetic
operation resulted in a carry into (during addition) or borrow from (during
subtraction) the high order nibble, otherwise cleared to 0 by all arithmetic
operations.
5
F0
0
R/W
User-defined, bit-addressable
4:3
RS[1:0]
00
R/W
Register bank select bits. Selects which set of R7 - R0 registers to use from
four possible register banks in DATA space.
00
Bank 0, 0x00 - 0x07
01
Bank 1, 0x08 - 0x0F
10
Bank 2, 0x10 - 0x17
11
Bank 3, 0x18 - 0x1F
2
OV
0
R/W
Overflow flag, set by arithmetic operations. Set to 1 when the last arithmetic
operation resulted in a carry (addition), borrow (subtraction), or overflow
(multiply or divide). Otherwise, the bit is cleared to 0 by all arithmetic
operations.
1
F1
0
R/W
User-defined, bit-addressable
0
P
0
R/W
Parity flag, parity of accumulator set by hardware to 1 if it contains an odd
number of 1’s, otherwise it is cleared to 0
11.3.4
Accumulator
ACC is the accumulator. This is the source
and destination of most arithmetic instructions,
data transfer and other instructions. The
mnemonic for the accumulator (in instructions
involving the accumulator) refers to A instead
of ACC.
SWRS033F
Page 55 of 242
CC1110Fx / CC1111Fx
ACC (0xE0) - Accumulator
Bit
Name
Reset
R/W
Description
7:0
ACC[7:0]
0x00
R/W
Accumulator
11.3.5
B Register
The B register is used as the second 8-bit
argument during execution of multiply and
divide instructions. When not used for these
purposes it may be used as a scratch-pad
register to hold temporary data.
B (0xF0) - B Register
Bit
Name
Reset
R/W
Description
7:0
B[7:0]
0x00
R/W
B register. Used in MUL and DIV instructions.
11.3.6
Stack Pointer
The stack resides in DATA memory space and
grows upwards. The PUSH instruction first
increments the Stack Pointer (SP) and then
copies the byte into the stack. The Stack
Pointer is initialized to 0x07 after a reset and it
is incremented once to start from location
0x08, which is the first register (R0) of the
second register bank. Thus, in order to use
more than one register bank, the SP should be
initialized to a different location not used for
data storage.
SP (0x81) - Stack Pointer
Bit
Name
Reset
R/W
Description
7:0
SP[7:0]
0x07
R/W
Stack Pointer
11.4 Instruction Set Summary
The 8051 instruction set is summarized in
Table 37. All mnemonics copyrighted © Intel
Corporation 1980.
can be anywhere within the 8/16/32 KB
CODE memory space.
• addr11 - 11-bit destination address.
Used by ACALL and AJMP. The branch
will be within the same 2 KB page of
program memory as the first byte of the
following instruction.
The following conventions are used in the
instruction set summary:
• Rn - Register R7 - R0 of the currently
selected register bank.
• rel - Signed (two’s complement) 8-bit
offset byte. Used by SJMP and all
conditional jumps. Range is –128 to
+127 bytes relative to first byte of the
following instruction.
• direct - 8-bit internal data location’s
address. This can be DATA area (0x00 0x7F) or SFR area (0x80 - 0xFF).
• @Ri - 8-bit internal data location, DATA
area (0x00 - 0xFF) addressed indirectly
through register R1 or R0.
• #data - 8-bit constant included in
instruction.
• #data16 - 16-bit constant included in
instruction.
• bit - direct addressed bit in DATA area
or SFR.
The instructions that affect CPU flag settings
located in PSW are listed in Table 38 on Page
60. Note that operations on the PSW register or
bits in PSW will also affect the flag settings.
• addr16 - 16-bit destination address.
Used by LCALL and LJMP. A branch
SWRS033F
Page 56 of 242
CC1110Fx / CC1111Fx
Mnemonic
Description
Hex Opcode
Bytes
Cycles
ADD A,Rn
Add register to accumulator
0x28 - 0x2F
1
1
ADD A,direct
Add direct byte to accumulator
0x25
2
2
ADD A,@Ri
Add indirect RAM to accumulator
0x26 - 0x 27
1
2
ADD A,#data
Add immediate data to accumulator
0x24
2
2
ADDC A,Rn
Add register to accumulator with carry flag
0x38 - 0x 3F
1
1
ADDC A,direct
Add direct byte to A with carry flag
0x35
2
2
ADDC A,@Ri
Add indirect RAM to A with carry flag
0x36 - 0x 37
1
2
ADDC A,#data
Add immediate data to A with carry flag
0x34
2
2
SUBB A,Rn
Subtract register from A with borrow
0x98 - 0x 9F
1
1
SUBB A,direct
Subtract direct byte from A with borrow
0x95
2
2
SUBB A,@Ri
Subtract indirect RAM from A with borrow
0x96 - 0x97
1
2
SUBB A,#data
Subtract immediate data from A with borrow
0x94
2
2
INC A
Increment accumulator
0x04
1
1
INC Rn
Increment register
0x08 - 0x 0F
1
2
INC direct
Increment direct byte
0x05
2
3
INC @Ri
Increment indirect RAM
0x06 - 0x 07
1
3
INC DPTR
Increment data pointer
0xA3
1
1
DEC A
Decrement accumulator
0x14
1
1
DEC Rn
Decrement register
0x8 - 0x1F
1
2
DEC direct
Decrement direct byte
0x15
2
3
DEC @Ri
Decrement indirect RAM
0x16 - 17
1
3
MUL AB
Multiply A and B
0xA4
1
5
DIV
Divide A by B
0x84
1
5
DA A
Decimal adjust accumulator
0xD4
1
1
ANL A,Rn
AND register to accumulator
0x58 - 0x5F
1
1
ANL A,direct
AND direct byte to accumulator
0x55
2
2
ANL A,@Ri
AND indirect RAM to accumulator
0x56 - 0x57
1
2
ANL A,#data
AND immediate data to accumulator
0x54
2
2
ANL direct,A
AND accumulator to direct byte
0x52
2
3
ANL direct,#data
AND immediate data to direct byte
0x53
3
4
ORL A,Rn
OR register to accumulator
0x48 - 0x4F
1
1
ORL A,direct
OR direct byte to accumulator
0x45
2
2
ORL A,@Ri
OR indirect RAM to accumulator
0x46 - 0x47
1
2
Arithmetic Operations
Logical Operations
ORL A,#data
OR immediate data to accumulator
0x44
2
2
ORL direct,A
OR accumulator to direct byte
0x42
2
3
ORL direct,#data
OR immediate data to direct byte
0x43
3
4
XRL A,Rn
Exclusive OR register to accumulator
0x68 - 0x6F
1
1
XRL A,direct
Exclusive OR direct byte to accumulator
0x65
2
2
XRL A,@Ri
Exclusive OR indirect RAM to accumulator
0x66 - 0x67
1
2
XRL A,#data
Exclusive OR immediate data to accumulator
0x64
2
2
XRL direct,A
Exclusive OR accumulator to direct byte
0x62
2
3
SWRS033F
Page 57 of 242
CC1110Fx / CC1111Fx
Mnemonic
Description
Hex Opcode
Bytes
Cycles
XRL direct,#data
Exclusive OR immediate data to direct byte
0x63
3
4
CLR A
Clear accumulator
0xE4
1
1
CPL A
Complement accumulator
0xF4
1
1
RL A
Rotate accumulator left
0x23
1
1
RLC A
Rotate accumulator left through carry
0x33
1
1
RR A
Rotate accumulator right
0x03
1
1
RRC A
Rotate accumulator right through carry
0x13
1
1
SWAP A
Swap nibbles within the accumulator
0xC4
1
1
MOV A,Rn
Move register to accumulator
0xE8 - 0xEF
1
1
MOV A,direct
Move direct byte to accumulator
0xE5
2
2
MOV A,@Ri
Move indirect RAM to accumulator
0xE6 - 0xE7
1
2
MOV A,#data
Move immediate data to accumulator
0x74
2
2
MOV Rn,A
Move accumulator to register
0xF8 - 0xFF
1
2
MOV Rn,direct
Move direct byte to register
0xA8 - 0xAF
2
4
MOV Rn,#data
Move immediate data to register
0x78 - 0x7F
2
2
MOV direct,A
Move accumulator to direct byte
0xF5
2
3
MOV direct,Rn
Move register to direct byte
0x88 - 0x8F
2
3
MOV direct1,direct2
Move direct byte to direct byte
0x85
3
4
MOV direct,@Ri
Move indirect RAM to direct byte
0x86 - 0x87
2
4
MOV direct,#data
Move immediate data to direct byte
0x75
3
3
MOV @Ri,A
Move accumulator to indirect RAM
0xF6 - 0xF7
1
3
MOV @Ri,direct
Move direct byte to indirect RAM
0xA6 - 0xA7
2
5
MOV @Ri,#data
Move immediate data to indirect RAM
0x76 - 0x77
2
3
MOV DPTR,#data16
Load data pointer with a 16-bit constant
0x90
3
3
MOVC A,@A+DPTR
Move code byte relative to DPTR to accumulator
0x93
1
3
MOVC A,@A+PC
Move code byte relative to PC to accumulator
0x83
1
3
MOVX A,@Ri
Move external RAM (8-bit address) to A
0xE2 - 0xE3
1
3 - 10
MOVX A,@DPTR
Move external RAM (16-bit address) to A
0xE0
1
3 - 10
MOVX @Ri,A
Move A to external RAM (8-bit address)
0xF2 - 0xF3
1
4 - 11
MOVX @DPTR,A
Move A to external RAM (16-bit address)
0xF0
1
4 - 11
PUSH direct
Push direct byte onto stack
0xC0
2
4
POP direct
Pop direct byte from stack
0xD0
2
3
XCH A,Rn
Exchange register with accumulator
0xC8 - 0xCF
1
2
XCH A,direct
Exchange direct byte with accumulator
0xC5
2
3
XCH A,@Ri
Exchange indirect RAM with accumulator
0xC6 - 0xC7
1
3
XCHD A,@Ri
Exchange low-order nibble indirect. RAM with A
0xD6 - 0xD7
1
3
Data Transfers
SWRS033F
Page 58 of 242
CC1110Fx / CC1111Fx
Mnemonic
Description
Hex Opcode
Bytes
Cycles
ACALL addr11
Absolute subroutine call
xxx11
2
6
LCALL addr16
Long subroutine call
0x12
3
6
RET
Return from subroutine
0x22
1
4
RETI
Return from interrupt
0x32
1
4
2
3
Program Branching
8
8
AJMP addr11
Absolute jump
xxx01
LJMP addr16
Long jump
0x02
3
4
SJMP rel
Short jump (relative address)
0x80
2
3
JMP @A+DPTR
Jump indirect relative to the DPTR
0x73
1
2
JZ rel
Jump if accumulator is zero
0x60
2
3
JNZ rel
Jump if accumulator is not zero
0x70
2
3
JC rel
Jump if carry flag is set to 1
0x40
2
3
JNC
Jump if carry flag is 0
0x50
2
3
JB bit,rel
Jump if direct bit is set to 1
0x20
3
4
JNB bit,rel
Jump if direct bit is 0
0x30
3
4
JBC bit,direct rel
Jump if direct bit is set to 1 and clear the bit to 0
0x10
3
4
CJNE A,direct rel
Compare direct byte to A and jump if not equal
0xB5
3
4
CJNE A,#data rel
Compare immediate to A and jump if not equal
0xB4
3
4
CJNE Rn,#data rel
Compare immediate to reg. and jump if not equal
0xB8 - 0xBF
3
4
CJNE @Ri,#data rel
Compare immediate to indirect and jump if not equal
0xB6 -0xB7
3
4
DJNZ Rn,rel
Decrement register and jump if not zero
0xD8 - 0xDF
2
3
DJNZ direct,rel
Decrement direct byte and jump if not zero
0xD5
3
4
NOP
No operation
0x00
1
1
Boolean Variable Operations
CLR C
Clear carry flag
0xC3
1
1
CLR bit
Clear direct bit
0xC2
2
3
SETB C
Set carry flag to 1
0xD3
1
1
SETB bit
Set direct bit to 1
0xD2
2
3
CPL C
Complement carry flag
0xB3
1
1
CPL bit
Complement direct bit
0xB2
2
3
ANL C,bit
AND direct bit to carry flag
0x82
2
2
ANL C,/bit
AND complement of direct bit to carry
0xB0
2
2
ORL C,bit
OR direct bit to carry flag
0x72
2
2
ORL C,/bit
OR complement of direct bit to carry
0xA0
2
2
MOV C,bit
Move direct bit to carry flag
0xA2
2
2
MOV bit,C
Move carry flag to direct bit
0x92
2
3
Set SW breakpoint in debug mode
0xA5
1
1
Miscellaneous
TRAP
Table 37: Instruction Set Summary
8
addr11[10:8] is mapped into bits 7:5 of the first instruction byte (i.e. the opcode). addr11[7:0] is
mapped into the second instruction byte
SWRS033F
Page 59 of 242
CC1110Fx / CC1111Fx
Instruction
CY
OV
AC
ADD
x
x
x
ADDC
x
x
x
SUBB
x
x
x
MUL
0
x
-
DIV
0
x
-
DA
x
-
-
RRC
x
-
-
RLC
x
-
-
SETB C
1
-
-
CLR C
x
-
-
CPL C
x
-
-
ANL C,bit
x
-
-
ANL C,/bit
x
-
-
ORL C,bit
x
-
-
ORL C,/bit
x
-
-
MOV C,bit
x
-
-
CJNE
x
-
-
“0” = Clear to 0, “1” = Set to 1, “x” = Set to 1/Clear to 0, “-“ = Not affected
Table 38: Instructions that Affect Flag Settings
11.5 Interrupts
The CPU has 18 interrupt sources. Each
source has its own request flag located in a
set of Interrupt Flag SFRs. Each interrupt can
be individually enabled or disabled. The
definitions of the interrupt sources and the
interrupt vectors are given in Table 39.
I2S and USART1 share interrupts. On the
CC1111Fx USB shares interrupt with Port 2
inputs. The interrupt aliases for I2S and USB
are listed in Table 40. However, in the
following sections the original interrupt names,
masks, and flags listed in Table 39 are the
ones used.
The interrupts are grouped into a set of priority
level groups with selectable priority levels.
Note that some peripherals have several
events that can generate the interrupt request
associated with that peripheral. This applies to
P0, P1, P2, DMA, Timer 1, Timer 2, Timer 3,
Timer 4, and Radio. These peripherals have
interrupt mask bits for each internal interrupt
source in the corresponding SFRs. Note that
I2S has its own interrupt enable bits even if it
has only one event per interrupt. For the
peripherals that have their own mask bits, one
or more of these bits must be set for the
associated CPU interrupt flag to be asserted.
In order to use any of the interrupts in the
CC1110Fx/CC1111Fx the following steps must be
taken:
The interrupt enable registers are described in
Section 11.5.1 and the interrupt priority
settings are described in Section 11.5.3 on
Page 68.
11.5.1
Interrupt Masking
Each interrupt can be individually enabled or
disabled by the interrupt enable bits in the
Interrupt Enable SFRs IEN0, IEN1, and IEN2.
The Interrupt Enable SFRs are described
below and summarized in Table 39.
SWRS033F
1. Clear interrupt
11.5.2)
flags
(see
Section
2. Set individual interrupt enable bit in the
peripherals SFR, if any
3. Set the corresponding individual,
interrupt enable bit in the IEN0, IEN1,
or IEN2 registers to 1
4. Enable global interrupt by setting the
IEN0.EA = 1
Page 60 of 242
CC1110Fx / CC1111Fx
5. Begin the interrupt service routine at the
corresponding vector address of that
interrupt. See Table 39 for addresses
Note: An interrupt must not be enabled
without having proper code located at the
corresponding interrupt vector address
Interrupt
Number
Description
Interrupt
Name
Interrupt
Vector
CPU Interrupt
Mask
CPU Interrupt Flag
0
RF TX done / RX ready
RFTXRX
0x03
IEN0.RFTXRXIE
TCON.RFTXRXIF9
1
ADC end of conversion
ADC
0x0B
IEN0.ADCIE
TCON.ADCIF9
2
USART0 RX complete
URX0
0x13
IEN0.URX0IE
TCON.URX0IF9
3
USART1 RX complete
URX1
0x1B
IEN0.URX1IE
TCON.URX1IF9
2
(Note: I S RX complete, see Table
40)
4
AES encryption/decryption
complete
ENC
0x23
IEN0.ENCIE
S0CON.ENCIF
5
Sleep Timer compare
ST
0x2B
IEN0.STIE
IRCON.STIF
6
Port 2 inputs
P2INT
0x33
IEN2.P2IE
IRCON2.P2IF10
(Note: Also used for USB on
CC1111Fx,, see Table 40)
7
USART0 TX complete
UTX0
0x3B
IEN2.UTX0IE
IRCON2.UTX0IF
8
DMA transfer complete
DMA
0x43
IEN1.DMAIE
IRCON.DMAIF
9
Timer 1 (16-bit)
capture/Compare/overflow
T1
0x4B
IEN1.T1IE
IRCON.T1IF9,10
10
Timer 2 (MAC Timer) overflow
T2
0x53
IEN1.T2IE
IRCON.T2IF9,10
11
Timer 3 (8-bit) compare/overflow
T3
0x5B
IEN1.T3IE
IRCON.T3IF9,
10
9, 10
12
Timer 4 (8-bit) compare/overflow
T4
0x63
IEN1.T4IE
IRCON.T4IF
13
Port 0 inputs
P0INT
0x6B
IEN1.P0IE
IRCON.P0IF10
UTX1
0x73
IEN2.UTX1IE
IRCON2.UTX1IF
(Note: P0_7 interrupt used for USB
Resume interrupt on CC1111Fx)
14
USART1 TX complete
2
(Note: I S TX complete, see Table
40)
15
Port 1 inputs
P1INT
0x7B
IEN2.P1IE
IRCON2.P1IF10
16
RF general interrupts
RF
0x83
IEN2.RFIE
S1CON.RFIF10
17
Watchdog overflow in timer mode
WDT
0x8B
IEN2.WDTIE
IRCON2.WDTIF
Table 39: Interrupts Overview
9
Cleared by HW when the CPU vectors to the ISR
10
Additional interrupt mask bits and interrupt flags found in the peripheral’s SFRs
SWRS033F
Page 61 of 242
CC1110Fx / CC1111Fx
Interrupt
Number
Description
Interrupt
Name
Interrupt
Vector
CPU Interrupt
Mask Alias
CPU Interrupt Flag
Alias
3
I S RX complete
URX1/
I2SRX
0x1Bh
IEN0.I2SRXIE
TCON.I2SRXIF11
6
USB Interrupt pending (CC1111Fx )
P2INT/
USB
0x33h
IEN2.USBIE
IRCON2.USBIF12
13
USB resume interrupt (CC1111Fx ).
P0INT
0x6B
IEN1.P0IE
IRCON.P0IF
UTX1/
I2STX
0x73h
IEN2.I2STXIE
IRCON2.I2STXIF11
2
P0_6 and P0_7 does not exist on
CC1110Fx. USB resume interrupt
configured like P0_7 interrupt on
CC1110Fx
2
14
I S TX complete
Table 40: Shared Interrupt Vectors (I2S and USB)
11
The I2S module has its own interrupt enable bits and interrupt flags (no masking)
12
Additional interrupt mask bits and interrupt flags found in the peripheral’s SFRs
IEN0 (0xA8) – Interrupt Enable 0 Register
Bit
Name
Reset
R/W
Description
7
EA
0
R/W
Enable All
6
5
4
3
2
1
0
STIE
ENCIE
URX1IE /
I2SRXIE
URX0IE
ADCIE
RFTXRXIE
0
No interrupt will be acknowledged
1
Each interrupt source is individually enabled or disabled by setting its
corresponding enable bit
0
R/W
Not used
0
R/W
Sleep Timer interrupt enable
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
0
Interrupt disabled
1
Interrupt enabled
AES encryption/decryption interrupt enable
0
Interrupt disabled
1
Interrupt enabled
USART1 RX interrupt enable / I2S RX interrupt enable
0
Interrupt disabled
1
Interrupt enabled
USART0 RX interrupt enable
0
Interrupt disabled
1
Interrupt enabled
ADC interrupt enable
0
Interrupt disabled
1
Interrupt enabled
RF TX/RX done interrupt enable
0
Interrupt disabled
1
Interrupt enabled
SWRS033F
Page 62 of 242
CC1110Fx / CC1111Fx
IEN1 (0xB8) - Interrupt Enable 1 Register
Bit
Reset
R/W
Description
7
0
R/W
Not used
6
0
R0
Not used
0
R/W
Port 0 interrupt enable
5
4
3
2
1
0
Name
P0IE
T4IE
T3IE
T2IE
T1IE
DMAIE
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
0
Interrupt disabled
1
Interrupt enabled
Timer 4 interrupt enable
0
Interrupt disabled
1
Interrupt enabled
Timer 3 interrupt enable
0
Interrupt disabled
1
Interrupt enabled
Timer 2 interrupt enable
0
Interrupt disabled
1
Interrupt enabled
Timer 1 interrupt enable
0
Interrupt disabled
1
Interrupt enabled
DMA transfer interrupt enable
0
Interrupt disabled
1
Interrupt enabled
SWRS033F
Page 63 of 242
CC1110Fx / CC1111Fx
IEN2 (0x9A) - Interrupt Enable 2 Register
Bit
Name
7:6
5
4
3
2
1
0
11.5.2
WDTIE
P1IE
UTX1IE /
I2STXIE
UTX0IE
P2IE /
USBIE
RFIE
Reset
R/W
Description
0
R/W
Not used
0
R/W
Watchdog timer interrupt enable
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
0
Interrupt disabled
1
Interrupt enabled
Port 1 interrupt enable
0
Interrupt disabled
1
Interrupt enabled
2
USART1 TX interrupt enable / I S TX interrupt enable
0
Interrupt disabled
1
Interrupt enabled
USART0 TX interrupt enable
0
Interrupt disabled
1
Interrupt enabled
Port 2 interrupt enable (Also used for USB interrupt enable on CC1111Fx)
0
Interrupt disabled
1
Interrupt enabled
RF general interrupt enable
0
Interrupt disabled
1
Interrupt enabled
Interrupt Processing
When an interrupt occurs, the CPU will vector
to the interrupt vector address shown in Table
39, if this particular interrupt has been
enabled. Once an interrupt service has begun,
it can be interrupted only by a higher priority
interrupt. The interrupt service is terminated by
a RETI (return from interrupt) instruction.
When a RETI is performed, the CPU will return
to the instruction that would have been next
when the interrupt occurred.
When the interrupt condition occurs, an
interrupt flag bit will be set in one of the CPU
interrupt flag registers and in the peripherals
interrupt flag register, if this is available. These
bits are asserted regardless of whether the
interrupt is enabled or disabled. If the interrupt
is enabled when an interrupt flag is asserted,
then on the next instruction cycle the interrupt
will be acknowledged by hardware forcing an
LCALL to the appropriate vector address.
Interrupt response will require a varying
amount of time depending on the state of the
CPU when the interrupt occurs. If the CPU is
performing an interrupt service with equal or
greater priority, the new interrupt will be
pending until it becomes the interrupt with
highest priority. In other cases, the response
time depends on the current instruction. The
fastest possible response to an interrupt is
seven instruction cycles. This includes one
machine cycle for detecting the interrupt and
six cycles to perform the LCALL.
Clearing interrupt flags must be done correctly
to ensure that no interrupts are lost or
processed more than once. For pulsed or
edge shaped interrupt sources one should
clear the CPU interrupt flag prior to clearing
the module interrupt flag, if available, for flags
that are not automatically cleared. For level
triggered interrupts (port interrupts) one has to
clear the module interrupt flag prior to clearing
the CPU interrupt flag. When handling
interrupts where the CPU interrupt flag is
cleared by hardware, the software should only
clear the module interrupt flag. The following
interrupts are cleared by hardware:
• RFTXRX
•
T1
• ADC
•
T2
• URX0
•
T3
• URX1/I2SRX
•
T4
One or more module flags can be cleared at
once. However the safest approach is to only
handle one interrupt source each time the
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CC1110Fx / CC1111Fx
interrupt is triggered, hence clearing only one
module flag. When any module flag is cleared
the chip will check if there are any module
interrupt flags left that are both enabled and
asserted, if so the CPU interrupt flag will be
asserted and a new interrupt triggered.
The following code example shows how only
one module flag is handled and cleared each
time the interrupt occurs:
#pragma vector = RF_VECTOR
__interrupt void rf_interrupt (void)
{
S1CON &= ~0x03;
// Clear CPU interrupt flag
if(RFIF & 0x80)
// TX underflow
{
irq_txunf();
// Handle TX underflow
RFIF &= ~0x80;
// Clear module interrupt flag
}
else if(RFIF & 0x40)
// RX overflow
{
irq_rxovf();
// Handle RX overflow
RFIF &= ~0x40;
// Clear module interrupt flag
}
// Use ”else if” to check and handle other RFIF flags
}
TCON (0x88) - CPU Interrupt Flag 1
Bit
7
Name
Reset
R/W
Description
URX1IF /
0
R/W
USART1 RX interrupt flag / I S RX interrupt flag
H0
Set to 1 when USART1 RX interrupt occurs and cleared when CPU vectors
to the interrupt service routine.
I2SRXIF
6
5
ADCIF
3
URX0IF
1
RFTXRXIF
1
Interrupt pending
Not used
0
R/W
ADC interrupt flag. Set to 1 when ADC interrupt occurs and cleared when
CPU vectors to the interrupt service routine.
0
Interrupt not pending
1
Interrupt pending
0
R/W
Not used
0
R/W
USART0 RX interrupt flag. Set to 1 when USART0 interrupt occurs and
cleared when CPU vectors to the interrupt service routine.
0
Interrupt not pending
1
Interrupt pending
1
R/W
Reserved. Must always be set to 1.
0
R/W
RF TX/RX complete interrupt flag. Set to 1 when RFTXRX interrupt occurs
and cleared when CPU vectors to the interrupt service routine.
H0
0
Interrupt not pending
R/W
H0
2
0
0
H0
4
2
1
R/W
0
Interrupt not pending
1
Interrupt pending
Reserved. Must always be set to 1.
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S0CON (0x98) - CPU Interrupt Flag 2
Bit
Name
7:2
1
0
ENCIF_1
ENCIF_0
Reset
R/W
Description
0
R/W
Not used
0
R/W
AES interrupt. ENCIF has two interrupt flags, ENCIF_1 and ENCIF_0.
Interrupt source sets both ENCIF_1 and ENCIF_0, but setting one of these
flags in SW will generate an interrupt request. Both flags are set when the
AES co-processor requests the interrupt.
0
R/W
0
Interrupt not pending
1
Interrupt pending
AES interrupt. ENCIF has two interrupt flags, ENCIF_1 and ENCIF_0.
Interrupt source sets both ENCIF_1 and ENCIF_0, but setting one of these
flags in SW will generate an interrupt request. Both flags are set when the
AES co-processor requests the interrupt.
0
Interrupt not pending
1
Interrupt pending
S1CON (0x9B) - CPU Interrupt Flag 3
Bit
Name
7:6
1
0
RFIF_1
RFIF_0
Reset
R/W
Description
0
R/W
Not used
0
R/W
RF general interrupt. RFIF has two interrupt flags, RFIF_1 and RFIF_0.
Interrupt source sets both RFIF_1 and RFIF_0, but setting one of these
flags in SW will generate an interrupt request. Both flags are set when the
radio requests the interrupt.
0
R/W
0
Interrupt not pending
1
Interrupt pending
RF general interrupt. RFIF has two interrupt flags, RFIF_1 and RFIF_0.
Interrupt source sets both RFIF_1 and RFIF_0, but setting one of these
flags in SW will generate an interrupt request. Both flags are set when the
radio requests the interrupt.
0
Interrupt not pending
1
Interrupt pending
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CC1110Fx / CC1111Fx
IRCON (0xC0) - CPU Interrupt Flag 4
Bit
Name
Reset
R/W
Description
7
STIF
0
R/W
Sleep Timer interrupt flag
6
5
4
P0IF
T4IF
T3IF
T2IF
T1IF
0
R/W
Port 0 interrupt flag
0
R/W
0
R/W
0
R/W
0
R/W
H0
0
DMAIF
Interrupt pending
Reserved. Must always be set to 0. Failure to do so will lead to ISR toggling
(interrupt routine sustained)
H0
1
1
R/W
H0
2
Interrupt not pending
0
H0
3
0
0
R/W
0
Interrupt not pending
1
Interrupt pending
Timer 4 interrupt flag. Set to 1 when Timer 4 interrupt occurs and cleared
when CPU vectors to the interrupt service routine.
0
Interrupt not pending
1
Interrupt pending
Timer 3 interrupt flag. Set to 1 when Timer 3 interrupt occurs and cleared
when CPU vectors to the interrupt service routine.
0
Interrupt not pending
1
Interrupt pending
Timer 2 interrupt flag. Set to 1 when Timer 2 interrupt occurs and cleared
when CPU vectors to the interrupt service routine.
0
Interrupt not pending
1
Interrupt pending
Timer 1 interrupt flag. Set to 1 when Timer 1 interrupt occurs and cleared
when CPU vectors to the interrupt service routine.
0
Interrupt not pending
1
Interrupt pending
DMA complete interrupt flag.
0
Interrupt not pending
1
Interrupt pending
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CC1110Fx / CC1111Fx
IRCON2 (0xE8) - CPU Interrupt Flag 5
Bit
Name
7:5
4
3
2
1
0
11.5.3
WDTIF
P1IF
UTX1IF /
I2STXIF
UTX0IF
P2IF /
USBIF
Reset
R/W
Description
0
R/W
Not used
0
R/W
Watchdog timer interrupt flag
0
0
0
0
R/W
R/W
R/W
R/W
0
Interrupt not pending
1
Interrupt pending
Port 1 interrupt flag.
0
Interrupt not pending
1
Interrupt pending
2
USART1 TX interrupt flag / I S TX interrupt flag
0
Interrupt not pending
1
Interrupt pending
USART0 TX interrupt flag
0
Interrupt not pending
1
Interrupt pending
Port2 interrupt flag / USB interrupt flag
0
Interrupt not pending
1
Interrupt pending
Interrupt Priority
The interrupts are grouped into six interrupt
priority groups and the priority for each group
is set by the registers IP0 and IP1. The
interrupt priority groups with assigned interrupt
sources are shown in Table 42. Each group is
assigned one of four priority levels, and by
default all six interrupt priority groups are
assign the lowest priority. In order to assign a
higher priority to an interrupt, i.e. to its interrupt
group, the corresponding bits in IP0 and IP1
must be set as shown in Table 41 on Page 69.
While an interrupt service request is in
progress, it cannot be interrupted by a lower or
same level interrupt. In the case when
interrupt requests of the same priority level are
received simultaneously, the polling sequence
shown in Table 43 is used to resolve the
priority of each requests.
IP1 (0xB9) - Interrupt Priority 1
Bit
Name
7:6
Reset
R/W
Description
0
R/W
Not used
5
IP1_IPG5
0
R/W
Interrupt group 5, priority control bit 1, refer to Table 41
4
IP1_IPG4
0
R/W
Interrupt group 4, priority control bit 1, refer to Table 41
3
IP1_IPG3
0
R/W
Interrupt group 3, priority control bit 1, refer to Table 41
2
IP1_IPG2
0
R/W
Interrupt group 2, priority control bit 1, refer to Table 41
1
IP1_IPG1
0
R/W
Interrupt group 1, priority control bit 1, refer to Table 41
0
IP1_IPG0
0
R/W
Interrupt group 0, priority control bit 1, refer to Table 41
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CC1110Fx / CC1111Fx
IP0 (0xA9) - Interrupt Priority 0
Bit
Name
7:6
Reset
R/W
Description
0
R/W
Not used
5
IP0_IPG5
0
R/W
Interrupt group 5, priority control bit 0, refer to Table 41
4
IP0_IPG4
0
R/W
Interrupt group 4, priority control bit 0, refer to Table 41
3
IP0_IPG3
0
R/W
Interrupt group 3, priority control bit 0, refer to Table 41
2
IP0_IPG2
0
R/W
Interrupt group 2, priority control bit 0, refer to Table 41
1
IP0_IPG1
0
R/W
Interrupt group 1, priority control bit 0, refer to Table 41
0
IP0_IPG0
0
R/W
Interrupt group 0, priority control bit 0, refer to Table 41
IP1_x
IP0_x
Priority Level
0
0
0 (lowest)
0
1
1
1
0
2
1
1
3 (highest)
Table 41: Priority Level Setting
Group
Interrupts
IPG0
RFTXRX
RF
DMA
IPG1
ADC
T1
P2INT / USB
IPG2
URX0
T2
UTX0
IPG3
URX1 / I2SRX
T3
UTX1 / I2STX
IPG4
ENC
T4
P1INT
IPG5
ST
P0INT (USB Resume)
WDT
Table 42: Interrupt Priority Groups
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CC1110Fx / CC1111Fx
Interrupt Number
Interrupt Name
0
RFTXRX
16
RF
8
DMA
1
ADC
9
T1
2
URX0
10
T2
3
URX1 / I2SRX
11
T3
4
ENC
12
T4
5
ST
13
P0INT / (USB Resume)
6
P2INT / USB
7
UTX0
14
URX1 / I2STX
15
P1INT
17
WDT
Polling sequence
Table 43: Interrupt Polling Sequence
12
Debug Interface
The CC1110Fx/CC1111Fx includes an on-chip
debug module which communicates over a
two-wire interface. The debug interface allows
programming of the on-chip flash. It also
provides access to memory and registers
contents, and debug features such as
breakpoints, single-stepping, and register
modification.
The debug interface uses the I/O pins P2_1 as
Debug Data and P2_2 as Debug Clock during
Debug mode. These I/O pins can be used as
general purpose I/O only while the device is
not in Debug mode. Thus the debug interface
does not interfere with any peripheral I/O pins.
12.1 Debug Mode
Debug mode is entered by forcing two rising
edge transitions on pin P2_2 (Debug Clock)
while the RESET_N input is held low.
Note: Debugging of PM2 and PM3 is not
supported. Also note that CLKCON.CLKSPD
must be 000 or 001 when using the debug
interface
While in Debug mode pin P2_1 is the Debug
Data bi-directional pin and P2_2 is the Debug
Clock input pin.
12.2 Debug Communication
The debug interface uses an SPI-like two-wire
interface consisting of the P2_1 (Debug Data)
and P2_2 (Debug Clock) pins. Data is driven
on the bi-directional Debug Data pin at the
positive edge of Debug Clock and data is
sampled on the negative edge of this clock.
Debug commands are sent by an external host
and consist of 1 to 4 output bytes (including
command byte) from the host and an optional
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CC1110Fx / CC1111Fx
input byte read by the host. Command and
data is transferred with MSB first. Figure 17
shows a timing diagram of data on the debug
interface.
Figure 17: Debug Interface Timing Diagram
12.3 Debug Lock Bit
For software and/or access protection, a set of
lock bits can be written. This information is
contained in the Flash Information Page (see
Section 11.2.3.2), at location 0x000. The Flash
Information Page can only be accessed
through the debug interface. There are three
kinds of lock protect bits as described in this
section.
The lock size bits LSIZE[2:0] are used to
define which section of the flash memory
should be write protected, if any. The size of
the write protected area can be set to 0 (no
pages), 1, 2, 4, 8, 16, 24, or 32 KB (all pages),
starting from top of flash memory and defining
a section below this. Note that for CC1110F8,
CC1111F8, CC1110F16, and CC1111F16, the only
supported value for LSIZE[2:0]is 0 and 7
(all or no pages respectively).
The second type of lock protect bits is
BBLOCK, which is used to lock the boot sector
page (page 0 ranging from address 0x0000 to
0x03FF). When BBLOCK is set to 0, the boot
sector page is locked.
The third type of lock protect bit is DBGLOCK,
which is used to disable hardware debug
support through the Debug Interface. When
DBGLOCK is set to 0, almost all debug
commands are disabled.
When the Debug Lock bit, DBGLOCK, is set to
0 (see Table 44) all debug commands except
CHIP_ERASE,
READ_STATUS
and
GET_CHIP_ID are disabled and will not
function. The status of the Debug Lock bit can
be read using the READ_STATUS command
(see Section 12.4.2).
Note that after the Debug Lock bit has
changed due to a Flash Information Page write
or a flash mass erase, a HALT, RESUME,
DEBUG_INSTR,
STEP_INSTR,
or
STEP_REPLACE command must be executed
so that the Debug Lock value returned by
READ_STATUS shows the updated Debug
Lock value. For example a dummy NOP
DEBUG_INSTR command could be executed.
The Debug Lock bit will also be updated after
a device reset so an alternative is to reset the
chip and reenter debug mode.
The CHIP_ERASE command will set all bits in
flash memory to 1. This means that after
issuing a CHIP_ERASE command the boot
sector will be writable, no pages will be writeprotected, and all debug commands are
enabled.
The lock protect bits are written as a normal
flash write to FWDATA (see Section 13.3.2), but
the Debug Interface needs to select the Flash
Information Page first instead of the Flash
Main Page which is the default setting. The
Information Page is selected through the
Debug Configuration which is written through
the Debug Interface only. Refer to Section
12.4.1 and Table 46 for details on how the
Flash Information Page is selected using the
Debug Interface.
Table 44 defines the byte containing the flash
lock protection bits. Note that this is not an
SFR, but instead the byte stored at location
0x000 in Flash Information Page.
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CC1110Fx / CC1111Fx
Bit
Name
Description
7:5
4
3:1
0
Reserved, write as 0
BBLOCK
Boot Block Lock
LSIZE[2:0]
0
Page 0 is write protected
1
Page 0 is writeable, unless LSIZE is 000
Lock Size. Sets the size of the upper flash area which is write-protected. Byte
sizes are listed below
DBGLOCK
000
32 KB (all pages)
001
24 KB
CC1110F32 and CC1111F32 only
010
16 KB
CC1110F32 and CC1111F32 only
011
8 KB
CC1110F32 and CC1111F32 only
100
4 KB
CC1110F32 and CC1111F32 only
101
2 KB
CC1110F32 and CC1111F32 only
110
1 KB
CC1110F32 and CC1111F32 only
111
0 bytes (no pages)
Debug lock bit
0
Disable debug commands
1
Enable debug commands
Table 44: Flash Lock Protection Bits Definition
12.4 Debug Commands
The debug commands are shown in Table 45.
Some of the debug commands are described
in further detail in the following sections
12.4.1
Debug Configuration
The
commands
WR_CONFIG
and
RD_CONFIG are used to access the debug
configuration data byte. The format and
description of this configuration data is shown
in Table 46
12.4.2
Debug Status
A debug status byte is read using the
READ_STATUS command. The format and
description of this debug status is shown in
Table 47.
CC1110Fx/CC1111Fx supports up to four hardware
breakpoints. When a hardware breakpoint is
enabled it will compare the CPU address bus
with the breakpoint. When a match occurs, the
CPU is halted.
When issuing the SET_HW_BRKPNT debug
command, the external host must supply three
data bytes that define the hardware
breakpoint. The hardware breakpoint itself
consists of 18 bits while three bits are used for
control purposes. The format of the three data
bytes for the SET_HW_BRKPNT command is
as follows.
The first data byte consists of the following:
Bit
Description
The READ_STATUS command is used e.g.
for polling the status of flash chip erase after a
CHIP_ERASE command or oscillator stable
status required for debug commands HALT,
RESUME, DEBUG_INSTR, STEP_REPLACE,
and STEP_INSTR.
7:5
Unused
4:3
Breakpoint number; 0 - 3
2
Breakpoint enable
12.4.3
1:0
Hardware Breakpoints
The debug command SET_HW_BRKPNT is
used to set a hardware breakpoint. The
0
Disable
1
Enable
Reserved. Must be 00.
The second data byte consists of bits 15 - 8 of
the hardware breakpoint while the third data
byte consists of bits 7 - 0 of the hardware
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CC1110Fx / CC1111Fx
breakpoint. This means that the second and
third data byte sets the CPU CODE address
where the CPU is halted.
12.4.4
Flash Programming
Programming of the on-chip flash is performed
via the debug interface. The external host
must initially send instructions using the
DEBUG_INSTR debug command to perform
the flash programming with the Flash
Controller as described in Section 13.3.
Command
Instruction Code
Description
CHIP_ERASE
0001 0100
Perform flash chip erase (mass erase). The debug interface will be enabled
and no parts of flash will be write-protected after issuing this command. Do
not use any other commands than READ_STATUS until mass erase has
completed. Return 1 status byte to host
WR_CONFIG
0001 1101
Write configuration data. Return 1 status byte to host. Refer to Table 46 for
details.
RD_CONFIG
0010 0100
Read configuration data. Return value set by WR_CONFIG command
GET_PC
0010 1000
Return value of 16-bit program counter
READ_STATUS
0011 0100
Read status byte. Refer to Table 47
SET_HW_BRKPNT
0011 1011
Set hardware breakpoint
HALT
0100 0100
Halt CPU operation. Return 1 status byte to host
RESUME
0100 1100
Resume CPU operation. To run this command, the CPU must have been
halted. Return 1 status byte to host
DEBUG_INSTR
0101 01yy
Run debug instruction. The supplied instruction will be executed by the CPU
without incrementing the program counter. To run this command, the CPU
must have been halted. Return 1 status byte to host.
yy: Number of bytes in the CPU instruction (see Table 37). Valid values are
01, 10, and 11
STEP_INSTR
0101 1100
Step CPU instruction. The CPU will execute the next instruction from
program memory and increment the program counter after execution. To run
this command, the CPU must have been halted. Return 1 status byte to host
STEP_REPLACE
0110 01 yy
Step and replace CPU instruction. The supplied instruction will be executed
by the CPU instead of the next instruction in program memory. The program
counter will be incremented after execution. To run this command, the CPU
must have been halted. Return 1 status byte to host.
yy: Number of bytes in the CPU instruction (see Table 37). Valid values are
01, 10, and 11
GET_CHIP_ID
0110 1000
Return value of 16-bit chip ID (PARTNUM:VERSION).
Table 45: Debug Commands
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CC1110Fx / CC1111Fx
Bit
Name
Description
7:4
3
2
1
0
Not used. Must be set to 0000
TIMERS_OFF
Disable timer operation (Timer 1/2/3/4). This overrides the
TIMER_SUSPEND bit and its function.
DMA_PAUSE
0
Do not disable timers
1
Disable timers
DMA pause
TIMER_SUSPEND
0
Enable DMA transfers
1
Pause all DMA transfers
Suspend timers (Timer 1/2/3/4). Timer operation is suspended for
debug instructions and if a step instruction is a branch. If not
suspended, these instructions would result an extra timer count
during the clock cycle in which the branch is executed
SEL_FLASH_INFO_PAGE
0
Do not suspend timers
1
Suspend timers
Select Flash Information Page in order to write flash lock bits (1
KB lowest part of flash)
0
Select flash Main Page
1
Select Flash Information Page
Table 46: Debug Configuration
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CC1110Fx / CC1111Fx
Bit
Name
Description
7
CHIP_ERASE_DONE
Flash chip erase done
6
5
4
3
2
1
0
PCON_IDLE
CPU_HALTED
POWER_MODE_0
HALT_STATUS
DEBUG_LOCKED
OSCILLATOR_STABLE
STACK_OVERFLOW
0
Chip erase in progress
1
Chip erase done
PCON idle
0
CPU is running
1
CPU is idle (clock gated)
CPU halted
0
CPU running
1
CPU halted
Power Mode 0
0
Power Mode 1 - 3 selected
1
Power Mode 0 selected (active mode if the CPU is running)
Halt status. Returns cause of last CPU halt
0
CPU was halted by HALT debug command
1
CPU was halted by software or hardware breakpoint
Debug locked. Returns value of DBGLOCK bit
0
Debug interface is not locked
1
Debug interface is locked
Oscillators stable. This bit represents the status of the SLEEP.XSOC_STB
and SLEEP.HFRC_STB register bits.
0
Oscillators not stable
1
Oscillators stable
Stack overflow. This bit indicates when the CPU writes to DATA memory
space at address 0xFF, which is possibly a stack overflow
0
No stack overflow
1
Stack overflow
Table 47: Debug Status
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CC1110Fx / CC1111Fx
13
In
Peripherals
the
following
sub-sections,
each
CC1110Fx/CC1111Fx peripheral is described in
detail.
13.1 Power Management and Clocks
This section describes the Power Management
Controller. The Power Management Controller
controls the use of active mode, power modes,
and clock control.
13.1.1
(leakage) power consumption and also by
using clock gating and turning off oscillators to
reduce dynamic power consumption.
The CC1110Fx/CC1111Fx has one active mode
and four power modes, called PM0, PM1, PM2
and PM3, where PM3 has the lowest power
consumption. Please note the minimum
requirement on high speed crystal oscillator
power down time in all modes of operation for
CC1110Fx, see Table 11.
The different
operating modes are shown in Table 48.
Power Management Introduction
The CC1110Fx/CC1111Fx uses different operating
modes to allow low-power operation. Ultra-lowpower operation is obtained by turning off
power supply to modules to avoid static
Operating Mode
High-speed Oscillator
Low-speed Oscillator
Configuration
A
None
A
None
B
High speed XOSC
B
Low power RCOSC
C
HS RCOSC
C
32.768 kHz XOSC
Digital Voltage
Regulator
CPU
Active
B and / or C
B or C
On
Running
PM0
B and / or C
B or C
On
Idle
PM1
A
B or C
On
Idle
PM2
A
B or C
Off
Idle
PM3
A
A
Off
Idle
Table 48: Operating Modes
Active mode: The full functional mode. The
voltage regulator to the digital core is on and
either the high speed RC oscillator or the high
speed crystal oscillator or both are running.
Either the Low power RC oscillator or the
32.768 kHz crystal oscillator is running.
the 32.768 kHz crystal oscillator is running.
The system will go to active mode on reset or
an external interrupt or when the Sleep Timer
expires. The CC1111Fx will lose all USB state
information when PM2 is entered. Thus, PM2
should not be used with USB.
PM0: Same as active mode, but the CPU is
idle, meaning that no code is being executed.
PM3: The voltage regulator to the digital core
is turned off. None of the oscillators are
running. The system will go to active mode on
reset or an external interrupt. The CC1111Fx will
lose all USB state information when PM3 is
entered. Thus, PM3 should not be used with
USB.
PM1: The voltage regulator to the digital part is
on. Neither the high speed crystal oscillator nor
the high speed RC oscillator is running. Either
the low power RC oscillator or the 32.768 kHz
crystal oscillator is running. The system will go
to active mode on reset or an external interrupt
or when the Sleep Timer expires.
PM2: The voltage regulator to the digital core
is turned off. Neither the high speed crystal
oscillator nor the high speed RC oscillator is
running. Either the low power RC oscillator or
When an external interrupt occurs in PM1,
PM2, or PM3, or a Sleep Timer interrupt occur
in PM1 and PM2, active mode will be entered
and the code will start executing from where it
entered PM1/2/(3). Any enabled interrupt will
take the device from PM0 to active mode, and
also in this case the code will start executing
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CC1110Fx / CC1111Fx
from where it entered PM0. A reset, however,
will take the chip from any of the four power
modes to active mode, but the code will start
executing from the start of the program.
13.1.2
Active Mode
This is the full functional mode of operation
where the CPU, peripherals, and RF
transceiver are active. The voltage regulator to
the digital core is on and either the high speed
RC oscillator or the high speed crystal
oscillator or both are running together with
either the Low power RC oscillator or the
32.768 kHz crystal oscillator.
13.1.2.2
PM0
If the PCON.IDLE bit is set to 1 while in active
mode, the CPU will be idle (clock gated) until
any interrupt occur. All other peripherals will
function as normal while the CPU is halted.
13.1.2.3
PM1
In PM1, the high speed oscillators (high speed
XOSC and HS RCOSC) are powered down
thereby halting the CPU and peripherals. The
digital voltage regulator, the power-on reset,
external interrupts, the low power RC oscillator
or the 32.768 kHz crystal oscillator and Sleep
Timer peripherals are active. I/O pins retain the
I/O mode and output value set before entering
PM1. When PM1 is entered, a power down
sequence is run.
PM1 is used when the expected time until a
wakeup event is relatively short since PM1
uses a fast power down/up sequence.
13.1.2.4
13.1.2.5
PM3
In PM3 the internal voltage regulator and all
oscillators are turned off.
Active Mode and Power Modes
The different operating modes are described in
detail in the five following sections.
13.1.2.1
Section 13.8.1 for minimum sleep time when
using the Sleep Timer.
This power mode is used to achieve the
operating mode with the lowest power
consumption. In PM3 all internal circuits that
are powered from internal voltage regulators
are turned off.
Reset (POR, or external) and external I/O port
interrupts are the only functions that are
operating in this mode. I/O pins retain the I/O
mode and output value set before entering
PM3. A reset or external interrupt condition will
wake the device and make it enter active
mode. The content of RAM and registers is
preserved in this mode. PM3 uses the same
power down/up sequence as PM2.
PM3 is used to achieve ultra low power
consumption when waiting for an external
event.
When entering active mode from PM1, PM2, or
PM3, the high-speed oscillators, which where
running when entering PM{1 - 3}, are started. If
the high speed crystal oscillator is selected as
source for the system clock (CLKCON.OSC=0),
the system clock will use the HS RCOSC as
clock source until the high speed crystal
oscillator is stable (SLEEP.XOSC_STB=1).
13.1.3
Power Management Control
The required power mode is selected by the
SLEEP.MODE setting. Setting the IDLE bit in
the PCON SFR after setting the MODE bits,
makes the CC1111Fx/CC1111Fx enter the selected
power mode. The following procedure must be
followed to be able to safely put the device into
one of the power modes PM{1 - 3}:
PM2
// Pseudo Code
PM2 has the second lowest power
consumption. In PM2, the power-on reset,
external interrupts, the low power RC oscillator
or the 32.768 kHz crystal oscillator and Sleep
Timer peripherals are active. I/O pins retain the
I/O mode and output value set before entering
PM2. The content of RAM and most registers
is preserved in this mode (see Table 31, Table
32, and Table 33). All other internal circuits are
powered down. When PM2 is entered, a power
down sequence is run.
PM2 is typically entered when using the Sleep
Timer as the wakeup event. Please see
SLEEP.MODE = PM{1-3}
NOP();
NOP();
NOP();
If (SLEEP_MODE != 0)
PCON.IDLE = 1;
An interrupt from port pins or Sleep Timer (not
PM3), or a power-on reset will wake the device
and bring it into active mode by resetting the
MODE bits and clear the IDLE bit. Since an
interrupt can occur before the device has
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CC1110Fx / CC1111Fx
actually entered PM{1 - 3}, it is necessary to
clear the MODE bits before returning from all
ISRs associated with interrupts that can be
used to wake the device from PM{1 - 3}. It
should be noted that all port interrupts and
Sleep Timer interrupt are blocked when
SLEEP.MODE is different from 00, thus the time
between
setting
SLEEP.MODE≠00
and
asserting PCON.IDLE should be as short as
possible. The SLEEP.MODE will be cleared to
00 by HW when power mode is entered, thus
interrupts are enabled during power modes. All
interrupts not to be used to wake up from PM
modes must be disabled before setting
SLEEP.MODE≠00.
It should be noted that after enabling the HS
XOSC (CLKCON.OSC=0) one has to ensure
that
the
HS
XOSC
is
(SLEEP.XOSC_STB=1)
before
PM{1 - 3}.
stable
entering
If the low power RCOSC is enabled
(CLKCON.OSC32K=1) the HS XOSC should
not be enabled unless the time between
succeeding PM{1 - 3} modes is larger than
startup time for the HS XOSC, see Table 11
and Table 12.
13.1.4
Power Management Registers
This section describes the Power Management
registers. All register bits retain their previous
values when entering PM2 or PM3 unless
otherwise stated.
PCON (0x87) - Power Mode Control
Bit
Reset
R/W
Description
7:2
0
R/W
Not used
1
0
R0/W1
Reserved. Must be set to 0. Failure to do so will stop CPU from operating.
R0/W1
Power mode control. Writing a 1 to this bit forces CC1110Fx/CC1111Fx to enter
the power mode set by SLEEP.MODE. This bit is always read as 0.
0
Name
IDLE
0
H0
All interrupt requests will clear this bit and CC1110Fx/CC1111Fx will reenter active
mode.
Note: see Section 13.1.3 for details on how this bit should be used.
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CC1110Fx / CC1111Fx
SLEEP (0xBE) - Sleep Mode Control
Bit
Name
Reset
R/W
Description
7
USB_EN
0
R/W
USB Enable (CC1111Fx). This bit is unused for CC1110Fx
0
Disable (Setting this bit to 0 will reset the USB controller)
1
Enable
This bit will be 0 when returning from PM2 and PM3
6
5
4:3
2
XOSC_STB
HFRC_STB
RST[1:0]
OSC_PD
0
0
XX
1
R
R
R
R/W
H0
1:0
MODE[1:0]
00
R/W
High speed crystal oscillator (fXOSC) stable status
0
Oscillator is not powered up or not yet stable
1
Oscillator is powered up and stable
High speed RC oscillator (HS RCOSC) stable status
0
Oscillator is not powered up or not yet stable
1
Oscillator is powered up and stable
Status bit indicating the cause of the last reset. If there are multiple resets, the
register will only contain the last event.
00
Power-on reset or Brown-out reset
01
External reset
10
Watchdog timer reset
High speed XOSC and HS RCOSC power down setting. The bit is cleared if
the CLKCON.OSC bit is toggled. If there is a calibration in progress and one
attempts to set this bit, the bit will be updated at the end of calibration.
0
Both oscillators powered up
1
Oscillator not selected by CLKCON.OSC bit powered down
Power mode setting
00
PM0
01
PM1
10
PM2
11
PM3
These bits will be set to 00 when entering PM{1 - 3}
Note: It is necessary to clear the MODE bits before returning from all ISRs
associated with interrupts that can be used to wake the device from PM{1 - 3}.
See Section 13.1.3 for details
13.1.5
Oscillators and Clocks
The CC1110Fx/CC1111Fx has one internal system
clock. The source for the system clock can be
either a high speed RC oscillator or a high
speed crystal oscillator. The crystal oscillator
for CC1110Fx operates at 26 - 27 MHz while the
crystal oscillator for CC1111Fx operates at 48
MHz. The 26 - 27 MHz clock is used directly
as the system clock for CC1110Fx. On CC1111Fx,
the 48 MHz clock is used by the USB
Controller only while a derived 24 MHz clock is
used as the system clock. The source for the
system clock is selected by the CLKCON.OSC
bit.
crystal oscillator. This is controlled by the
CLKCON.OSC32K bit.
The choice of oscillator allows a trade-off
between high-accuracy in the case of the
crystal oscillator and low power consumption
when the RC oscillator is used. Note that
operation of the RF transceiver requires that
the high speed crystal oscillator is used.
Note: The high speed crystal oscillator
must be stable (SLEEP.XOSC_STB=1)
before using the radio.
There is also one 32 kHz clock source that can
either be a low power RCOSC or a 32.768 kHz
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CC1110Fx / CC1111Fx
13.1.5.1
High Speed Oscillators
Two high speed oscillators are present in the
device:
• High speed crystal oscillator (26 - 27
MHz for CC1110Fx and 48 MHz for
CC1111Fx)
the HS RCOSC and the high speed crystal
oscillator as system clock source.
If CLKCON.OSC is set to 0 when entering
PM{1 - 3}, the HS RCOSC will be calibrated
once when returning to active mode.
Note: HS RCOSC calibration value gets
reset to its default value upon waking up
from PM{2 - 3}, meaning that any previous
calibration result is lost.
• High speed RC oscillator (13 - 13.5 MHz
for CC1110Fx and 12 MHz for CC1111Fx)
The high speed crystal oscillator startup time
may be too long for some applications, and the
device can therefore run on the high speed
RCOSC until the crystal oscillator is stable.
The HS RCOSC consumes less power than
the crystal oscillator, but since it is not as
accurate as the crystal oscillator it can not be
used for RF transceiver operation.
The CLKCON.OSC bit selects the source of the
system clock (high speed crystal oscillator, HS
XOSC, or high speed RC oscillator, HS
RCOSC). The system clock will not change
clock source before the selected clock source
is stable (indicated by SLEEP.XOSC_STB and
SLEEP.HFRC_STB). It should be noted that
once the clock source change has been
initiated the clock source should not be
changed or updated again until the clock
source change has taken place.
The oscillator not selected as the system clock
source, will be set in power-down mode by
setting SLEEP.OSC_PD to 1 (the default state).
Please note the minimum requirement on high
speed crystal oscillator power down guard
time in all modes of operation for CC1110Fx, see
Table 11. The HS RCOSC may be turned off
when the high speed crystal oscillator has
been selected as system clock source and
vice versa. When SLEEP.OSC_PD is 0, both
oscillators are powered up and running. Be
aware that SLEEP.OSC_PD is cleared if the
CLKCON.OSC bit is toggled.
When the high speed crystal oscillator is
selected
as
system
clock
source
(CLKCON.OSC is set to 0), the HS RCOSC will
be calibrated once. If SLEEP.OSC_PD=0, the
HS RCOSC will run on the calibrated value
once the calibration is completed (see Table
15
for
initial
calibration
time).
If
SLEEP.OSC_PD=1, the HS RCOSC will be
turned off after calibration, but the calibration
value will be stored and used when the HS
RCOSC is started again. In order to calibrate
the HS RCOSC regularly (if so found
necessary based on the drift parameters listed
in Table 15) one should switch between using
13.1.5.2
System Clock Speed and Radio
Operation of the RF transceiver requires that
the high speed crystal oscillator is used. The
CLKCON.CLKSPD setting will limit the
maximum data rate, as shown in Table 49.
Note
that
when
using
FEC
(MDMCFG1.FEC_EN=1)
CLKCON.CLKSPD
must be set to 000.
Maximum Data Rate [kBaud]
CLKCON.CLKSPD
MSK
GFSK,
OOK
and ASK
2-FSK
000
500
250
500
001
500
250
500
010
500
250
500
011
500
250
500
100
400
250
400
101
200
200
200
110
100
100
100
111
50
50
50
Table 49: System Clock Speed vs. Data Rate
13.1.5.3
Low Speed Oscillators (32 kHz
clock source)
Two low speed oscillators are present in the
device:
• Low speed crystal oscillator (32.768
kHz)
• Low power RC oscillator (34.667 - 36
kHz for CC1110Fx and 32 kHz for CC1111Fx)
The low speed crystal oscillator is designed to
operate at 32.768 kHz and provide a stable
clock signal for systems requiring time
accuracy. The low power RC oscillator run at
fXOSC / 750 for CC1110Fx and fXOSC / 1500 for
CC1111Fx, when calibrated. The calibration can
only take place when the high speed crystal
oscillator is enabled and stable. The low power
RC oscillator should be used to reduce cost
and power consumption compared to the
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CC1110Fx / CC1111Fx
32.768 kHz crystal oscillator solution. The two
low speed oscillators can not be operated
simultaneously.
By default, after a reset, the low power RC
oscillator is enabled and selected as the 32
kHz clock source. The RC oscillator consumes
less power, but is less accurate than the
32.768 kHz crystal oscillator. Refer to Section
7.5 and 7.6 for characteristics of these
oscillators.
The CLKCON.OSC32K bit selects the source of
the 32 kHz clock. This bit must only be
changed while using the HS RCOSC as the
system clock source. When the high speed
crystal oscillator is selected and it is stable, i.e.
SLEEP.XOSC_STB=1, calibration of the low
power RC oscillator is continuously performed.
This calibration is only performed in active
mode and PM0. The result of the calibration is
a RC clock running at 34.667 - 36 kHz for
CC1110Fx and 32 kHz for CC1111Fx.
after the HS XOSC was reported stable
(SLEEP.XOSC_STB=1), a calibration will be
aborted if one of the following actions is
initiated by SW:
a) Power down the HS XOSC by setting
CLKCON.OSC=1 and SLEEP.OSC_PD=1
b) Entering PM{1 - 3}.
If a) or b) is initiated during the initial
calibration, the calibration will complete before
a) or b) will take place (i.e., the HS XOSC will
continue to run for up to 2 ms before it is
powered down or PM{1 - 3} is entered). If a) or
b) is initiated after the initial calibration has
completed, there will be a delay of typically
130 µs from SW initiates a) or b), until the
calibration is aborted and HS XOSC is
powered down or PM{1 - 3} is entered (see
Figure 18)
The low power RCOSC calibration takes
approximately 2 ms, and the RCOSC will be
calibrated continuously as long as the HS
XOSC is running (SLEEP.XOSC_STB=1).
Except for the initial calibration (first calibration
Note: During the initial calibration one
must only attempt to power down the HS
XOSC or enter PM{1 - 3} once.
After the initial calibration has completed
and one aborts the calibration, one must
not try to abort the calibration again within
the next 130 µs.
Figure 18: Low Power RCOSC Calibration
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CC1110Fx / CC1111Fx
CLKCON (0xC6) - Clock Control
Bit
Name
Reset
R/W
Description
7
OSC32K
1
R/W
32 kHz clock oscillator select. The HS RCOSC must be selected as system
clock source when this bit is to be changed.
0
1
32.768 kHz crystal oscillator
Low power RC oscillator (32 - 36 kHz for CC1110Fx and 32 kHz for
CC1111Fx)
Note: This bit is not retained in PM2 and PM3. After re-entry to active mode
from one of these power modes this bit will be at the reset value 1.
6
OSC
1
R/W
System clock oscillator select.
0
High speed crystal oscillator
1
High speed RC oscillator
If the selected oscillator is not already powered up when this bit is set/cleared,
it will be powered up by selecting it.
This setting will only take effect when the selected oscillator is powered up and
stable.
Note: It is not possible to change from high speed RC oscillator to high speed
crystal oscillator when SLEEP.MODE≠00.
5:3
TICKSPD[2:0]
001
R/W
Timer tick speed setting. The value of TICKSPD cannot be higher than
CLKSPD.
CLKCON.OSC=0
HS XOSC used as clock source
for system clock
CLKCON.OSC=1
Calibrated HS RCOSC used as
clock source for system clock
000
fRef
26 MHz
NA
NA
001
fRef /2
13 MHz
fRef /2
13 MHz
010
fRef /4
6.5 MHz
fRef /4
6.5 MHz
011
fRef /8
3.25 MHz
fRef /8
3.25 MHz
100
fRef /16
1.625 MHz
fRef /16
1.625 MHz
101
fRef /32
812.5 kHz
fRef /32
812.5 kHz
110
fRef /64
406.25 kHz
fRef /64
406.25 kHz
111
fRef /128
203.125 kHz
fRef /128
203.125 kHz
fRef = fxosc for CC1110Fx and fRef = fxosc/2 for CC1111Fx
Numbers above is for CC1110Fx with fxosc = 26 MHz
2:0
CLKSPD[2:0]
001
R/W
System clock speed setting. When a new CLKSPD value is written, the new
setting is read when the clock has changed.
CLKCON.OSC=0
HS XOSC used as clock source
for system clock
CLKCON.OSC=1
Calibrated HS RCOSC used as
clock source for system clock
000
fRef
26 MHz
NA
NA
001
fRef /2
13 MHz
fRef /2
13 MHz
010
fRef /4
6.5 MHz
fRef /4
6.5 MHz
011
fRef /8
3.25 MHz
fRef /8
3.25 MHz
100
fRef /16
1.625 MHz
fRef /16
1.625 MHz
101
fRef /32
812.5 kHz
fRef /32
812.5 kHz
110
fRef /64
406.25 kHz
fRef /64
406.25 kHz
111
fRef /128
203.125 kHz
fRef /128
203.125 kHz
fRef = fxosc for CC1110Fx and fRef = fxosc/2 for CC1111Fx
Numbers above is for CC1110Fx with fxosc = 26 MHz
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CC1110Fx / CC1111Fx
13.1.6
Timer Tick Generation
The power management controller generates
a tick or enable signal for the peripheral
timers, thus acting as a prescaler for the
timers. This is a global clock division for Timer
1, Timer 2, Timer 3, and Timer 4. The tick
speed is programmed from 0.203 to 26 MHz
for CC1110Fx assuming a 26 MHz crystal or
from 0.1875 to 24 MHz for CC1111Fx by setting
the CLKCON.TICKSPD register appropriately.
The XDATA memory locations 0xFDA2 0xFEFF (350 bytes) will lose all data when
PM2 or PM3 is entered. These locations will
contain undefined data when active mode is
re-entered.
The registers which retain their contents are
the CPU registers, peripheral registers and RF
registers, unless otherwise specified for a
given register bit field. Switching to power
modes PM2 and PM3 appears transparent to
software with the following exception:
Note: CLKCON.TICKSPD cannot be set
higher than CLKCON.CLKSPD.
13.1.7
• Watchdog timer 15-bit counter is reset
to 0x0000 when entering PM2 or PM3
• HS RCOSC calibration value gets reset
to its default value upon waking up from
PM2 and PM3.
Data Retention
In PM2 and PM3, power is removed from most
of the internal circuitry. However, parts of
SRAM will retain its contents. The content of
internal registers is also retained in PM2 and
PM3, with some exceptions (see Table 31,
Table 32, and Table 33).
The XDATA memory locations 0xF000 0xFFFF (4096 bytes) retain data in PM2 and
PM3. Please note the following exception:
13.1.8
I/O and Radio
I/O port pins P1_0 and P1_1 do not have
internal pull-up/pull-down resistors. These pins
should therefore be set as outputs or pulled
high/low externally to avoid leakage current.
To save power, the radio should be turned off
when it is not used.
13.2 Reset
The CC1110Fx/CC1111Fx has four reset sources.
The following events generate a reset:
• Forcing RESET_N input pin low
• A power-on reset condition
• A brown-out reset condition
• Watchdog timer reset condition
The initial conditions after a reset are as
follows:
• I/O pins are configured as inputs with
pull-up, except P1_0 and P1_1.
• CPU program counter is loaded with
0x0000 and program execution starts at
this address
• All peripheral registers are initialized to
their reset values (refer to register
descriptions)
• Watchdog timer is disabled
13.2.1
Power On Reset and Brown Out
Detector
during device power-on. Also included is a
Brown Out Detector (BOD) operating on the
regulated 1.8 V digital power supply only, The
BOD will protect the memory contents during
supply voltage variations which cause the
regulated 1.8 V power to drop below the
minimum level required by flash memory and
SRAM.
When
power
is
initially
applied
to
the
CC1110Fx/CC1111Fx the Power On Reset (POR)
and Brown Out Detector (BOD) will hold the
device in reset state until the supply voltage
reaches above the Power On Reset and
Brown Out voltages.
Figure 19 shows the POR/BOD operation with
the 1.8 V (typical) regulated supply voltage
together with the active low reset signals
BOD_RESET and POR_RESET shown in the
bottom of the figure (note that these signals
are not available but are included on the figure
for illustration purposes).
The cause of the last reset can read from the
register bits SLEEP.RST. It should be noted
that a BOD reset will be read as a POR reset.
The CC1110Fx/CC1111Fx includes a Power On
Reset (POR) providing correct initialization
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CC1110Fx / CC1111Fx
1.8V REGULATED
VOLT
UNREGULATED
BOD RESET ASSERT
POR RESET DEASSERT RISING VDD
POR RESET ASSERT FALLING VDD
0
POR OUTPUT
BOD RESET
POR RESET
X
X
X
X
X
X
Figure 19: Power-On-Reset and Brown Out Detector Operation
13.3 Flash Controller
The CC1110Fx/CC1111Fx contains 8, 16 or 32 KB
flash memory for storage of program code.
The flash memory is programmable from the
user software and through the debug interface.
See Table 27 on Page 34 for flash memory
size options.
The Flash Controller handles writing to the
embedded flash memory and erasing of the
same memory. The embedded flash memory
consists of 8, 16, or 32 pages (each page is
1024 bytes) depending on the total flash size.
The Flash
features:
Controller
has
the
following
• 16-bit word programmable
address written to the address registers
FADDRH:FADDRL.
When performing page erase operations, the
flash memory page to be erased is addressed
through the register bits FADDRH[5:1].
Note the difference in addressing the flash
memory; when accessed by the CPU to read
code or data, the flash memory is byteaddressable. When accessed by the Flash
Controller, the flash memory is wordaddressable, where a word consists of 16 bits.
The next sections describe the procedures for
flash write and flash page erase in detail.
• Page erase
13.3.2
• Lock bits for write-protection and code
security
Data is written to the flash memory by using a
program command initiated by writing a 1 to
FCTL.WRITE. Flash write operations can
program any number of words in the flash
memory, single words or block of words in
sequence starting at the address set by
FADDRH:FADDRL. A bit in a word can be
changed from 1 to 0, but not from 0 - 1 (writing
a 1 to a bit that is 0 will be ignored). The only
way to change a 0 to a 1 is by doing a page
erase or chip erase through the debug
interface, as the erased bits are set to 1.
• Flash page erase time: 20 ms
• Flash chip erase time: 200 ms
• Flash write time (2 bytes): 20 µs
• Auto power-down during low-frequency
CPU clock read access (divided clock
source, CLKCON.CLKSPD)
13.3.1
Flash Memory Organization
The flash memory is divided into 8, 16, or 32
flash pages consisting of 1 KB each. A flash
page is the smallest erasable unit in the
memory, while a 16-bit word is the smallest
writable unit that may be addressed through
the Flash Controller.
When performing write operations, the flash
memory is word-addressable using a 14-bit
Flash Write
A write operation is performed using one out of
two methods;
• Through DMA transfer
• Through CPU SFR access
The DMA transfer method is the preferred way
to write to the flash memory.
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CC1110Fx / CC1111Fx
A write operation is initiated by writing a 1 to
FCTL.WRITE. The address to start writing at is
given by FADDRH:FADDRL. During each single
write operation FCTL.SWBSY is set high.
During a write operation, the data written to the
FWDATA register is forwarded to the flash
memory. The flash memory is 16-bit wordprogrammable, meaning data is written as 16bit words. The first byte written to FWDATA is
the LSB of the 16-bit word. The actual writing
to flash memory takes place each time two
bytes have been written to FWDATA, meaning
that the number of bytes written to flash must
be a multiple of two.
0x7FFE
When a flash write operation is executed from
RAM, the CPU continues to execute code from
the next instruction after initiation of the flash
write operation (FCTL.WRITE=1).
The FCTL.SWBSY bit must be 0 before
accessing the flash after a flash write,
otherwise an access violation occurs. This
means that FCTL.SWBSY must be 0 before
program execution can continue from a
location in flash memory.
0x7FFF
PAGE 32
13.3.2.1
0x7C00
0x7C01
.
.
.
0x0BFE
0x0BFF
.
.
.
PAGE 2
.
.
.
0x0800
0x0801
.
.
.
0x03FE
0x03FF
.
.
.
0x0000
from address 0xF000 in CODE memory space
(unified) and not exceed maximum range for
the device in use (F8, F16, or F32). When using
the DMA to write to flash, the code can be
executed from within flash memory.
PAGE 0
.
.
.
0x0001
Figure 20: Flash Address (in unified memory
space)
When accessed by the Flash Controller, the
flash memory is word-addressable. Each page
in flash consists of 512 words, addressed
through
FADDRH[0]:FADDRL[7:0].
FADDRH[5:1] is used to indicate the page
number. That means that if one wants to write
to the byte in flash mapped to address
0x0BFE, FADDRH:FADDRL should be 0x05FF
(page 2, word 511).
The CPU will not be able to access the flash,
e.g. to read program code, while a flash write
operation is in progress. Therefore the
program code executing the flash write must
be executed from RAM, meaning that the
program code must reside in the area starting
DMA Flash Write
When using the DMA to write to flash, the data
to be written is stored in the XDATA memory
space (RAM or flash). A DMA channel should
be configured to have the location of the stored
data as source address and the Flash Write
Data register, FWDATA, as the destination
address. The DMA trigger event FLASH
should be selected (TRIG[4:0]=10010).
Please see Section 13.5 for more details
regarding DMA operation. Thus the Flash
Controller will trigger a DMA transfer when the
Flash Write Data register, FWDATA, is ready to
receive new data.
When the DMA channel is armed, starting a
flash write by setting FCTL.WRITE to 1 will
trigger the first DMA transfer.
Figure 21 shows an example on how a DMA
channel is configured and how a DMA transfer
is initiated to write a block of data from a
location in XDATA to flash memory.
The DMA channel should be configured to
operate in single transfer mode, the transfer
count should be equal the size of the data
block to be transferred (must be a multiple of
2), and each transfer should be a byte. Source
address should be incremented by one for
each transfer, while the destination address
should be fixed.
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CC1110Fx / CC1111Fx
Figure 21: Flash Write using DMA
When performing DMA flash write while
executing code from within flash memory, the
instruction that triggers the first DMA trigger
event FLASH (TRIG[4:0]=10010) must be
aligned on a 2-byte boundary. Figure 22 shows
an example of code that correctly aligns the
instruction for triggering DMA (Note that this
code is IAR specific). The code below is
shown for CC1110Fx, but will also work for
CC1111Fx if the include file is being replaced by
ioCC1111.h
; Write flash and generate FLASH DMA trigger
; Code is executed from flash memory
;
#include “ioCC1110.h”
MODULE flashDmaTrigger.s51
RSEG RCODE (1)
PUBLIC halFlashDmaTrigger
FUNCTION halFlashDmaTrigger, 0203H
halFlashDmaTrigger:
ORL FCTL, #0x02;
RET;
END;
Figure 22: DMA Flash Write Executed from within Flash Memory
13.3.2.2
CPU Flash Write
The CPU can also write directly to the flash
when executing program code from RAM using
unified memory space. The CPU writes data to
the Flash Write Data register, FWDATA. The
flash memory is written each time two bytes
have been written to FWDATA, if a write has
been enabled by setting FCTL.WRITE to 1.
The CPU can poll the FCTL.SWBSY status to
determine when the flash is ready for two new
bytes to be written to FWDATA.
Note that there exist a timeout period of 40 µs
for writing one flash word to FWDATA, thus
writing two bytes to the FWDATA register has
to end within 40 µs after FCTL.SWBSY went
low and also within 40 µs after a write has
been initiated by writing a 1 to FCTL.WRITE
(see Figure 24). Failure to do so will clear the
FCTL.BUSY bit. FADDRH:FADDRL will contain
the address of the location where the write
operation failed. A new write operation can be
started by setting FCTL.WRITE to 1 again and
write two bytes to FWDATA. If one wants to do
the whole write operation over again and not
just start from where it failed, one has to erase
the page, writing the start address to
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Page 86 of 242
CC1110Fx / CC1111Fx
FADDRH:FADDRL, and setting FCTL.WRITE
to 1 (see Section 1.1.1).
The steps required to start a CPU flash write
operation are shown in Figure 23. Note that
code must be run from RAM in unified memory
space.
Figure 23: CPU Flash Write Executed from RAM
Figure 24. Flash Write Timeout
13.3.3
Flash Page Erase
After a flash page erase, all bytes in the
erased page are set to 1.
The FCTL.BUSY bit can be polled to see when
the page erase has completed.
A page erase is initiated by setting
FCTL.ERASE to 1. The page addressed by
FADDRH[5:1] is erased when a page erase is
initiated. Note that if a page erase is initiated
simultaneously with a page write, i.e.
FCTL.WRITE is set to 1, the page erase will be
performed before the page write operation.
SWRS033F
Note: If flash erase operations are
performed from within flash memory and
the watchdog timer is enabled, a watchdog
timer interval must be selected that is
longer than 20 ms, the duration of the flash
page erase operation, so that the CPU will
manage to clear the watchdog timer.
Page 87 of 242
CC1110Fx / CC1111Fx
The steps required to perform a flash page
erase from within flash memory are outlined in
Figure 25.
Flash Controller has completed the operation.
The flash erase operation requires that the
instruction that starts the erase i.e. writing to
FCTL.ERASE is followed by a NOP instruction
as shown in the example code. Omitting the
NOP instruction after the flash erase operation
will lead to undefined behavior.
Note that, while executing program code from
within flash memory, when a flash erase or
write operation is initiated, program execution
will resume from the next instruction when the
; Erase page
; Assumes 26
;
CLR
C1:
MOV
JB
MOV
MOV
MOV
NOP
RET
1 in flash memory
MHz system clock is used
EA
A,FCTL
ACC.7,C1
FADDRH,#02h
FWT,#2Ah
FCTL,#01h
; Mask interrupts
; Wait until flash controller is ready
;
;
;
;
;
Setup flash address (FADDRH[5:1]=1)
Setup flash timing
Erase page
Must always execute a NOP after erase
Continues here when flash is ready
Figure 25: Flash Page Erase Performed from Flash Memory
13.3.4
Flash DMA trigger
When the DMA channel is armed and the
FLASH trigger selected TRIG[4:0]=10010,
starting a flash write by setting FCTL.WRITE
to 1 will trigger the first DMA transfer. The
following DMA transfers will be triggered by
the Flash Controller when the Flash Write
Data register, FWDATA, is ready to receive new
data.
13.3.5
Flash Write Timing
The Flash Controller contains a timing
generator, which controls the timing sequence
of flash write and erase operations. The timing
generator uses the information set in the Flash
Write Timing register, FWT.FWT[5:0], to set
the internal timing. FWT.FWT[5:0] must be
set to a value according to the currently
selected system clock frequency.
The value used for FWT.FWT[5:0] is given by
the following equation:
FWT =
21000 ⋅ F
16 ⋅ 109
where F is the system clock frequency. The
initial value held in FWT.FWT[5:0] after a
reset is 0x11, which corresponds to 13 MHz
system clock frequency (calibrated HS
RCOSC frequency for CC1110Fx when using a
26 MHz XOSC).
13.3.6
Flash Controller Registers
The Flash Controller registers are described in
this section.
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CC1110Fx / CC1111Fx
FCTL (0xAE) - Flash Control
Bit
Name
Reset
R/W
Description
7
BUSY
0
R
Indicates that write or erase is in operation when set to 1
6
SWBSY
0
R
Indicates that a flash write is in progress. This byte is set to 1 after two bytes
has been written to FWDATA.
Do not write to FWDATA register while this bit is set.
5
4
CONTRD
3:2
1
WRITE
R/W
R0
Not used
0
Continuous read enable
0
Disable. To avoid wasting power, continuous read should only be
enabled when needed
1
Enable. Reduces internal switching of read enables, but greatly
increases power consumption.
00
R0
Not used
0
R0/W
When set to 1, a program command used to write data to flash memory is
initiated.
If ERASE is set to 1at the same time as this bit is set to 1, a page erase of the
whole page addressed by FADDRH[6:1] is performed before the write.
This bit will be 0 when returning from PM2 and PM3
0
ERASE
0
R0/W
Page Erase. Erase page given by FADDRH[5:1].
This bit will be 0 when returning from PM2 and PM3
FWDATA (0xAF) - Flash Write Data
Bit
Name
Reset
R/W
Description
7:0
FWDATA[7:0]
0x00
R/W
If FCTL.WRITE is set to 1, writing two bytes in a row to this register starts the
actual writing to flash memory. FCTL.SWBSY will be 1 during the actual flash
write
FADDRH (0xAD) - Flash Address High Byte
Bit
Name
7:6
5:0
FADDRH[5:0]
Reset
R/W
Description
0
R/W
Not used
000000
R/W
Page address / High byte of flash word address
Bits 5:1 will select which page to access.
FADDRL (0xAC) - Flash Address Low Byte
Bit
Name
Reset
R/W
Description
7:0
FADDRL[7:0]
0x00
R/W
Low byte of flash address
FWT (0xAB) - Flash Write Timing
Bit
Name
7:6
5:0
FWT[5:0]
Reset
R/W
Description
0
R/W
Not used
0x11
R/W
Flash Write Timing. Controls flash timing generator.
FWT =
21000 ⋅ F , where F is the system clock frequency (see Section 13.3.5)
16 ⋅ 10 9
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CC1110Fx / CC1111Fx
13.4 I/O Ports
Note: P0_6 and P0_7 do not exist on CC1111Fx.
The CC1111Fx has 19 digital input/output pins
available and the ADC inputs A6 and A7 can
not be used. Apart from this, all information in
this section applies to both CC1111Fx and
CC1110Fx. For all registers in this section, an x
in the register name can be replaced by 0, 1,
or, 2, referring to the port number, if nothing
else is stated.
The CC1110Fx has 21 digital input/output pins
that can be configured as general purpose
digital I/O or as peripheral I/O signals
connected to the ADC, Timers, I2S, or USART
peripherals. The usage of the I/O ports is fully
configurable from user software through a set
of configuration registers.
The I/O ports have the following key features:
• 21 digital input/output pins
• General purpose I/O or peripheral I/O
• Pull-up or pull-down capability on inputs,
except on P1_0 and P1_1.
• External interrupt capability
The external interrupt capability is available on
all 21 I/O pins. Thus, external devices may
generate interrupts if required. The external
interrupt feature can also be used to wake up
from all four power modes (PM{0 - 3}).
13.4.1
General Purpose I/O
When used as general purpose I/O, the pins
are organized as three 8-bit ports, port 0, 1,
and 2, denoted P0, P1, and P2. P0 and P1 are
complete 8-bit wide ports while P2 has only
five usable bits (P2_0 to P2_4). All ports are
both bit- and byte addressable through the
SFRs P0, P1 and P2. Each port pin can
individually be set to operate as a general
purpose I/O or as a peripheral I/O.
Note: P1_0 and P1_1 have LED driving
capabilities.
To use a port as a general purpose I/O pin the
pin must first be configured. The registers
PxSEL are used to configure each pin in a port
either as a general purpose I/O pin or as a
peripheral I/O signal. All digital input/output
pins are configured as general-purpose I/O
pins by default.
By default, all general-purpose I/O pins are
configured as inputs. To change the direction
of a port pin, at any time, the registers PxDIR
are used to set each port pin to be either an
input or an output. Thus by setting the
appropriate bit within PxDIR
to 1, the
corresponding pin becomes an output.
When reading the port registers P0, P1, and
P2, the logic values on the input pins are
returned regardless of the pin configuration.
This does not apply during the execution of
read-modify-write instructions. The readmodify-write instructions are: ANL, ORL, XRL,
JBC, CPL, INC, DEC, DJNZ, and MOV, CLR,
or SETB. Operating on a port registers the
following is true: When the destination is an
individual bit in a port register P0, P1 or P2 the
value of the register, not the value on the pin,
is read, modified, and written back to the port
register.
When used as an input, the general purpose
I/O port pins can be configured to have a pullup, pull-down, or tri-state mode of operation.
By default, inputs are configured as inputs with
pull-up. To de-select the pull-up/pull-down
function on an input the appropriate bit within
the PxINP must be set to 1. The I/O port pins
P1_0 and P1_1 do not have pull-up/pull-down
capability.
In PM1, PM2, and PM3 the I/O pins retain the
I/O mode and output value (if applicable) that
was set when PM{1 – 3} was entered.
13.4.2
Unused I/O Pins
Unused I/O pins should have a defined level
and not be left floating. One way to do this is
to leave the pin unconnected and configure
the pin as a general purpose I/O input with
pull-up resistor. This is the default state of all
pins after reset except for P1_0 and P1_1
which do not have pull-up/pull-down resistors
(note that only P2_2 has pull-up during reset).
Alternatively the pin can be configured as a
general purpose I/O output. In both cases the
pin should not be connected directly to VDD or
GND in order to avoid excessive power
consumption.
13.4.3
Low I/O Supply Voltage
In applications where the digital I/O power
supply voltage VDD on pin DVDD is below 2.6
V, the register bit PICTL.PADSC should be set
to 1.
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Page 90 of 242
CC1110Fx / CC1111Fx
13.4.4
• P1IEN: P1 interrupt enables
General Purpose I/O Interrupts
General purpose I/O pins configured as inputs
can be used to generate interrupts. The
interrupts can be configured to trigger on
either a rising or falling edge of the external
signal. Each of the P0, P1 and P2 ports have
separate interrupt enable bits common for all
bits within the port located in the IENx
registers as follows:
• PICTL: P0/P2 interrupt enables and P0,
P1, and P2 edge configuration
• P0IFG: P0 interrupt status flags
• P1IFG: P1 interrupt status flags
• P2IFG: P2 interrupt status flags
Note: All port interrupts are blocked when
SLEEP.MODE≠00
• IEN1.P0IE : P0 interrupt enable
• IEN2.P1IE : P1 interrupt enable
• IEN2.P2IE : P2 interrupt enable
13.4.5
In addition to these common interrupt enables,
the bits within each port have interrupt enable
bits located in I/O port SFRs. Each bit within
P1 has an individual interrupt enable bit,
P1_xIEN, where x is 0 - 7, located in the
P1IEN register. For P0, the low-order nibble
and the high-order nibble have their individual
interrupt enables, P0IENL and P0IENH
respectively, found in the PICTL register. For
the P2_0 - P2_4 inputs there is a common
interrupt enable, P2IEN, in the PICTL
register.
General Purpose I/O DMA
When used as general purpose I/O pins, the
P0_1 and P1_3 pins are each associated with
one DMA trigger. These DMA triggers are
IOC_0 for P0_1 and IOC_1 for P1_3 as shown
in Table 51 on Page 107.
The IOC_0 DMA trigger is activated when
there
is
a
rising
edge
on
P0_1
(P0SEL.SELP0_1 and P0DIR.P0_1 must be
0) and IOC_1 is activated when there is a
falling edge on P1_3 (P1SEL.SELP1_3 and
P1DIR.P1_3 must be 0). Note that only input
transitions on pins configured as general
purpose I/O, inputs will produce a DMA trigger.
When an interrupt condition occurs on one of
the
general
purpose
I/O
pins,
the
corresponding interrupt status flag in the P0 P2 interrupt status flag registers, P0IFG ,
P1IFG, or P2IFG will be set to 1. The
interrupt status flag is set regardless of
whether the pin has its interrupt enable set.
The CPU interrupt flags located in IRCON2 for
P1 and P2, and IRCON for P0, will only be
asserted if one or more of the interrupt enable
bits found in P1IEN (P1) and PICTL (P0 and
P2) are set to 1. Note that the module interrupt
flag needs to be cleared prior to clearing the
CPU interrupt flag.
In general, setting the appropriate PxSEL bits
to 1 is required to select peripheral I/O function
on a digital I/O pin.
The SFRs used for I/O interrupts are
described in Section 11.5 on Page 60. The
registers are the following:
Note that peripheral units have two alternative
locations for their I/O pins. Please see Table
50.
13.4.6
Peripheral I/O
This section describes how the digital
input/output pins are configured as peripheral
I/Os. For each peripheral unit that can
interface with an external system through the
digital input/output pins, a description of how
peripheral I/Os are configured is given in the
following sub-sections.
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Page 91 of 242
CC1110Fx / CC1111Fx
Periphery /
P0
P1
P2
Function
ADC
713
613
5
A7
A6
A5
C
USART0 Alt. 1
SPI
1
0
A4
A3
A2
A1
A0
SS
M0
MI
7
RT
CT
TX
RX
MI
M0
C
SS
RX
TX
RT
CT
Alt. 2
USART1 Alt. 1
UART
2
6
Alt. 2
USART1 Alt. 1
SPI
3
Alt. 2
USART0 Alt. 1
UART
4
Alt. 2
TIMER1 Alt. 1
2
1
5
4
3
2
MO
MI
C
SS
TX
RX
RT
CT
MI
M0
C
SS
RX
TX
RT
CT
1
0
1
2
1
0
4
2
1
0
TIMER3 Alt. 1
1
Alt. 2
1
0
0
TIMER4 Alt. 1
Alt. 2
1
Alt. 1
0
0
Alt. 2
I2S
3
CK
WS
RX
0
TX
Alt. 2
CK
32.768 kHz
XOSC
Q2
DEBUG
WS
RX
DC
DD
TX
Q1
Table 50: Peripheral I/O Pin Mapping
13
This pin is only found on CC1110Fx ,it does not exist on CC1111Fx.
13.4.6.1
USART0
The SFR bit PERCFG.U0CFG selects whether
to use alternative 1 or alternative 2 locations.
In Table 50, the USART0 signals are shown
as follows:
SPI:
• SCK: C
• SSN: SS14
• MOSI: MO
• MISO: MI
UART:
• RXDATA: RX
• TXDATA: TX
• RTS: RT
• CTS: CT
14
SSN should only be configured as a
pheripheral when using SPI slave mode
P2DIR.PRIP0
selects
the
order
of
precedence when assigning two peripherals to
the same pin location on P0. When set to 00,
USART0 has precedence if both USART0 and
USART1 are assigned to the same pins. Note
that if USART0 is configured to operate in
UART mode with hardware flow control
disabled, USART1 or timer 1 will have
precedence to use ports P0_4 and P0_5. It is
the user’s responsibility to not assign more
than two peripherals to the same pin locations,
as P2DIR.PRIP0 will not give a conclusive
order of precedence if more than two
peripherals are in conflict on a pin.
P2SEL.PRI3P1,
P2SEL.PRI2P1,
P2SEL.PRI1P1, and P2SEL.PRI0P1 select
the order of precedence when assigning two,
and in some cases three, peripherals to P1.
An example is if both the USARTs are assign
to P1 together with Timer 1 (channel 2, 1, and
0). By setting both PRI3P1 and PRI0P1 to 0,
USART0 will have precedence. Note that if
USART0 is configured to operate in UART
mode with hardware flow control disabled,
USART1 can still use P1_7 and P1_6, while
Timer 1 can use P1_2, P1_1, and P1_0. Also
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Page 92 of 242
CC1110Fx / CC1111Fx
on P1 it is the user’s responsibility to make
sure that there is a conclusive order of
precedence based on the PERCFG and P2SEL
settings.
13.4.6.2
responsibility to avoid configurations where the
order of precedence is not conclusive.
13.4.6.3
PERCFG.T1CFG selects whether to
alternative 1 or alternative 2 locations.
USART1
The SFR bit PERCFG.U1CFG selects whether
to use alternative 1 or alternative 2 locations.
In Table 50, the USART1 signals are shown
as follows:
• Channel 0 capture/compare pin: 0
• Channel 1 capture/compare pin: 1
• SCK: C
• Channel 2 capture/compare pin: 2
15
P2DIR.PRIP0
selects
the
order
of
precedence when assigning two peripherals to
the same pin location on P0. When set to 10
or 11, Timer 1 has precedence over USART1
and USART0 respectively. It is the user’s
responsibility to not assign more than two
peripherals to the same pin locations
• MOSI: MO
• MISO: MI
UART:
• RXDATA: RX
• TXDATA: TX
• RTS: RT
• CTS: CT
P2DIR.PRIP0
selects
the
order
of
precedence when assigning two peripherals to
the same pin location on P0. When set to 01,
USART1 has precedence if both USART0 and
USART1 are assigned to the same pins. Note
that if USART1 is configured to operate in
UART mode with hardware flow control
disabled, USART0 or timer 1 will have
precedence to use ports P0_3 and P0_2. It is
the user’s responsibility to not assign more
than two peripherals to the same pin locations,
as P2DIR.PRIP0 will not give a conclusive
order of precedence if more than two
peripherals are in conflict on a pin.
P2SEL.PRI3P1,
P2SEL.PRI2P1,
P2SEL.PRI1P1, and P2SEL.PRI0P1 select
the order of precedence when assigning two,
and in some cases three, peripherals to P1. By
setting PRI3P1 to 1 and PRI2P1 to 0,
USART1 will have precedence over both
USART0 and Timer 3. However, if USART1 is
configured to operate in UART mode with
hardware flow control disabled, there will be a
conflict on P1_4 between USART0 and Timer
3 (channel 1), which the P2SEL register
settings do not solve. It is the user’s
15
use
In Table 50, the Timer 1 signals are shown as
follows:
SPI:
• SSN: SS
Timer 1
SSN should only be configured as a
pheripheral when using SPI slave mode
P2SEL.PRI3P1,
P2SEL.PRI2P1,
P2SEL.PRI1P1, and P2SEL.PRI0P1 select
the order of precedence when assigning two,
and in some cases three, peripherals to P1.
When
P2SEL.PRI1P1=0
and
P2SEL.PRI0P1=1, Timer 1 has precedence
over Timer 4 and USART0 respectively. It is
the user’s responsibility to avoid configurations
where the order of precedence is not
conclusive.
13.4.6.4
Timer 3
PERCFG.T3CFG selects whether to
alternative 1 or alternative 2 locations.
use
In Table 50, the Timer 3 signals are shown as
follows:
• Channel 0 compare pin: 0
• Channel 1 compare pin: 1
P2SEL.PRI3P1,
P2SEL.PRI2P1,
P2SEL.PRI1P1, and P2SEL.PRI0P1 select
the order of precedence when assigning two,
and in some cases three, peripherals to P1.
Setting P2SEL.PRI2P1=1 gives Timer 3
precedence over USART1. It is the user’s
responsibility to avoid configurations where the
order of precedence is not conclusive.
13.4.6.5
Timer 4
PERCFG.T4CFG selects whether to
alternative 1 or alternative 2 locations.
use
In Table 50, the Timer 4 signals are shown as
follows:
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Page 93 of 242
CC1110Fx / CC1111Fx
• Channel 0 compare pin: 0
Refer to Section 13.10 on Page 141 for a
detailed description on how to use the ADC.
• Channel 1 compare pin: 1
P2SEL.PRI3P1,
P2SEL.PRI2P1,
P2SEL.PRI1P1, and P2SEL.PRI0P1 select
the order of precedence when assigning two,
and in some cases three, peripherals to P1.
Setting P2SEL.PRI12P1=1 gives Timer 4
precedence over Timer 1. It is the user’s
responsibility to avoid configurations where the
order of precedence is not conclusive.
13.4.6.6
I2S
The
I2S
configuration
register
bit
I2SCFG1.IOLOC selects whether to use
alternative 1 or alternative 2 locations.
In Table 50, the I2S signals are shown as
follows:
• Continuous Serial Clock (SCK): CK
• Word Select: WS
13.4.8
Debug Interface
Ports P2_1 and P2_2 are used for debug data
and clock signals, respectively. These are
shown as DD (debug data) and DC (debug
clock) in Table 50. The state of P2SEL is
overridden by the debug interface. Also,
P2DIR.DIRP2_1 and P2DIR.DIRP2_2 is
overridden when the chip changes the
direction to supply the external host with data.
13.4.9
32.768 kHz XOSC Input
Ports P2_3 and P2_4 are used to connect to
an external 32.768 kHz crystal. These port
pins will be set in analog mode and used by
the 32.768 kHz crystal oscillator when
CLKCON.OSC32K is low, regardless of the
configurations of these pins.
• Serial Data In: RX
13.4.10 Radio Test Output Signals
• Serial Data Out: TX
For debug and test purposes, a number of
internal status signals in the radio may be
output on the port pins P1_7 - P1_5. This
debug option is controlled through the RF
registers IOCFG2 - IOCFG0 (see Section 16
for more details).
2
The I S interface will have precedence in
cases where other peripherals (except for the
debug interface) are configured to be on the
same location.
13.4.7
ADC
When using the ADC in an application, some
or all of the P0 pins must be configured as
ADC inputs. The port pins are mapped to the
ADC inputs so that P0_7 - P0_0 corresponds
to AIN7 - AIN0. To configure a P0 pin to be
used as an ADC input the corresponding bit in
the ADCCFG register must be set to 1. The
default values in this register select the Port 0
pins
as
non-ADC
input
i.e.
digital
input/outputs.
Setting IOCFGx.GDOx_CFG to a value other
than 0 will override the P1SEL_SELP1_7,
P1SEL_SELP1_6,
and
P1SEL_SELP1_5
settings, and the pins will automatically
become outputs. These pins cannot be used
when the I2S interface is enabled.
13.4.11 I/O Registers
The registers for the IO ports are described in
this section. The registers are:
Note: P0_6 and P0_7 do not exist on
CC1111Fx, hence six input channels are
available (AIN0 – AIN5)
• P0 Port 0
• P1 Port 1
• P2 Port 2
The settings in the ADCCFG register override
the settings in P0SEL (the register used to
select a pin to be either GPIO or to have a
peripheral function).
The ADC can be configured to use the
general-purpose I/O pin P2_0 as an external
trigger to start conversions. P2_0 must be
configured as a general-purpose I/O in input
mode, when being used for ADC external
trigger.
SWRS033F
• PERCFG Peripheral Control
• ADCCFG ADC Input Configuration
• P0SEL Port 0 Function Select
• P1SEL Port 1 Function Select
• P2SEL Port 2 Function Select
• P0DIR Port 0 Direction
• P1DIR Port 1 Direction
Page 94 of 242
CC1110Fx / CC1111Fx
• P2DIR Port 2 Direction
• P1IFG Port 1 Interrupt Status Flag
• P0INP Port 0 Input Mode
• P2IFG Port 2 Interrupt Status Flag
• P1INP Port 1 Input Mode
• PICTL Port Interrupt Control
• P2INP Port 2 Input Mode
• P1IEN Port 1 Interrupt Mask
• P0IFG Port 0 Interrupt Status Flag
P0 (0x80) - Port 0
Bit
Name
Reset
R/W
Description
7:0
P0[7:0]
0xFF
R/W
Port 0. General purpose I/O port. Bit-addressable.
P1 (0x90) - Port 1
Bit
Name
Reset
R/W
Description
7:0
P1[7:0]
0xFF
R/W
Port 1. General purpose I/O port. Bit-addressable.
Name
Reset
R/W
Description
1
R/W
Not used
P2[4:0]
0x1F
R/W
Port 2. General purpose I/O port. Bit-addressable.
P2 (0xA0) - Port 2
Bit
7:5
4:0
PERCFG (0xF1) - Peripheral Control
Bit
Name
7
6
5
4
T1CFG
T3CFG
T4CFG
3:2
1
0
U1CFG
U0CFG
Reset
R/W
Description
0
R0
Not used
0
R/W
Timer 1 I/O location
0
0
R/W
R/W
0
Alternative 1 location
1
Alternative 2 location
Timer 3 I/O location
0
Alternative 1 location
1
Alternative 2 location
Timer 4 I/O location
0
Alternative 1 location
1
Alternative 2 location
00
R0
Not used
0
R/W
USART1 I/O location
0
R/W
0
Alternative 1 location
1
Alternative 2 location
USART0 I/O location
0
Alternative 1 location
1
Alternative 2 location
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CC1110Fx / CC1111Fx
ADCCFG (0xF2) - ADC Input Configuration
Bit
Name
Reset
R/W
Description
7:0
ADCCFG[7:0]
0x00
R/W
ADC input configuration. ADCCFG[7:0] select P0_7 - P0_0 as ADC inputs
AIN7 - AIN0
0
ADC input disabled
1
ADC input enabled
P0SEL (0xF3) - Port 0 Function Select
Bit
Name
Reset
R/W
Description
7:0
SELP0_[7:0]
0x00
R/W
P0_7 to P0_0 function select
0
General purpose I/O
1
Peripheral function
P1SEL (0xF4) - Port 1 Function Select
Bit
Name
Reset
R/W
Description
7:0
SELP1_[7:0]
0
R/W
P1_7 to P1_0 function select
0
General purpose I/O
1
Peripheral function
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CC1110Fx / CC1111Fx
P2SEL (0xF5) - Port 2 Function Select
Bit
Name
7
6
5
4
3
2
1
0
PRI3P1
PRI2P1
PRI1P1
PRI0P1
SELP2_4
SELP2_3
SELP2_0
Reset
R/W
0
R0
Not used
0
R/W
Port 1 peripheral priority control. These bits shall determine the order of
precedence in the case when PERCFG assigns USART0 and USART1 to the
same pins.
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
Description
0
USART0 has priority
1
USART1 has priority
Port 1 peripheral priority control. These bits shall determine the order of
precedence in the case when PERCFG assigns USART1 and timer 3 to the
same pins.
0
USART1 has priority
1
Timer 3 has priority
Port 1 peripheral priority control. These bits shall determine the order of
precedence in the case when PERCFG assigns timer 1 and timer 4 to the
same pins.
0
Timer 1 has priority
1
Timer 4 has priority
Port 1 peripheral priority control. These bits shall determine the order of
precedence in the case when PERCFG assigns USART0 and timer 1 to the
same pins.
0
USART0 has priority
1
Timer 1 has priority
P2_4 function select
0
General purpose I/O
1
Peripheral function
P2_3 function select
0
General purpose I/O
1
Peripheral function
P2_0 function select
0
General purpose I/O
1
Peripheral function
P0DIR (0xFD) - Port 0 Direction
Bit
Name
Reset
R/W
Description
7:0
DIRP0_[7:0]
0x00
R/W
P0_7 to P0_0 I/O direction
0
Input
1
Output
P1DIR (0xFE) - Port 1 Direction
Bit
Name
Reset
R/W
Description
7:0
DIRP1_[7:0]
0x00
R/W
P1_7 to P1_0 I/O direction
0
Input
1
Output
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CC1110Fx / CC1111Fx
P2DIR (0xFF) - Port 2 Direction
Bit
Name
Reset
R/W
Description
7:6
PRIP0[1:0]
00
R/W
Port 0 peripheral priority control. These bits shall determine the order of
precedence in the case when PERCFG assigns two peripherals to the same
pins
5
4:0
DIRP2_[4:0]
00
USART0 - USART1
01
USART1 - USART0
10
Timer 1 channels 0 and 1 - USART1
11
Timer 1 channel 2 - USART0
0
R0
Not used
00000
R/W
P2_4 to P2_0 I/O direction
0
Input
1
Output
P0INP (0x8F) - Port 0 Input Mode
Bit
Name
Reset
R/W
Description
7:0
MDP0_[7:0]
0x00
R/W
P0_7 to P0_0 I/O input mode
0
Pull-up / pull-down
1
Tristate
P1INP (0xF6) - Port 1 Input Mode
Bit
Name
Reset
R/W
Description
7:2
MDP1_[7:2]
000000
R/W
P1_7 to P1_2 I/O input mode, note that P1_1 and P1_0 do not have pull
capability
1:0
00
R0
0
Pull-up / pull-down
1
Tristate
Not used
P2INP (0xF7) - Port 2 Input Mode
Bit
Name
Reset
R/W
Description
7
PDUP2
0
R/W
Port 2 pull-up/down select. Selects function for all Port 2 pins configured as
pull-up/pull-down inputs.
6
5
4:0
PDUP1
PDUP0
MDP2_[4:0]
0
0
00000
R/W
R/W
R/W
0
Pull-up
1
Pull-down
Port 1 pull-up/down select. Selects function for all Port 1 pins configured as
pull-up/pull-down inputs, except for P1_0 and P1_1, which do not have pullup/down capability.
0
Pull-up
1
Pull-down
Port 0 pull-up/down select. Selects function for all Port 0 pins configured as
pull-up/pull-down inputs.
0
Pull-up
1
Pull-down
P2_4 to P2_0 I/O input mode
0
Pull-up / pull-down
1
Tristate
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CC1110Fx / CC1111Fx
P0IFG (0x89) - Port 0 Interrupt Status Flag
CC1110Fx
Bit
Name
Reset
R/W
Description
7:0
P0IF[7:0]
0x00
R/W0
Port 0, inputs 7 to 0 interrupt status flags.
0
No interrupt pending
1
Interrupt pending
CC1111Fx
Bit
Name
Reset
R/W
Description
7
USB_RESUME
0
R/W0
USB resume detected during suspend mode
0
R/W0
Not used
0
R/W0
Port 0, inputs 5 to 0 interrupt status flags.
6
5:0
P0IF[5:0]
0
No interrupt pending
1
Interrupt pending
P1IFG (0x8A) - Port 1 Interrupt Status Flag
Bit
Name
Reset
R/W
Description
7:0
P1IF[7:0]
0x00
R/W0
Port 1, inputs 7 to 0 interrupt status flags.
0
No interrupt pending
1
Interrupt pending
P2IFG (0x8B) - Port 2 Interrupt Status Flag
Bit
Name
7:5
4:0
P2IF[4:0]
Reset
R/W
Description
0
R0
Not used
0
R/W0
Port 2, inputs 4 to 0 interrupt status flags.
0
No interrupt pending
1
Interrupt pending
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CC1110Fx / CC1111Fx
PICTL (0x8C) - Port Interrupt Control
Bit
Name
Reset
R/W
0
R0
Not used
PADSC
0
R/W
Drive strength control for I/O pins in output mode. Selects output drive
capability to account for low I/O supply voltage VDD on pin DVDD.
7
6
5
4
3
2
1
0
P2IEN
P0IENH
P0IENL
P2ICON
P1ICON
P0ICON
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
Description
0
Minimum drive capability. VDD equal or greater than 2.6 V
1
Maximum drive capability. VDD less than 2.6 V
Port 2, inputs 4 to 0 interrupt enable.
0
Interrupts are disabled
1
Interrupts are enabled
Port 0, inputs 7 to 4 interrupt enable.
0
Interrupts are disabled
1
Interrupts are enabled
Port 0, inputs 3 to 0 interrupt enable.
0
Interrupts are disabled
1
Interrupts are enabled
Port 2, inputs 4 to 0 interrupt configuration. This bit selects the interrupt
request condition for all port 2 inputs
0
Rising edge on input gives interrupt
1
Falling edge on input gives interrupt
Port 1, inputs 7 to 0 interrupt configuration. This bit selects the interrupt
request condition for all port 1 inputs
0
Rising edge on input gives interrupt
1
Falling edge on input gives interrupt
Port 0, inputs 7 to 0 interrupt configuration. This bit selects the interrupt
request condition for all port 0 inputs. For CC1111Fx , this bit must be set to 0
when USB is used, since the internal USB resume interrupt mapped to P0[7]
uses rising edge.
0
Rising edge on input gives interrupt
1
Falling edge on input gives interrupt
P1IEN (0x8D) - Port 1 Interrupt Mask
Bit
Name
Reset
R/W
Description
7:0
P1_[7:0]IEN
0x00
R/W
Port P1_7 to P1_0 interrupt enable
0
Interrupts are disabled
1
Interrupts are enabled
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CC1110Fx / CC1111Fx
13.5 DMA Controller
The CC1110Fx/CC1111Fx includes a direct
memory access (DMA) controller, which can
be used to relieve the 8051 CPU core of
handling data movement operations. Because
of this, the CC1110Fx/CC1111Fx can achieve high
overall performance with good power
efficiency. The DMA controller can move data
from a peripheral unit such as the ADC or RF
transceiver to memory with minimum CPU
intervention.
The DMA controller coordinates all DMA
transfers, ensuring that DMA requests are
prioritized appropriately relative to each other
and CPU memory access. The DMA controller
contains 5 programmable DMA channels for
data movement.
The DMA controller controls data movement
over the entire XDATA memory space. Since
most of the SFRs are mapped into the XDATA
memory space these flexible DMA channels
can be used to unburden the CPU in
innovative ways, e.g. feed a USART and I2S
with data from memory, periodically transfer
samples between ADC and memory, transfer
data to and from USB FIFOs (CC1111Fx) etc.
Use of the DMA can also reduce system
power consumption by keeping the CPU idle
and not have it to wake up to move data to or
from a peripheral unit (see Section 13.1.2).
Note that Section 11.2.3.3 describes which
SFRs are not mapped into XDATA memory
space.
The main features of the DMA controller are
as follows:
• Five independent DMA channels
• Three configurable
channel priority
levels
of
DMA
• 31 configurable trigger events
• Independent control of source and
destination address
• Single, block, and repeated transfer
modes
• Supports variable transfer count length
by including the length field in the data
to be transferred
• Can operate in either word-size or bytesize mode
13.5.1
DMA Operation
There are five DMA channels available in the
DMA controller numbered channel 0 to
channel 4. Each DMA channel can move data
from one place within XDATA memory space
to another i.e. between XDATA locations.
Some CPU-specific SFRs reside inside the
CPU core and can only be accessed using the
SFR memory space and can therefore not be
accessed using DMA. These registers are
shown in gray in Table 30 on Page 47.
Note: In the following sections, an n in the
register name represent the channel
number 0, 1, 2, 3, or 4 if nothing else is
stated
In order to use a DMA channel it must first be
configured as described in Sections 0 and
13.5.3.
Once a DMA channel has been configured it
must be armed before any transfers are
allowed to be initiated. A DMA channel is
armed by setting the appropriate bit DMAARMn
in the DMA Channel Arm register DMAARM.
When a DMA channel is armed it will start to
move data when the configured DMA trigger
event occurs. When a DMA channel is armed
a transfer will begin when the configured DMA
trigger event occurs. Note that it takes 9
system clocks from the arm bit is set until the
new configuration is loaded. While the new
configuration is being loaded, the DMA
channel will be able to accept triggers. This
will, however, not be the trigger stored in the
configuration data that are currently loaded,
but the trigger last used with this channel (after
a reset this will be trigger number 0, manual
trigger using the DMAREQ.DMAREQn bit). If n
channels are armed at the same time, loading
the configuration takes n x 9 clock cycles.
Channel 1 will first be ready, then channel 2,
and finally channel 0. It can not be assumed
that channel 1 is ready after 9 clock cycles,
channel 2 after 18 clock cycles, etc. To avoid
having the DMA channels starting to move
data on unwanted triggers when changing
configuration, a dummy configuration should
be loaded in-between configuration changes,
setting TRIG to 0. Alternatively, abort the
currently armed DMA channel before rearming
it. There are 31 possible DMA trigger events,
e.g. UART transfer, Timer overflow etc. The
DMA trigger events are listed in Table 51.
Figure 26 shows a DMA operation flow chart.
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CC1110Fx / CC1111Fx
Initialization
Write DMA channel
configuration
Yes
No
Reconfigure?
DMA Channel Idle
No
Setting DMAARM.ABORT=1 will abort all
channels where the DMAARMn bit is set
simultaneously.
I.e., setting DMAARM=0x85 will abort
channel 1 and channel 3
DMAARM.DMAARMn=1?
Yes
Load DMA Channel
configuration
DMA Channel Armed
Trigger or
DMAREQ.DMAREQn=1?
No
Yes
Transfer one byte or word
when channel is granted
access
Modify source/destination
address
Yes
Reached transfer
count?
Yes
Set interrupt flag.
(DMAIRQ.DMAIFn=1.
IRCON.DMAIF=1
if IRQMASK=1)
Repetitive transfer
mode?
No
DMAARMn=0
No
Block
Transfer mode?
Single
Figure 26: DMA Operation
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CC1110Fx / CC1111Fx
13.5.2
DMA Configuration Parameters
Setup and control of the DMA operation is
performed by the user software. This section
describes the parameters which must be
configured before a DMA channel can be
used. Section 13.5.3 on Page 105 describes
how the parameters are set up in software and
passed to the DMA controller.
Variable Length Transfer Count: When
VLEN≠000 and VLEN≠111, the transfer count
is given by the value of the first byte/word in
source data, n, + a constant given by the
VLEN setting. This allows for variable length
transfer count.
Note: For byte size transfers (see Section
13.5.2.4), n is defined as the first byte in
source data or the 7 LSB of the first byte in
source data, depending on the M8 setting
(see Section 13.5.2.9). For word size
transfers, n is the 13 LSB of the first word
in source data.
The behavior of each of the five DMA
channels is configured with the following
parameters:
13.5.2.1
Source Address (SRCADDR)
The address of the location in XDATA memory
space where the DMA channel shall start to
read data.
13.5.2.2
There are four possible configurations:
1. VLEN=001
Transfer
number
of
commanded by n + 1
Destination Address (DESTADDR)
2. VLEN=010
The address of the location in XDATA memory
space where the DMA channel will write the
data read from the source address. The user
must ensure that the destination is writable.
13.5.2.3
Transfer
number
commanded by n
Fixed Length Transfer Count: When
VLEN=000 or VLEN=111, the transfer count is
set by the LEN setting.
of
bytes/words
Transfer
number
of
commanded by n + 2
bytes/words
3. VLEN=011
Transfer Count
The number of bytes/words needed to be
moved from source to destination. When the
transfer count is reached, the DMA controller
rearms or disarms the DMA channel
(depending on transfer mode) and alert the
CPU by setting the DMAIRQ.DMAIFn bit to 1.
If IRQMASK=1, IRCON.DMAIF will also be set
and an interrupt request is generated if
IEN1.DMAIE=1. The transfer count can be of
fixed or variable length depending on how the
DMA channel is configured.
bytes/words
4. VLEN=100
Transfer
number
of
commanded by n + 3
bytes/words
For all of the above configurations, the transfer
count will be limited to LEN bytes/words when
n ≥ LEN. In cases where n < LEN, the transfer
count is given by the VLEN setting. This means
that when VLEN=010, LEN should be equal to
nmax, while in the other three cases, LEN
should be set to nmax + 1.
Figure 27 shows the different VLEN options.
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CC1110Fx / CC1111Fx
Byte/Word n+2
Byte/Word n+1
Byte/Word n+1
Byte/Word n+1
Byte/Word n+1
Byte/Word n
Byte/Word n
Byte/Word n
Byte/Word n
Byte/Word n-1
Byte/Word n-1
Byte/Word n-1
Byte/Word n-1
Byte/Word n-2
Byte/Word n-2
Byte/Word n-2
Byte/Word n-2
.
.
.
.
.
.
.
.
Byte/Word 2
Byte/Word 1
Byte/Word 2
Byte/Word 1
.
.
.
.
Byte/Word 3
Byte/Word 2
Byte/Word 1
Byte/Word 3
n < LEN
Byte/Word 3
n < LEN
n < LEN
Byte/Word 3
n < LEN
.
.
.
.
LEN = n + 1
Byte/Word n+3
Byte/Word n+2
LEN = n + 1
Byte/Word n+3
Byte/Word n+2
LEN = n + 1
Byte/Word n+3
Byte/Word n+2
LEN = n + 1
Byte/Word n+3
Byte/Word 2
Byte/Word 1
Length = n
Length = n
Length = n
Length = n
VLEN = 001
VLEN = 010
VLEN = 011
VLEN = 100
If n ≥ LEN, LEN bytes/words are
being transferred. The dotted line
shows the case where LEN = n + 1
Figure 27: Variable Length Transfer Count Options
13.5.2.4
Byte
or
(WORDSIZE)
Word
Transfers
Determines whether each DMA transfer
should be 8-bit (byte) or 16-bit (word).
13.5.2.5
Repeated block. On a trigger the number of
byte/word transfers specified by the transfer
count is performed as quickly as possible,
after
which
the
CPU
is
notified
(DMAIRQ.DMAIFn=1) and the DMA channel is
rearmed.
Transfer Mode (TMODE)
The transfer mode determines how the DMA
channel behaves when transferring data.
There are four different transfer modes.
Single. On a trigger a single byte/word
transfer occurs and the DMA channel awaits
the next trigger. After completing the number
of transfers specified by the transfer count, the
CPU is notified (DMAIRQ.DMAIFn=1) and the
DMA channel is disarmed.
Block. On a trigger the number of byte/word
transfers specified by the transfer count is
performed as quickly as possible, after which
the CPU is notified (DMAIRQ.DMAIFn=1) and
the DMA channel is disarmed.
Repeated single. On a trigger a single
byte/word transfer occurs and the DMA
channel awaits the next trigger. After
completing the number of transfers specified
by the transfer count, the CPU is notified
(DMAIRQ.DMAIFn=1) and the DMA channel is
rearmed.
13.5.2.6
Trigger Event (TRIG)
A DMA trigger event will initiate a single
byte/word transfer, a block transfer, or
repeated versions of these. Each DMA
channel can be set up to sense on a single
trigger. The TRIG field in the configuration
determines which trigger the DMA channel is
to use. In addition to the configured trigger, a
DMA channel can always be triggered by
setting its designated DMAREQ.DMAREQn flag.
The DMA trigger sources are described in
Table 51 on Page 107.
13.5.2.7
Source and Destination Increment
(SRCINC and DESTINC)
When the DMA channel is armed or rearmed,
the source and destination addresses are
transferred to internal address pointers. These
pointers, and hence the source and
destination addresses, can be controlled to
increment, decrement, or not change between
byte/word transfers in order to give good
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CC1110Fx / CC1111Fx
flexibility. The possibilities
increment/decrement are:
for
address
• Increment by zero. The address pointer
shall remain fixed after each byte/word
transfer.
• Increment by one. The address pointer
shall increment one count after each
byte/word transfer.
• Increment by two. The address pointer
shall increment two counts after each
byte/word transfer.
• Decrement by one. The address pointer
shall decrement one count after each
byte/word transfer.
13.5.2.8
Interrupt Mask (IRQMASK)
configured before a DMA channel can be
armed and activated. The parameters are not
configured directly through SFRs, but instead
they are written in a special DMA configuration
data structure in memory. Each DMA channel
in use requires its own DMA configuration data
structure. The DMA configuration data
structure consists of eight bytes and is
described in Table 52. A DMA configuration
data structure may reside at any location in
unified memory space decided upon by the
user software, and the address location is
passed to the DMA controller through a set of
SFRs DMAxCFGH:DMAxCFGL (x is 0 or 1).
Once a channel has been armed, the DMA
controller will read the configuration data
structure for that channel, given by the
address in DMAxCFGH:DMAxCFGL.
The DMA transfer will upon completion set
IRCON.DMAIF=1 if this bit is set to 1. An
interrupt request is being generated if
IEN1.DMAIE=1.
It is important to note that the method for
specifying the start address for the DMA
configuration data structure differs between
DMA channel 0 and DMA channels 1 - 4 as
follows:
13.5.2.9
DMA0CFGH:DMA0CFGL gives the start address
for DMA channel 0 configuration data
structure.
Mode 8 Setting (M8)
When variable length transfer count is used
(VLEN≠000 and VLEN≠111) this field
determines whether to use seven or eight bits
of the first byte in source data to determine the
transfer count. This configuration is only
applicable when doing byte transfers.
13.5.2.10 DMA Priority (PRIORITY)
A DMA priority is associated with each DMA
channel. The DMA priority is used to
determine the winner in the case of multiple
simultaneous internal memory requests, and
whether the DMA memory access should have
priority or not over a simultaneous CPU
memory access. In case of an internal tie, a
round-robin scheme is used to ensure access
for all. There are three levels of DMA priority:
DMA1CFGH:DMA1CFGL gives the start address
for DMA channel 1 configuration data structure
followed by channel 2 - 4 configuration data
structures.
This means that the DMA controller expects
the DMA configuration data structures for DMA
channels 1 - 4 to lie in a contiguous area in
memory, starting at the address held in
DMA1CFGH:DMA1CFGL and consisting of 32
bytes.
13.5.4
Aborting Transfers
Ongoing byte/word transfers or armed DMA
channels will be aborted using the DMAARM
register to disarm the DMA channel.
Low: Lowest internal priority. DMA access will
always defer to a CPU access.
One or more DMA channels are aborted by
writing a 1 to DMAARM.ABORT register bit, and
at the same time select which DMA channels
to abort by setting the corresponding,
DMAARM.DMAARMn bits to 1. When setting
DMAARM.ABORT to 1, the DMAARM.DMAARMn
bits for non-aborted channels must be written
as 0.
13.5.3
An example of DMA channel arm and disarm
is shown in Figure 28.
High: Highest internal priority. DMA access
will always prevail over CPU access.
Normal: Second highest internal priority.
Guarantees that DMA access prevails over
CPU on at least every second try.
DMA Configuration Setup
The DMA channel parameters such as
address mode, transfer mode and priority
described in the previous section have to be
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CC1110Fx / CC1111Fx
MOV DMAARM, #0x03
MOV DMAARM, #0x81
; Arm DMA channel 0 and 1
; Disarm DMA channel 0, channel 1 is still armed
Figure 28: DMA Arm/Disarm Example
13.5.5
13.5.6
DMA Interrupts
Each DMA channel can be configured to
generate an interrupt to the CPU when the
transfer
count
is
reached.
This
is
accomplished by setting the IRQMASK bit in
the channel configuration to 1. When this bit is
set to 1, IRCON.DMAIF=1 will be set to 1
when reaching the transfer count. An interrupt
request is being generated if IEN1.DMAIE=1.
Regardless of the IRQMASK bit in the channel
configuration, DMAIRQ.DMAIFn will be set
upon DMA channel complete. Thus software
should always check (and clear) this register
when rearming a channel with a changed
IRQMASK setting. Failure to do so could
generate an interrupt based on the stored
interrupt flag.
DMA Memory Access
The byte/word transfer is affected by endian
convention. This as the memory system use
Big-Endian in XDATA memory, while LittleEndian is used in SFR memory. This must be
accounted for in compilers.
13.5.7
DMA USB Endianess (CC1111Fx)
When a USB FIFO is accessed using word
transfer, the endianess of the word
read/written can be controlled by setting the
ENDIAN.USBWLE
and
ENDIAN.USBRLE
configuration bits in the ENDIAN register. See
Section 13.16 for details.
DMA Trigger
Number
DMA Trigger
Name
Functional
Unit
Description
0
NONE
DMA
No trigger, setting DMAREQ.DMAREQx bit starts a single byte/word
transfer or a block transfer
1
PREV
DMA
DMA channel is triggered by completion of previous channel
2
T1_CH0
Timer 1
Timer 1, capture/compare, channel 0
3
T1_CH1
Timer 1
Timer 1, capture/compare, channel 1
4
T1_CH2
Timer 1
Timer 1, capture/compare, channel 2
5
Not in use.
6
T2_OVFL
Timer 2
Timer 2, timer count reaches 0x00
7
T3_CH0
Timer 3
Timer 3, compare, channel 0
8
T3_CH1
Timer 3
Timer 3, compare, channel 1
9
T4_CH0
Timer 4
Timer 4, compare, channel 0
10
T4_CH1
Timer 4
Timer 4, compare, channel 1
11
ST
Sleep Timer
Sleep Timer compare
12
IOC_0
IO Controller
P0_1 input transition
16
13
IOC_1
IO Controller
P1_3 input transition
17
14
URX0
USART0
USART0 RX complete
15
UTX0
USART0
USART0 TX complete
16
URX1
USART1
USART1 RX complete
17
UTX1
USART1
USART1 TX complete
16
17
Trigger on rising edge. P0SEL.SELP0_1 and P0DIR.P0_1 must be 0
Trigger on falling edge. P1SEL.SELP1_3 and P1DIR.P1_3 must be 0
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DMA Trigger
Number
DMA Trigger
Name
Functional
Unit
Description
18
FLASH
Flash
Controller
Flash data write complete
19
RADIO
Radio
RF packet byte received/transmit
20
ADC_CHALL
ADC
ADC end of a conversion in a sequence, sample ready
21
ADC_CH0
ADC
ADC end of conversion (AIN0, single-ended or AIN0 - AIN1, differential).
Sample ready
22
ADC_CH1
ADC
ADC end of conversion (AIN1, single-ended or AIN0 - AIN1, differential).
Sample ready
23
ADC_CH2
ADC
ADC end of conversion (AIN2, single-ended or AIN2 - AIN3, differential).
Sample ready
24
ADC_CH3
ADC
ADC end of conversion (AIN3, single-ended or AIN2 - AIN3, differential).
Sample ready
25
ADC_CH4
ADC
ADC end of conversion (AIN4, single-ended or AIN4 - AIN5, differential).
Sample ready
26
ADC_CH5
ADC
ADC end of conversion (AIN5, single-ended or AIN4 - AIN5, differential).
Sample ready
ADC_CH6
ADC
ADC end of conversion (AIN6, single-ended or AIN6 - AIN7, differential).
Sample ready
I2SRX
IS
I S RX complete
ADC_CH7
ADC
ADC end of conversion (AIN7, single-ended or AIN6 - AIN7, differential).
Sample ready
I2STX
IS
I S TX complete
29
ENC_DW
AES
AES encryption processor requests download input data
30
ENC_UP
AES
AES encryption processor requests upload output data
27
2
2
28
2
2
Table 51: DMA Trigger Sources
Byte
Offset
Bit
Field Name
Description
0
7:0
SRCADDR[15:8]
The DMA channel source address, high byte
1
7:0
SRCADDR[7:0]
The DMA channel source address, low byte
2
7:0
DESTADDR[15:8]
The DMA channel destination address, high byte.
Note that flash memory is not directly writeable.
3
7:0
DESTADDR[7:0]
The DMA channel destination address, low byte.
Note that flash memory is not directly writeable.
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Byte
Offset
Bit
Field Name
Description
4
7:5
VLEN[2:0]
Transfer count mode.
000
Use LEN for transfer count
001
Transfer number of bytes/words commanded by n + 1
010
Transfer number of bytes/words commanded by n
011
Transfer number of bytes/words commanded by n + 2
100
Transfer number of bytes/words commanded by n + 3
101
Reserved
110
Reserved
111
Alternative for using LEN as transfer count
Note: For byte size transfers (see Section 13.5.2.4), n is defined as the first byte in
source data or the 7 LSB of the first byte in source data, depending on the M8
setting (see Section13.5.2.9). For word size transfers, n is the 13 LSB of the first
word in source data
4
4:0
LEN[12:8]
5
7:0
LEN[7:0]
This value is used as transfer count when VLEN=000 or VLEN=111 (fixed length
transfer count). For all cases where VLEN≠000 and VLEN≠111 (variable length
transfer count), the transfer count will be limited to LEN bytes/words when n ≥ LEN.
In cases where n < LEN, the transfer count is given by the VLEN setting.
6
7
WORDSIZE
Selects whether each transfer shall be 8-bit (0) or 16-bit (1).
6
6:5
TMODE[1:0]
Transfer mode:
6
4:0
TRIG[4:0]
00
Single
01
Block
10
Repeated single
11
Repeated block
Select DMA trigger
00000
No trigger (writing to DMAREQ is only trigger)
00001
The previous DMA channel finished
00010
Selects one of the triggers shown in Table 51. The trigger is selected in the
order shown in the table.
11111
7
7:6
SRCINC[1:0]
Source address increment mode (after each transfer)
00
0 bytes/words
01
1 bytes/words
10
2 bytes/words
11
–1 bytes/words
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Byte
Offset
Bit
Field Name
Description
7
5:4
DESTINC[1:0]
Destination address increment mode (after each transfer)
7
7
7
3
2
1:0
IRQMASK
M8
PRIORITY[1:0]
00
0 bytes/words
01
1 bytes/words
10
2 bytes/words
11
–1 bytes/words
Interrupt Mask for this channel.
0
Disable interrupt generation
1
Enable interrupt generation upon reaching transfer count
When variable length transfer count is used (VLEN≠000 and VLEN≠111) this field
determines whether to use seven or eight bits of the first byte in source data to
determine the transfer count. Only applicable when WORDSIZE=0.
0
Use all 8 bits
1
Use 7 LSB
The DMA channel priority:
00
Low, DMA access will always defer to a CPU access
01
Normal, guarantees that DMA access prevails over CPU on at least every
second try.
10
High, DMA access will always prevail over CPU access.
11
Reserved
Table 52: DMA Configuration Data Structure
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13.5.8
DMA Registers
This section describes the SFRs associated
with the DMA Controller.
DMAARM (0xD6) - DMA Channel Arm
Bit
Name
Reset
R/W
Description
7
ABORT
0
R0/W
DMA abort. Ongoing byte/word transfers or armed DMA
channels will be aborted when writing a 1 to this bit, and at the
same time select which DMA channels to abort by setting the
corresponding, DMAARM.DMAARMn bits to 1
6:5
4
DMAARM4
0
Normal operation
1
Abort channels all selected channels
0
R0
Not used
0
R/W
DMA arm channel 4
This bit must be set to 1 in order for any byte/word transfers to
occur on the channel. For non-repetitive transfer modes, the
bit is automatically cleared when the transfer count is reached
3
DMAARM3
0
R/W
DMA arm channel 3
This bit must be set to 1 in order for any byte/word transfers to
occur on the channel. For non-repetitive transfer modes, the
bit is automatically cleared when the transfer count is reached
2
DMAARM2
0
R/W
DMA arm channel 2
This bit must be set to 1 in order for any byte/word transfers to
occur on the channel. For non-repetitive transfer modes, the
bit is automatically cleared when the transfer count is reached
1
DMAARM1
0
R/W
DMA arm channel 1
This bit must be set to 1 in order for any byte/word transfers to
occur on the channel. For non-repetitive transfer modes, the
bit is automatically cleared when the transfer count is reached
0
DMAARM0
0
R/W
DMA arm channel 0
This bit must be set to 1 in order for any byte/word transfers to
occur on the channel. For non-repetitive transfer modes, the
bit is automatically cleared when the transfer count is reached
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DMAREQ (0xD7) - DMA Channel Start Request and Status
Bit
Name
7:5
4
DMAREQ4
Reset
R/W
000
R0
Not used
R/W1
DMA channel 4, manual trigger
H0
Setting this bit to 1 will have the same effect as a single trigger
event.
0
Description
This bit is cleared when the DMA channel is granted access.
3
DMAREQ3
0
R/W1
DMA channel 3, manual trigger
H0
Setting this bit to 1 will have the same effect as a single trigger
event.
This bit is cleared when the DMA channel is granted access.
2
DMAREQ2
0
R/W1
DMA channel 2, manual trigger
H0
Setting this bit to 1 will have the same effect as a single trigger
event.
This bit is cleared when the DMA channel is granted access.
1
DMAREQ1
0
R/W1
DMA channel 1, manual trigger
H0
Setting this bit to 1 will have the same effect as a single trigger
event.
This bit is cleared when the DMA channel is granted access.
0
DMAREQ0
0
R/W1
DMA channel 0, manual trigger
H0
Setting this bit to 1 will have the same effect as a single trigger
event.
This bit is cleared when the DMA channel is granted access.
DMA0CFGH (0xD5) - DMA Channel 0 Configuration Address High Byte
Bit
Name
Reset
R/W
Description
7:0
DMA0CFG[15:8]
0x00
R/W
The DMA channel 0 configuration address, high byte
DMA0CFGL (0xD4) - DMA Channel 0 Configuration Address Low Byte
Bit
Name
Reset
R/W
Description
7:0
DMA0CFG[7:0]
0x00
R/W
The DMA channel 0 configuration address, low byte
DMA1CFGH (0xD3) - DMA Channel 1 - 4 Configuration Address High Byte
Bit
Name
Reset
R/W
Description
7:0
DMA1CFG[15:8]
0x00
R/W
The DMA channel 1 - 4 configuration address, high byte
DMA1CFGL (0xD2) - DMA Channel 1 - 4 Configuration Address Low Byte
Bit
Name
Reset
R/W
Description
7:0
DMA1CFG[7:0]
0x00
R/W
The DMA channel 1 - 4 configuration address, low byte
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DMAIRQ (0xD1) - DMA Interrupt Flag
Bit
Name
7:5
4
3
2
1
0
DMAIF4
DMAIF3
DMAIF2
DMAIF1
DMAIF0
Reset
R/W
0
R0
Not used
0
R/W0
DMA channel 4 interrupt flag.
0
0
0
0
R/W0
R/W0
R/W0
R/W0
Description
0
Transfer count not reached
1
Transfer count reached/interrupt pending
DMA channel 3 interrupt flag.
0
Transfer count not reached
1
Transfer count reached/interrupt pending
DMA channel 2 interrupt flag.
0
Transfer count not reached
1
Transfer count reached/interrupt pending
DMA channel 1 interrupt flag.
0
Transfer count not reached
1
Transfer count reached/interrupt pending
DMA channel 0 interrupt flag.
0
Transfer count not reached
1
Transfer count reached/interrupt pending
ENDIAN (0x95) - USB Endianess Control (CC1111Fx)
Bit
Name
7:2
1
0
USBWLE
USBRLE
Reset
R/W
Description
0
R/W
Not used
0
R/W
USB Write Endianess setting for DMA channel word transfers to USB.
0
R/W
0
Big Endian
1
Little Endian
USB Read Endianess setting for DMA channel word transfers from USB.
0
Big Endian
1
Little Endian
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CC1110Fx / CC1111Fx
13.6 16-bit Timer, Timer 1
Timer 1 is an independent 16-bit timer which
supports typical timer/counter functions such
as input capture, output compare, and PWM
functions. The timer has three independent
capture/compare channels and uses one I/O
pin per channel.
The features of Timer 1 are as follows:
• Three capture/compare channels
• Rising, falling, or any edge input capture
• Set, clear, or toggle output compare
• Free-running, modulo
counter operation
or
up/down
• Clock prescaler for divide by 1, 8, 32, or
128
• Interrupt
request
generation
on
capture/compare and when reaching the
terminal count value
• Capture triggered by radio
The counter operates as either a free-running
counter, a modulo counter, or as an up/down
counter for use in centre-aligned PWM. It can
also be used in DSM mode.
It is possible to read the 16-bit counter value
through the two 8-bit SFRs; T1CNTH and
T1CNTL, containing the high-order byte and
low-order byte respectively. When the T1CNTL
register is read, the high-order byte of the
counter at that instant is buffered in T1CNTH
so that the high-order byte can be read from
T1CNTH. Thus T1CNTL shall always be read
first before reading T1CNTH.
All write accesses to the T1CNTL register will
reset the 16-bit counter.
The counter may produce an interrupt request
when the terminal count value (overflow) is
reached (see Section 13.6.2.1 - 13.6.2.3). It is
possible to start and halt the counter with
T1CTL control register settings. The counter is
started when a value other than 00 is written to
T1CTL.MODE. If 00 is written to T1CTL.MODE
the counter halts at its present value.
• DMA trigger function
• Delta-Sigma Modulator (DSM) mode
Note: In the following sections, an n in the
register name represent the channel
number 0, 1, or 2 if nothing else is stated
13.6.1
used as system clock source, the highest
clock frequency used by Timer 1 is fXOSC/2 for
CC1110Fx and 12 MHz for CC1111Fx, given that
the HS RCOSC has been calibrated.
13.6.2
16-bit Timer Counter
The timer consists of a 16-bit counter that
increments or decrements at each active clock
edge. The frequency of the active clock edges
is
given
by
CLKCON.TICKSPD
and
T1CTL.DIV. CLKCON.TICKSPD is used to set
the timer tick speed. The timer tick speed will
vary from 203.125 kHz to 26 MHz for CC1110Fx
and 187.5 kHz to 24 MHz for CC1111Fx (given
the use of a 26 MHz or 48 MHz crystal
respectively). Note that the clock speed of the
system clock is not affected by the TICKSPD
setting. The timer tick speed is further divided
in Timer 1 by the prescaler value set by
T1CTL.DIV. This prescaler value can be 1, 8,
32, or 128. Thus the lowest clock frequency
used by Timer 1 is 1.587 kHz and the highest
is 26 MHz when a 26 MHz crystal oscillator is
used as system clock source (CC1110Fx). The
lowest clock frequency used by Timer 1 is
1.465 kHz and the highest is 24 MHz for
CC1111Fx. When the high speed RC oscillator is
Timer 1 Operation
In general, the control register T1CTL is used
to control the timer operation. The various
modes of operation are described in the
following three sections.
13.6.2.1
Free-running Mode
In free-running mode the counter starts from
0x0000 and increments at each active clock
edge. When the counter reaches the terminal
count value 0xFFFF (overflow), the counter is
loaded with 0x0000 on the next timer tick and
continues incrementing its value as shown in
Figure 29. When 0xFFFF is reached, the
T1CTL.OVFIF flag is set. The IRCON.T1IF
flag is only asserted if the corresponding
interrupt mask bit TIMIF.OVFIM is set. An
interrupt request is generated when both
TIMIF.OVFIM and IEN1.T1EN are set to 1.
The free-running mode can be used to
generate independent time intervals and
output signal frequencies.
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CC1110Fx / CC1111Fx
0xFFFF
0x0000
OVFIF = 1
OVFIF = 1
Figure 29: Free-running Mode
13.6.2.2
Modulo Mode
T1CTL.OVFIF flag is set. The IRCON.T1IF
flag is only asserted if the corresponding
interrupt mask bit TIMIF.OVFIM is set. An
interrupt request is generated when both
TIMIF.OVFIM and IEN1.T1EN are set to 1.
The modulo mode can be used for
applications where a period other than 0xFFFF
is required.
In modulo mode the counter starts from
0x0000 and increments at each active clock
edge. When the counter reaches the terminal
count value T1CC0 (overflow), held in the
registers T1CC0H:T1CC0L, the counter is
loaded with 0x0000 on the next timer tick and
continues incrementing its value as shown in
Figure 30. When T1CC0 is reached, the
T1CC0
0x0000
OVFIF = 1
OVFIF = 1
Figure 30: Modulo Mode
13.6.2.3
Up/Down Mode
flag is set. The IRCON.T1IF flag is only
asserted if the corresponding interrupt mask
bit TIMIF.OVFIM is set. An interrupt request
is generated when both TIMIF.OVFIM and
IEN1.T1EN are set to 1. The up/down mode
can be used when symmetrical output pulses
are required with a period other than 0xFFFF,
and therefore allows implementation of centrealigned PWM output applications.
In up/down mode the counter starts from
0x0000 and increments at each active clock
edge. When the counter value matches the
terminal count value T1CC0, held in the
registers T1CC0H:T1CC0L, the counter counts
down until 0x0000 is reached and it starts
counting up again as shown in Figure 31.
When 0x0000 is reached, the T1CTL.OVFIF
T1CC0
0x0000
OVFIF = 1
OVFIF = 1
Figure 31: Up/Down Mode
13.6.3
Channel Mode Control
The channel mode is set with each channel’s
control and status register T1CCTLn. The
settings include input capture and output
compare modes.
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CC1110Fx / CC1111Fx
Note: Before an I/O pin can be used by the
timer, the required I/O pin must be configured
as a Timer 1 peripheral pin as described in
Section 13.4.6 on Page 91 .
13.6.4
Input Capture Mode
When a channel is configured as an input
capture channel, the I/O pin associated with
that channel, is configured as an input. After
the timer has been started, a rising edge,
falling edge or any edge on the input pin will
trigger a capture of the 16-bit counter contents
into the associated capture register. Thus the
timer is able to capture the time when an
external event takes place.
The channel input pin is synchronized to the
internal system clock. Thus pulses on the input
pin must have a minimum duration greater
than the system clock period.
The contents of the 16-bit capture register can
be read from registers T1CCnH:T1CCnL.
When the capture takes place, the interrupt
flag
for
the
appropriate
channel
(T1CTL.CH0IF,
T1CTL.CH1IF,
or
T1CTL.CH2IF for channel 0, 1, and 2
respectively) is asserted. The IRCON.T1IF
flag is only asserted if the corresponding
interrupt mask bit T1CCTL0.IM, T1CCTL1.IM,
or T1CCTL2.IM is set to 1. An interrupt
request is generated if the corresponding
interrupt mask bit is set together with
IEN1.T1EN.
13.6.4.1
RF Event Capture
Each timer channel may be configured so that
the RF events associated with the RF interrupt
(interrupt #16) will trigger a capture instead of
the normal input pin capture. This is done by
setting T1CCTLn.CPSEL=1. When this
configuration is chosen, the RF event(s)
enabled by RFIM (see Section 14.3.1 on Page
188) will trigger a capture. This way the timer
can be used to capture a value when e.g. a
start of frame delimiter (SFD) is detected.
Note: When using an RF event to trigger a
capture, both CLKCON.CLKSPD and
CLKCON.TICKSPD must be set to 000.
13.6.5
Output Compare Mode
In output compare mode the I/O pin associated
with a channel is set as an output. After the
timer has been started, the contents of the
counter are compared with the contents of the
channel compare register T1CCnH:T1CCnL. If
the compare register equals the counter
contents, the output pin is set, reset, or toggled
according to the compare output mode setting
of T1CCTLn.CMP. Note that all edges on
output pins are glitch-free when operating in a
given output compare mode. Writing to the
compare register T1CCnL is buffered so that a
value written to T1CCnL does not take effect
until the corresponding high order register,
T1CCnH is written. For output compare modes
0 - 2, a new value written to the compare
register T1CCnH:T1CCnL takes effect after
the registers have been written. For other
output compare modes the new value written
to the compare register takes effect when the
timer reaches 0x0000.
Note that channel 0 has fewer output compare
modes than channel 1 and 2 because
T1CC0H:T1CC0L has a special function in
modes 6 and 7, meaning these modes would
not be useful for channel 0.
When a compare occurs, the interrupt flag for
the appropriate channel (T1CTL.CH0IF,
T1CTL.CH1IF, or T1CTL.CH2IF for channel
0, 1, and 2 respectively) is asserted. The
IRCON.T1IF flag is only asserted if the
corresponding interrupt mask bit T1CCTL0.IM,
T1CCTL1.IM, or T1CCTL2.IM is set to 1. An
interrupt request is generated if the
corresponding interrupt mask bit is set together
with IEN1.T1EN. When operating in up-down
mode, the interrupt flag for channel 0 is set
when the counter reaches 0x0000 instead of
when a compare occurs.
Examples of output compare modes in various
timer modes are given in Figure 32, Figure 33,
and Figure 34.
Edge-aligned: PWM output signals can be
generated using the timer modulo mode and
channels 1 and 2 in output compare mode 5 or
6 (defined by T1CCTLn.CMP bits, where n is 1
or 2) as shown in Figure 33. The period of the
PWM signal is determined by the setting in
T1CC0 and the duty cycle is determined by
T1CCn.
PWM output signals can also be generated
using the timer free-running mode and
channels 1 and 2 in output compare mode 5 or
6 as shown in Figure 32. In this case the
period of the PWM signal is determined by
CLKCON.TICKSPD and the prescaler divider
value in T1CTL.DIV and the duty cycle is
determined by T1CCn (n = 1 or 2).
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CC1110Fx / CC1111Fx
The polarity of the PWM signal is determined
by whether output compare mode 5 or 6 is
used.
For both modulo mode and free-running mode
it is also possible to use compare mode 3 or 4
to generate a PWM output signal (see Figure
32 and Figure 33).
The polarity of the PWM signal is determined
by whether output compare mode 3 or 4 is
used.
Centre-aligned: PWM outputs can be
generated when the timer up/down mode is
selected. The channel output compare mode 3
or 4 (defined by T1CCTLn.CMP bits, where n is
1 or 2) is selected depending on required
polarity of the PWM signal (see Figure 34).
The period of the PWM signal is determined by
T1CC0 and the duty cycle for the channel
output is determined by T1CCn (n = 1 or 2).
0xFFFF
T1CC0
T1CCn
0x0000
0: Set output on compare
1: Clear output on compare
2: Toggle output on compare
3: Set output on compare-up,
clear on 0
4: Clear output on compare-up,
set on 0
5: Set when T1CCn,
clear when T1CC0
6: Clear when T1CCn,
set when T1CC0
T1CCn
T1CC0
T1CCn
T1CC0
Figure 32: Output Compare Modes, Timer Free-running Mode
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T1CC0
T1CCn
0x0000
0: Set output on compare
1: Clear output on compare
2: Toggle output on compare
3: Set output on compare-up,
clear on 0
4: Clear output on compare-up,
set on 0
5: Set when T1CCn,
clear when T1CC0
6: Clear when T1CCn,
set when T1CC0
T1CCn
T1CC0
T1CCn
T1CC0
Figure 33: Output Compare Modes, Timer Modulo Mode
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T1CC0
T1CCn
0x0000
0: Set output on compare
1: Clear output on compare
2: Toggle output on compare
3: Set output on compare-up,
clear on compare down
4: Clear output on compare-up,
set on compare-down
5: Set when T1CCn,
clear when T1CC0
6: Clear when T1CCn,
set when T1CC0
T1CCn
T1CCn
T1CC0
T1CCn
T1CC0
T1CCn
Figure 34: Output Modes, Timer Up/Down Mode
13.6.6
Timer 1 Interrupts
There is one interrupt vector assigned to the
timer. This is T1 (Interrupt #9, see Table 39).
The following timer events may generate an
interrupt request:
• Counter reaches terminal count value
(overflow) or turns around on zero
• Input capture event
• Output compare event
The
register
bits
T1CTL.OVFIF,
T1CTL.CH0IF,
T1CTL.CH1IF,
and
T1CTL.CH2IF contains the interrupt flags for
the terminal count value event (overflow), and
the three channel compare/capture events,
respectively. These flags will be asserted
regardless off the channel n interrupt mask bit
(T1CCTLn.IM). The CPU interrupt flag,
IRCON.T1IF will only be asserted if one or
more of the channel n interrupt mask bits are
set to 1. An interrupt request is only generated
when the corresponding interrupt mask bit is
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CC1110Fx / CC1111Fx
set together with IEN1.T1EN. The interrupt
mask bits are T1CCTL0.IM, T1CCTL1.IM,
T1CCTL2.IM, and TIMIF.OVFIM. Note that
enabling an interrupt mask bit will generate a
new interrupt request if the corresponding
interrupt flag is set.
When the timer is used in Free-running Mode
or Modulo Mode the interrupt flags are set as
follows:
• T1CTL.CH0IF, T1CTL.CH1IF,
T1CTL.CH2IF
are
set
compare/capture event
and
on
• T1CTL.OVFIF is set when counter
reaches terminal count value (overflow)
When the timer is used in Up/Down Mode the
interrupt flags are set as follows:
In compare mode:
• T1CTL.CH0IF
and
T1CTL.OVFIF
are set when counter turns around on
zero
• T1CTL.CH1IF
and
T1CTL.CH2IF
are set on compare event
In capture mode:
• T1CTL.OVFIF is set when counter
turns around on zero
• T1CTL.CH0IF, T1CTL.CH1IF, and
T1CTL.CH2IF are set on capture event
I addition, the CPU interrupt flag, IRCON.T1IF
will be asserted if the channel n interrupt mask
bit (T1CCTLn.IM) is set to 1.
13.6.7
Timer 1 DMA Triggers
There are three DMA triggers associated with
Timer 1, one for each channel. These are DMA
triggers T1_CH0, T1_CH1 and T1_CH2, which
are generated on timer capture/compare
events as follows:
•
T1_CH0 - Channel 0 capture/compare
•
T1_CH1 - Channel 1 capture/compare
•
T1_CH2 - Channel 2 capture/compare
13.6.8
DSM Mode
Timer 1 also contains a 1-bit Delta-Sigma
Modulator (DSM) of second order that can be
used to produce a mono audio output PWM
signal. The DSM removes the need for high
order external filtering required when using
regular PWM mode.
The DSM operates at a fixed speed of either
1/4 or 1/8 of the timer tick speed set by
CLKCON.TICKSPD. The DSM speed is set by
T1CCTL1.MODE. The input samples are
updated at a configurable sampling rate set by
the terminal count value T1CC0.
An interpolator is used to match the sampling
rate with the DSM update rate. This
interpolator is of first order with a scaling
compensation. The scaling compensation is
due to variable gain defined by the difference
in sampling speed and DSM speed. This
interpolation mechanism can be disabled by
setting
T1CCTL1.CAP=10
or
T1CCTL1.CAP=11, thus using a zeroth order
interpolator.
In addition to the interpolator, a shaper can be
used to account for differences in rise/fall times
in the output signal. Also the shaper is
enabled/disabled using the two CAP bits in the
T1CCTL1 register. This shaper ensures a
rising and a falling edge per bit and will thus
limit the output swing to 1/8 to 7/8 of I/O VDD
when the DSM operates at 1/8 of the timer tick
speed or 1/4 to 3/4 of I/O VDD when the DSM
operates at 1/4 of the timer tick speed.
The DSM is used as in PWM mode where the
terminal count value T1CC0 defines the
period/sampling rate. The DSM can not use
the Timer 1 prescaler to further slow down the
period.
Timer 1 must be configured to operate in
modulo mode (T1CTL.MODE=10) and channel
0 must be configured to compare mode
(T1CCTL0.MODE=1).
The terminal count
value T1CC0, held in the registers
T1CC0H:T1CC0L, defines the sample rate.
Table 53 shows some T1CC0 settings for
different
sample
rates
(CLKCON.TICKSPD=000).
SWRS033F
Page 119 of 242
CC1110Fx / CC1111Fx
Sample Rate
T1CC0H
T1CC0L
8 kHz @ 24 MHz
0x0B
0xB7
8 kHz @ 26 MHz
0x0C
0xB1
16 kHz @ 24 MHz
0x05
0xDB
16 kHz @ 26 MHz
0x06
0x59
48 kHz @ 24 MHz
0x01
0xF3
48 kHz @ 26 MHz
0x02
0x1D
64 kHz @ 24 MHz
0x01
0x76
64 kHz @ 26 MHz
0x01
0x96
Table 53: Channel 0 Period Setting for some Sampling Rates (CLKCON.TICKSPD=000)
Since the DSM starts immediately after DSM
mode has been enabled by setting
T1CCTL1.CMP=111, all configuration should
have been performed prior to enabling DSM
mode. Also, the Timer 1 counter should be
cleared and started just before starting the
DSM operation (all write accesses to the
T1CNTL register will reset the 16-bit counter
while writing a value other than 00 to
T1CTL.MODE will start the counter). A simple
procedure for setting up DSM mode should
then be as follows:
1. Suspend timer 1 (T1CTL.MODE=00)
2. Clear timer counter by writing any value
to T1CNTL, (CNT=0x0000)
On each Timer 1 IRQ or Timer 1 DMA trigger,
write a new sample to the T1CC1H:T1CC1L
registers. The least significant bits must be
written to T1CC1L before the most significant
bits are written to T1CC1H.
The samples written must be signed 2’s
complement values. The 2 least significant bits
will always be treated as 0, thus the effective
sample size is 14 bits.
13.6.9
Timer 1 Registers
This section describes the following Timer 1
registers:
• T1CNTH - Timer 1 Counter High
3. Set the sample rate by writing to T1CC0.
• T1CNTL - Timer 1 Counter Low
4. Set Timer 1 channel 0 compare mode
(T1CCTL0.MODE=1)
• T1CTL - Timer 1 Control and Status
• T1CCTLn - Timer 1
Capture/Compare Control
5. Load first sample if available (or zero if
no
sample
available)
into
T1CC1H:T1CC1L.
6. Set timer operation to modulo mode
(T1CTL.MODE=10)
7. Configure the DSM by setting the MODE
and CAP fields of the T1CCTL1 register.
8. Enable
DSM
(T1CCTL1.CMP=111)
mode
Channel
n
• T1CCnH - Timer 1 Channel
Capture/Compare Value High
n
• T1CCnL
Timer
1
Channel
Capture/Compare Value Low
n
The TIMIF register is described in Section
13.9.7.
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Page 120 of 242
CC1110Fx / CC1111Fx
T1CNTH (0xE3) - Timer 1 Counter High
Bit
Name
Reset
R/W
Description
7:0
CNT[15:8]
0x00
R
Timer count high order byte. Contains the high byte of the 16-bit timer
counter buffered at the time T1CNTL is read.
T1CNTL (0xE2) - Timer 1 Counter Low
Bit
Name
Reset
R/W
Description
7:0
CNT[7:0]
0x00
R/W
Timer count low order byte. Contains the low byte of the 16-bit timer counter.
Writing anything to this register results in the counter being cleared to
0x0000.
T1CTL (0xE4) - Timer 1 Control and Status
Bit
Name
Reset
R/W
Description
7
CH2IF
0
R/W0
Timer 1 channel 2 interrupt flag
6
5
4
3:2
CH1IF
CH0IF
OVFIF
DIV[1:0]
0
0
0
00
R/W0
R/W0
R/W0
R/W
0
No interrupt pending
1
Interrupt pending
Timer 1 channel 1 interrupt flag
0
No interrupt pending
1
Interrupt pending
Timer 1 channel 0 interrupt flag
0
No interrupt pending
1
Interrupt pending
Timer 1 counter overflow interrupt flag. Set when the counter reaches the
terminal count value in free-running or modulo mode or when counter turns
around on zero in up/down mode
0
No interrupt pending
1
Interrupt pending
Prescaler divider value. Generates the active clock edge used to update the
counter as follows:
00
Tick frequency/1
01
Tick frequency/8
10
Tick frequency/32
11
Tick frequency/128
Note: The prescaler counter is not reset when writing these bits, hence one
prescaler period may be needed before updated data is used.
1:0
MODE[1:0]
00
R/W
Timer 1 mode select. The timer operating mode is selected as follows:
00
Operation is suspended
01
Free-running, repeatedly count from 0x0000 to 0xFFFF
10
Modulo, repeatedly count from 0x0000 to T1CC0
11
Up/down, repeatedly count from 0x0000 to T1CC0 and from T1CC0
down to 0x0000
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Page 121 of 242
CC1110Fx / CC1111Fx
T1CCTL0 (0xE5) - Timer 1 Channel 0 Capture/Compare Control
Bit
Name
Reset
R/W
Description
7
CPSEL
0
R/W
Timer 1 channel 0 capture select
6
5:3
IM
CMP[2:0]
1
000
R/W
R/W
0
Use normal capture input
1
Use RF event(s) enabled in the RFIM register to trigger a capture
Channel 0 interrupt mask
0
Interrupt disabled
1
Interrupt enabled
Channel 0 compare mode select. Selects action on output when timer value
equals compare value in T1CC0
000
2
1:0
MODE
CAP[1:0]
0
00
R/W
R/W
Set output on compare
001
Clear output on compare
010
Toggle output on compare
011
Set output on compare-up, clear on 0 (clear on compare-down in
up/down mode)
100
Clear output on compare-up, set on 0 (set on compare-down in
up/down mode)
101
Reserved
110
Reserved
111
Reserved
Mode. Select Timer 1 channel 0 capture or compare mode
0
Capture mode
1
Compare mode
Channel 0 capture mode select
00
No capture
01
Capture on rising edge
10
Capture on falling edge
11
Capture on both edges
T1CC0H (0xDB) - Timer 1 Channel 0 Capture/Compare Value High
Bit
Name
Reset
R/W
Description
7:0
T1CC0[15:8]
0x00
R/W
Timer 1 channel 0 capture/compare value, high order byte.
Set the DSM sample rate in DSM mode
T1CC0L (0xDA) - Timer 1 Channel 0 Capture/Compare Value Low
Bit
Name
Reset
R/W
7:0
T1CC0[7:0]
0x00
R/W
Description
Timer 1 channel 0 capture/compare value, low order byte
Set the DSM sample rate in DSM mode
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Page 122 of 242
CC1110Fx / CC1111Fx
T1CCTL1 (0xE6) - Timer 1 Channel 1 Capture/Compare Control
Bit
Name
Reset
R/W
Description
7
CPSEL
0
R/W
Timer 1 channel 1 capture select
6
5:3
IM
CMP[2:0]
1
000
R/W
R/W
0
Use normal capture input
1
Use RF event(s) enabled in the RFIM register to trigger a capture
Channel 1 interrupt mask
0
Interrupt disabled
1
Interrupt enabled
Channel 1 compare mode select. Selects action on output when timer value equals
compare value in T1CC1
000
2
1:0
MODE
CAP[1:0]
0
00
R/W
Set output on compare
001
Clear output on compare
010
Toggle output on compare
011
Set output on compare-up, clear on 0 (clear on compare-down in up/down
mode)
100
Clear output on compare-up, set on 0 (set on compare-down in up/down
mode)
101
Set when equal to T1CC1, clear when equal to T1CC0
110
Clear when equal to T1CC1, set when equal to T1CC0
111
DSM mode enable
CMP ≠ 111
CMP = 111
Select Timer 1 channel 1 capture
or compare mode
Set the DSM speed
0
Capture mode
1/8 of timer tick speed
1
Compare mode
1/2 of timer tick speed
Channel 1 capture mode
select (timer mode)
DSM interpolator and output shaping
configuration (DSM mode)
00
No capture
DSM interpolator and output shaping
enabled
01
Capture on rising edge
DSM interpolator enabled and output
shaping disabled
10
Capture on falling edge
DSM interpolator disabled and output
shaping enabled
11
Capture on both edges
DSM interpolator and output shaping
disabled
R/W
T1CC1H (0xDD) - Timer 1 Channel 1 Capture/Compare Value High
Bit
Name
Reset
R/W
Description
7:0
T1CC1[15:8]
0x00
R/W
Timer 1 channel 1 capture/compare value, high order byte
DSM data high order byte (DSM mode)
T1CC1L (0xDC) - Timer 1 Channel 1 Capture/Compare Value Low
Bit
Name
Reset
R/W
Description
7:0
T1CC1[7:0]
0x00
R/W
Timer 1 channel 1 capture/compare value, low order byte
DSM data low order byte. The two least significant bits are not used. (DSM mode)
SWRS033F
Page 123 of 242
CC1110Fx / CC1111Fx
T1CCTL2 (0xE7) - Timer 1 Channel 2 Capture/Compare Control
Bit
Name
Reset
R/W
Description
7
CPSEL
0
R/W
Timer 1 channel 2 capture select
6
5:3
IM
CMP[2:0]
1
000
R/W
R/W
0
Use normal capture input
1
Use RF event(s) enabled in the RFIM register to trigger a capture
Channel 2 interrupt mask
0
Interrupt disabled
1
Interrupt enabled
Channel 2 compare mode select. Selects action on output when timer value
equals compare value in T1CC2
000
2
1:0
MODE
CAP[1:0]
0
00
R/W
R/W
Set output on compare
001
Clear output on compare
010
Toggle output on compare
011
Set output on compare-up, clear on 0 (clear on compare-down in
up/down mode)
100
Clear output on compare-up, set on 0 (set on compare-down in
up/down mode)
101
Set when equal to T1CC2, clear when equal to T1CC0
110
Clear when equal to T1CC2, set when equal to T1CC0
111
Not used
Mode. Select Timer 1 channel 2 capture or compare mode
0
Capture mode
1
Compare mode
Channel 2 capture mode select
00
No capture
01
Capture on rising edge
10
Capture on falling edge
11
Capture on both edges
T1CC2H (0xDF) - Timer 1 Channel 2 Capture/Compare Value High
Bit
Name
Reset
R/W
Description
7:0
T1CC2[15:8]
0x00
R/W
Timer 1 channel 2 capture/compare value, high order byte
T1CC2L (0xDE) - Timer 1 Channel 2 Capture/Compare Value Low
Bit
Name
Reset
R/W
Description
7:0
T1CC2[7:0]
0x00
R/W
Timer 1 channel 2 capture/compare value, low order byte
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Page 124 of 242
CC1110Fx / CC1111Fx
13.7 MAC Timer (Timer 2)
The MAC timer is designed for slot timing
operations used by the MAC layer in an RF
protocol. The timer includes a highly tunable
prescaler allowing the user to select a timer
interval that equals, or is an integer fraction of,
a transmission slot.
• 8-bit timer
the 18 bit counter and thus set the maximum
value.
The timer 2 interval / time slot, T, can be given
as:
T = T2PR · Val(T2CTL.TIP)/ timer tick speed,
where the function Val(x) is set by T2CTL.TIP
and defined as
• 18-bit tunable prescaler
Val(00) = 64
13.7.1
Timer Operation
Val(01) = 128
This section describes the operation of the
timer.
The timer count can be read from the T2CT
SFR. At each active clock edge, the timer
count is decremented by one. When the timer
count reaches 0x00, the register bit
T2CTL.TEX is set to 1. When T2CTL.TIG=0,
the timer will not wrap around when the timer
count reaches 0x00. When T2CTL.TIG=1,
timer count will wrap around and start counting
down from 0xFF.
If T2CTL.INT=1, IRCON.T2IF will also be
asserted when T2CTL.TEX is set to 1. An
interrupt request will be generated if both
T2CTL.INT and IEN1.T2IE are set to 1.
When a new value is written to the timer count
register, T2CT, this value is stored in the
counter immediately. If an active clock edge
and a write to T2CT occur at the same time,
the written value will be decremented before it
is stored.
Val(10) = 256
Val(11) = 1024
Example:
T2PR = 0x09
T2CTL.TIP = 10
CLKCON.TICKSPD = 101 (812.5 kHz @ when
fxosc = 26 MHz)
T = 9 · 256 / 812.5 kHz = 2.84 ·10-3 s
13.7.2
Timer 2 DMA Trigger
There is one DMA trigger associated with
Timer 2. This is the DMA trigger T2_OVFL,
which is generated when T2CTL.TEX is set to
1.
13.7.3
Timer 2 Registers
The SFRs associated with Timer 2 are listed in
this section. These registers are the following:
The 18 bit prescaler is controlled by:
• T2CTL - Timer 2 Control
• T2PR - Timer 2 Prescaler
• T2CT - Timer 2 Count
• Timer tick speed (CLKCON.TICKSPD)
• T2CTL.TIP
• Prescaler value (T2PR)
All events in timer 2 are aligned to timer tick
speed
given
by
CLKCON.TICKSPD.
T2CTL.TIP defines how fast the prescaler
counter counts up towards its maximum value
where it is reset and starts over again. The
prescaler value, T2PR, defines the 8 MSB of
SWRS033F
Note: These registers will be in their reset
state when returning to active mode from
PM2 and PM3.
Page 125 of 242
CC1110Fx / CC1111Fx
T2CTL (0x9E) - Timer 2 Control
Bit
Name
7
6
TEX
5
4
INT
3
2
1:0
TIG
TIP[1:0]
Reset
R/W
Description
0
R/W
0
Reserved
0
R/W
0
This bit is set to 1 when the timer count reaches 0x00. Writing a 1 to this bit has no
effect
0
R/W
Reserved. Always set to 0.
0
R/W
Timer 2 Interrupt enable
0
Interrupt enabled
1
Interrupt disabled
0
R/W
Reserved. Always set to 0
0
R/W
Tick generator mode
00
R/W
0
Tick generator is running when T2CT not equal to 0x00. The tick generator will
always start running form its null state.
1
Tick generator is in free-running mode. If it is not already running it will start
from its null state when this bit is set to 1
This value is used to calculate the timer 2 interval / time slot, T
T = T2PR · Val(T2CTL.TIP)/ timer tick speed,
00
64
01
128
10
256
11
1024
T2CT (0x9C) - Timer 2 Count
Bit
Name
Reset
R/W
Description
7:0
CNT[7:0]
0x00
R/W
Timer count. Contents of 8-bit counter.
T2PR (0x9D) - Timer 2 Prescaler
Bit
Name
Reset
R/W
Description
7:0
PR[7:0]
0x00
R/W
Timer prescaler multiplier. 0x00 is interpreted as 256
SWRS033F
Page 126 of 242
CC1110Fx / CC1111Fx
13.8 Sleep Timer
The Sleep Timer is used to control when the
CC1110Fx/CC1111Fx exits from PM{0 - 2} and
hence the Sleep Timer can be used to
implement a wake up functionality which
enables CC1110Fx/CC1111Fx to periodically wake
up to active mode and listen for incoming RF
packets.
13.8.1
t Event 0 =
If the 32.768 kHz crystal oscillator is used to
clock the Sleep Timer, tEvent0 is calculated as
follows:
t Event 0 =
Sleep Timer Operation
This section describes the operation of the
timer.
Note: In this section of the document, fRef is
used to denote the reference frequency for
the synthesizer.
For CC1110Fx fref=fXOS and for
750
⋅ EVENT 0 ⋅ 25⋅WOR _ RES
f ref
1
⋅ EVENT 0 ⋅ 25⋅WOR _ RES
32768
The time from the CC1110Fx/CC1111Fx enters
PM2 until the next Event 0 is programmed to
appear (tSLEEPmin) should be larger than 11.08
ms when fref is 26 MHz and 12 ms when fref is
24 MHz (Sleep Timer clocked by the low
power RC oscillator).
t SLEEPmin =
CC1111Fx, f ref = f XOSC
2
When referring to the low power RCOSC,
calibrated values are assumed
The Sleep Timer consists of a 31-bit counter.
The appropriate bits of this counter are
selected according to a resolution setting
determined by the WORCTRL.WOR_RES
register bits. The Sleep Timer is either clocked
by the 32.768 kHz crystal oscillator or by the
low power RC oscillator (fref / 750). The timer
can only be used in PM0, PM1, and PM2.
The Sleep Timer has a programmable timing
event called Event 0. While in PM0, PM1, or
PM2, reaching Event 0 will make the
CC1110Fx/CC1111Fx enter active mode.
The time between two consecutive Event 0’s
(tEvent0) is programmed with a mantissa value
given
by
WOREVT1.EVENT0
and
WOREVT0.EVENT0, and an exponent value set
by WORCTRL.WOR_RES. When using the low
power RC oscillator to clock the Sleep Timer,
tEvent0 is given by:
750
⋅ 384
f ref
When the Sleep Timer is clocked by the
32.768 kHz crystal oscillator, tSLEEPmin = 11.72
ms (384/32768).
13.8.2
Sleep Timer and Power Modes
Entering PM{0 - 2} has to be aligned to a
positive edge on the 32 kHz clock source.
There has to be at least two positive edges on
the 32 kHz clock source between
WORCTRL.WOR_RESET being asserted and
updating EVENT0 or entering PM{0 - 2}.
If EVENT0 is to be updated to a value lower
than
current
time
value,
WORCTRL.WOR_RESET has to be asserted
first.
The following code examples should be used
in order to update EVENT0 and entering
PM{0 - 2} correctly:
// Alignment of entering PM2 to a positive edge on the 32 kHz clock source
// and updating Event0 to a value higher than current timer value
char temp = WORTIME0;
while(temp == WORTIME0);
// Wait until a positive 32 kHz edge
WOREVT1 = desired event0;
// Set Event0, high byte
WOREVT0 = desired event0;
// Set Event0, low byte
PCON |= 0x01;
// Enter PM
SWRS033F
Page 127 of 242
CC1110Fx / CC1111Fx
// Reset timer and align the entering of PM2 to a positive edge on the 32 kHz
// clock source. Update Event0 to a value lower than current time value
WORCTRL |= 0x04;
// Reset Sleep Timer
char temp = WORTIME0;
while(temp == WORTIME0);
// Wait until a positive 32 kHz edge
temp = WORTIME0;
while(temp == WORTIME0);
// Wait until a positive 32 kHz edge
WOREVT1 = desired event0;
// Set Event0, high byte
WOREVT0 = desired event0;
// Set Event0, low byte
PCON |= 0x01;
// Enter PM
13.8.3
Low Power RC Oscillator and Timing
This section applies to using the low power RC
oscillator as clock source for the Sleep Timer.
The frequency of the low-power RC oscillator,
which can be used as clock source for the
Sleep Timer, varies with temperature and
supply voltage. In order to keep the frequency
as accurate as possible, the RC oscillator
should be calibrated whenever possible, which
is when the high speed crystal oscillator is
running and the chip is in active mode or PM0.
When the chip goes to PM1 or PM2, the RC
oscillator will use the last valid calibration
result. The frequency of the low power RC
oscillator is therefore locked to fref / 750.
13.8.4
set in the WORIRQ register, the CPU interrupt
flag IRCON.STIF will also be asserted in
addition to the interrupt flag in WORIRQ. If
IEN0.STIE=1
when
IRCON.STIF
is
asserted, and ST interrupt request will be
generated.
Note: All port interrupts are blocked when
SLEEP.MODE≠00
13.8.5
There is one DMA trigger associated with the
Sleep Timer. This is the DMA trigger ST,
which is generated when Event 0 occurs.
13.8.6
Sleep Timer Interrupt
When
Event
0
occurs,
the
WORIRQ.EVENT0_FLAG bit will be asserted. If
the corresponding mask bit, EVENT0_MASK, is
Sleep Timer DMA Trigger
Sleep Timer Registers
This section describes the SFRs associated
with the Sleep Timer.
WORTIME0 (0xA5) - Sleep Timer Low Byte
Bit
Name
Reset
R/W
Description
7:0
WORTIME[7:0]
0x00
R
8 LSB of the16 bits selected from the 31-bit Sleep Timer according to the
setting of WORCTRL.WOR_RES[1:0]
WORTIME1 (0xA6) - Sleep Timer High Byte
Bit
Name
Reset
R/W
Description
7:0
WORTIME[15:8]
0x00
R
8 MSB of the16 bits selected from the 31-bit Sleep Timer according to the
setting of WORCTRL.WOR_RES[1:0]
WOREVT1 (0xA4) - Sleep Timer Event0 Timeout High
Bit
Name
Reset
R/W
Description
7:0
EVENT0[15:8]
0x87
R/W
High byte of Event 0 timeout register
Sleep Timer clocked by low power
RCOSC
t Event 0 =
750
⋅ EVENT 0 ⋅ 25⋅WOR _ RES
f ref
SWRS033F
Sleep Timer clocked by 32.768 kHz
crystal oscillator
t Event0 =
1
⋅ EVENT 0 ⋅ 25⋅WOR _ RES
32768
Page 128 of 242
CC1110Fx / CC1111Fx
WOREVT0 (0xA3) - Sleep Timer Event0 Timeout Low
Bit
Name
Reset
R/W
Description
7:0
EVENT0[7:0]
0x6B
R/W
Low byte of Event 0 timeout register
WORCTRL (0xA2) - Sleep Timer Control
Bit
Name
Reset
R/W
Description
7
-
R0
Not used
6:4
111
R/W
Reserved. Always write 000
3
-
R0
Not used
2
WOR_RESET
0
R0/W1
Reset timer. The timer will be reset to 4.
1:0
WOR_RES[1:0]
00
R/W
Sleep Timer resolution
Controls the resolution and maximum timeout for the Sleep Timer.
Adjusting the resolution does not affect the clock cycle counter:
Setting
Resolution (1 LSB)
Bits selected from the 31-bit Sleep
Timer
00
1 period
15:0
01
5
20:5
10
25:10
15
30:15
2 periods
10
2 periods
11
2 periods
WORIRQ (0xA1) - Sleep Timer Interrupt Control
Bit
Reset
R/W
7:6
00
R0
5
0
R/W
Reserved. Always write 0
0
R/W
Event 0 interrupt mask
4
Name
EVENT0_MASK
Description
0
Interrupt is disabled
1
Interrupt is enabled
3:2
00
R0
1
0
R/W0
Reserved
0
R/W0
Event 0 interrupt flag
0
EVENT0_FLAG
0
No interrupt is pending
1
Interrupt is pending
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Page 129 of 242
CC1110Fx / CC1111Fx
13.9 8-bit Timers, Timer 3 and Timer 4
Timer 3 and Timer 4 are two 8-bit timers which
supports typical timer/counter functions such
as output compare and PWM functions. The
timers have two independent compare
channels each and use one I/O pin per
channel.
highest is 24 MHz for CC1111Fx. When the high
speed RC oscillator is used as system clock
source, the highest clock frequency used by
Timer 3/4 is fXOSC/2 for CC1110Fx and 12 MHz
for CC1111Fx, given that the HS RCOSC has
been calibrated.
The features of Timer 3/4 are as follows:
The counter operates as either a free-running
counter, a modulo counter, a down counter, or
as an up/down counter for use in centrealigned PWM.
• Two compare channels
• Set, clear, or toggle output compare
• Free-running,
modulo,
down,
up/down counter operation
or
It is possible to read the 8-bit counter value
through the SFR TxCNT.
• Clock prescaler for divide by 1, 2, 4, 8,
16, 32, 64, 128
Writing a 1 to TxCTL.CLR will reset the 8-bit
counter.
• Interrupt request generation on compare
and when reaching the terminal count
value
The counter may produce an interrupt request
when the terminal count value (overflow) is
reached (see Section 13.9.2.1 - 13.9.2.4). It is
possible to start and halt the counter with the
TxCTL.START bit. The counter is started
when a 1 is written to TxCTL.START. If a 0 is
written to TxCTL.START, the counter halts at
its present value.
• DMA trigger function
Note: In the following sections, an n in the
register name represent the channel
number 0 or 1 if nothing else is stated. An
x in the register name refers to the timer
number, 3 or 4
13.9.1
13.9.2
8-bit Timer Counter
Both timers consist of an 8-bit counter that
increments or decrements at each active clock
edge. The frequency of the active clock edges
is
given
by
CLKCON.TICKSPD
and
TxCTL.DIV. CLKCON.TICKSPD is used to set
the timer tick speed. The timer tick speed will
vary from 203.125 kHz to 26 MHz for CC1110Fx
and 187.5 kHz to 24 MHz for CC1111Fx (given
the use of a 26 MHz or 48 MHz crystal
respectively). Note that the clock speed of the
system clock is not affected by the TICKSPD
setting. The timer tick speed is further divided
in Timer 3/4 by the prescaler value set by
TxCTL.DIV. This prescaler value can be 1,
2, 4, 8, 16, 32, 64, or 128. Thus the lowest
clock frequency used by Timer 3/4 is 1.587
kHz and the highest is 26 MHz when a 26
MHz crystal oscillator is used as system clock
source (CC1110Fx). The lowest clock frequency
used by Timer 3/4 is 1.465 kHz and the
Timer 3/4 Operation
In general, the control register TxCTL is used
to control the timer operation. The timer
modes are described in the following four
sections.
13.9.2.1
Free-running Mode
In free-running mode the counter starts from
0x00 and increments at each active clock
edge. When the counter reaches the terminal
count value 0xFF (overflow), the counter is
loaded with 0x00 on the next timer tick and
continues incrementing its value as shown in
Figure 35. When 0xFF is reached, the
TIMIF.TxOVFIF
flag
is
set.
The
IRCON.TxIF flag is only asserted if the
corresponding
interrupt
mask
bit
TxCTL.OVFIM is set. An interrupt request is
generated when both TxCTL.OVFIM and
IEN1.TxEN are set to 1. The free-running
mode can be used to generate independent
time intervals and output signal frequencies.
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Page 130 of 242
CC1110Fx / CC1111Fx
0xFF
0x00
OVFIF = 1
OVFIF = 1
Figure 35: Free-running Mode
13.9.2.2
Modulo Mode
TIMIF.TxOVFIF
flag
is
set.
The
IRCON.TxIF flag is only asserted if the
corresponding
interrupt
mask
bit
TxCTL.OVFIM is set. An interrupt request is
generated when both TxCTL.OVFIM and
IEN1.TxEN are set to 1. Modulo mode can be
used for applications where a period other
than 0xFF is required.
In modulo mode the counter starts from 0x00
and increments at each active clock edge.
When the counter reaches the terminal count
value TxCC0 (overflow), the counter is loaded
with 0x00 on the next timer tick and continues
incrementing its value as shown in Figure 36.
When
TxCC0
is
reached,
the
TxCC0
0x00
OVFIF = 1
OVFIF = 1
Figure 36: Modulo Mode
13.9.2.3
Down Mode
IRCON.TxIF
is only asserted if the
corresponding
interrupt
mask
bit
TxCTL.OVFIM is set. An interrupt request is
generated when both TxCTL.OVFIM and
IEN1.TxEN are set to 1. The timer down
mode can generally be used in applications
where an event timeout interval is required.
In down mode, after the timer has been
started, the counter is loaded with the contents
in TxCC0. The counter then counts down to
0x00 (terminal count value) and remains at
0x00 as shown in Figure 37. The flag
TIMIF.TxOVFIF is set when 0x00 is reached.
TxCC0
0x00
OVFIF = 1
Figure 37: Down Mode
13.9.2.4
Up/Down Mode
In up/down mode the counter starts from 0x00
and increments at each active clock edge.
When the counter value matches the terminal
count value TxCC0, the counter counts down
until 0x00 is reached and it starts counting up
again as shown in Figure 38. When 0x00 is
reached, the TIMIF.TxOVFIF flag is set. The
IRCON.TxIF flag is only asserted if the
corresponding
interrupt
mask
bit
TxCTL.OVFIM is set. An interrupt request is
generated when both TxCTL.OVFIM and
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Page 131 of 242
CC1110Fx / CC1111Fx
and therefore allows implementation of centrealigned PWM output applications.
IEN1.TxEN are set to 1. The up/down mode
can be used when symmetrical output pulses
are required with a period other than 0xFF,
TxCC0
0x00
OVFIF = 1
OVFIF = 1
Figure 38: Up/Down Mode
13.9.3
13.9.5
Channel Mode Control
The channel mode is set with each channel’s
control and status register TxCCTLn.
Note: before an I/O pin can be used by the
timer, the required I/O pin must be
configured as a Timer 3/4 peripheral pin as
described in section 13.4.6 on Page 64.
13.9.4
Timer 3 and 4 Interrupts
There is one interrupt vector assigned to each
of the timers. These are T3 and T4 (interrupt
#11 and #12, see Table 39). The following
timer events may generate an interrupt
request:
• Counter reaches terminal count value
(overflow) or turns around on zero /
reach zero
Output Compare Mode
• Output compare event
In output compare mode the I/O pin
associated with a channel is set as an output.
After the timer has been started, the contents
of the counter are compared with the contents
of the channel compare register TxCCn. If the
compare register equals the counter contents,
the output pin is set, reset, or toggled
according to the compare output mode setting
of TxCCTLn.CMP. Note that all edges on
output pins are glitch-free when operating in a
given compare output mode. Writing to the
compare register TxCC0 does not take effect
on the output compare value until the counter
value is 0x00. Writing to the compare register
TxCC1 takes effect immediately.
When a compare occurs, the interrupt flag for
the appropriate channel (TIMIF.TxCHnIF) is
asserted. The IRCON.TxIF flag is only
asserted if the corresponding interrupt mask
bit TxCCTLn.IM is set to 1. An interrupt
request is generated if the corresponding
interrupt mask bit is set together with
IEN1.TxEN. When operating in up-down
mode, the interrupt flag for channel 0 is set
when the counter reaches 0x00 instead of
when a compare occurs.
The
register
bits
TIMIF.T3OVFIF,
TIMIF.T4OVFIF,
TIMIF.T3CH0IF,
TIMIF.T3CH1IF, TIMIF.T4CH0IF, and
TIMIF.T4CH1IF contains the interrupt flags
for the two terminal count value event
(overflow), and the four channel compare
events, respectively. These flags will be
asserted regardless off the channel n interrupt
mask bit (TxCCTLn.IM). The CPU interrupt
flag, IRCON.TxIF will only be asserted if one
or more of the channel n interrupt mask bits
are set to 1. An interrupt request is only
generated when the corresponding interrupt
mask bit is set together with IEN1.TxEN. The
interrupt mask bits are T3CCTL0.IM,
T3CCTL1.IM, T4CCTL0.IM, T4CCTL1.IM,
T3CTL.OVFIM, and T4CTL.OVFIM. Note that
enabling an interrupt mask bit will generate a
new interrupt request if the corresponding
interrupt flag is set.
When the timer is used in Free-running Mode
or Modulo Mode the interrupt flags are set as
follows:
For simple PWM use, output compare modes
3 and 4 are preferred.
SWRS033F
• TIMIF.TxCH0IF
and
TIMIF.TxCH1IF are set on compare
event
• TIMIF.TxOVFIF is set when counter
reaches terminal count value (overflow)
Page 132 of 242
CC1110Fx / CC1111Fx
• T3_CH0: Timer 3 channel 0 compare
When the timer is used in Down Mode the
interrupt flags are set as follows:
• T3_CH1: Timer 3 channel 1 compare
• TIMIF.TxCH0IF
and
TIMIF.TxCH1IF are set on compare
event
• TIMIF.TxOVFIF is set when counter
reaches zero
When the timer is used in Up/Down Mode the
interrupt flags are set as follows:
• T4_CH0: Timer 4 channel 0 compare
• T4_CH1: Timer 4 channel 1 compare
13.9.7
This section describes the following Timer 3
and Timer 4 registers:
• TIMIF.TxCH0IF
and
TIMIF.TxOVFIF are set when the
counter turns around on zero
• TIMIF.TxCH1IF is set on compare
event
In addition, the CPU interrupt flag,
IRCON.TxIF will be asserted if the channel n
interrupt mask bit (TxCCTLn.IM) is set to 1.
13.9.6
Timer 3 and 4 Registers
• T3CNT - Timer 3 Counter
• T3CTL - Timer 3 Control
• T3CCTLn - Timer 3 Channel n Compare
Control
• T3CCn - Timer 3 Channel n Compare
Value
• T4CNT - Timer 4 Counter
• T4CTL - Timer 4 Control
Timer 3 and Timer 4 DMA Triggers
There are two DMA triggers associated with
Timer 3 and two DMA triggers associated with
Timer 4. These are DMA triggers T3_CH0,
T3_CH1, T4_CH0, and T4_CH1, which are
generated on timer compare events as follows:
• T4CCTLn - Timer 4 Channel n Compare
Control
• T4CCn - Timer 4 Channel n Compare
Value
• TIMIF - Timer 1/3/4 Interrupt Mask/Flag
T3CNT (0xCA) - Timer 3 Counter
Bit
Name
Reset
R/W
Description
7:0
CNT[7:0]
0x00
R
Timer count byte. Contains the current value of the 8-bit counter
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CC1110Fx / CC1111Fx
T3CTL (0xCB) - Timer 3 Control
Bit
Name
Reset
R/W
Description
7:5
DIV[2:0]
000
R/W
Prescaler divider value. Generates the active clock edge used to update the
counter as follows:
000
Tick frequency /1
001
Tick frequency /2
010
Tick frequency /4
011
Tick frequency /8
100
Tick frequency /16
101
Tick frequency /32
110
Tick frequency /64
111
Tick frequency /128
Note: Changes to these bits has immediate effect on the frequency of the active
clock edges.
4
3
2
START
OVFIM
CLR
0
1
0
R/W
R/W0
R0/W1
Start timer
0
Suspended
1
Normal operation
Overflow interrupt mask
0
Interrupt disabled
1
Interrupt enabled
Clear counter. Writing a 1 resets the counter to 0x00.
This bit will be 0 when returning from PM2 and PM3
1:0
MODE[1:0]
00
R/W
Timer 3 mode select. The timer operating mode is selected as follows:
00
Free running, repeatedly count from 0x00 to 0xFF
01
Down, count from T3CC0 to 0x00
10
Modulo, repeatedly count from 0x00 to T3CC0
11
Up/down, repeatedly count from 0x00 to T3CC0 and from T3CC0 down
to 0x00
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CC1110Fx / CC1111Fx
T3CCTL0 (0xCC) - Timer 3 Channel 0 Compare Control
Bit
Name
7
6
5:3
IM
CMP[2:0]
Reset
R/W
Description
-
R0
Not used
1
R/W
Channel 0 interrupt mask
000
R/W
0
Interrupt disabled
1
Interrupt enabled
Channel 0 compare output mode select. Specified action on output when timer value
equals compare value in T3CC0
000
2
MODE
1:0
0
00
R/W
R/W
Set output on compare
001
Clear output on compare
010
Toggle output on compare
011
Set output on compare-up, clear on 0 (clear on compare-down in up/down
mode)
100
Clear output on compare-up, set on 0 (set on compare-down in up/down
mode)
101
Set output on compare, clear on 0xFF
110
Clear output on compare, set on 0x00
111
Not used
Timer 3 channel 0 compare mode enable
0
Disable
1
Enable
Reserved. Always write 00
T3CC0(0xCD) - Timer 3 Channel 0 Compare Value
Bit
Name
Reset
R/W
Description
7:0
VAL[7:0]
0x00
R/W
Timer 3 channel 0 compare value
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Page 135 of 242
CC1110Fx / CC1111Fx
T3CCTL1 (0xCE) - Timer 3 Channel 1 Compare Control
Bit
Name
7
6
5:3
IM
CMP[2:0]
Reset
R/W
Description
-
R0
Not used
1
R/W
Channel 1 interrupt mask
000
R/W
0
Interrupt disabled
1
Interrupt enabled
Channel 1 compare output mode select. Specified action on output when timer value
equals compare value in T3CC1
000
2
MODE
1:0
0
00
R/W
R/W
Set output on compare
001
Clear output on compare
010
Toggle output on compare
011
Set output on compare-up, clear on 0 (clear on compare-down in up/down
mode)
100
Clear output on compare-up, set on 0 (set on compare-down in up/down
mode)
101
Set output on compare, clear on T3CC0
110
Clear output on compare, set on T3CC0
111
Not used
Timer 3 channel 1 compare mode enable
0
Disable
1
Enable
Reserved. Always write 00
T3CC1 (0xCF) - Timer 3 Channel 1 Compare Value
Bit
Name
Reset
R/W
Description
7:0
VAL[7:0]
0x00
R/W
Timer 3 channel 1 compare value
T4CNT (0xEA) - Timer 4 Counter
Bit
Name
Reset
R/W
Description
7:0
CNT[7:0]
0x00
R
Timer count byte. Contains the current value of the 8-bit counter
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Page 136 of 242
CC1110Fx / CC1111Fx
T4CTL (0xEB) - Timer 4 Control
Bit
Name
Reset
R/W
Description
7:5
DIV[2:0]
000
R/W
Prescaler divider value. Generates the active clock edge used to update the
counter as follows:
000
Tick frequency /1
001
Tick frequency /2
010
Tick frequency /4
011
Tick frequency /8
100
Tick frequency /16
101
Tick frequency /32
110
Tick frequency /64
111
Tick frequency /128
Note: Changes to these bits has immediate effect on the frequency of the active
clock edges.
4
3
2
START
OVFIM
CLR
0
1
0
R/W
R/W0
R0/W1
Start timer
0
Suspended
1
Normal operation
Overflow interrupt mask
0
Interrupt disabled
1
Interrupt enabled
Clear counter. Writing a 1 resets the counter to 0x00.
This bit will be 0 when returning from PM2 and PM3
1:0
MODE[1:0]
00
R/W
Timer 4 mode select. The timer operating mode is selected as follows:
00
Free running, repeatedly count from 0x00 to 0xFF
01
Down, count from T4CC0 to 0x00
10
Modulo, repeatedly count from 0x00 to T4CC0
11
Up/down, repeatedly count from 0x00 to T4CC0 and from T4CC0 down to
0x00
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CC1110Fx / CC1111Fx
T4CCTL0 (0xEC) - Timer 4 Channel 0 Compare Control
Bit
Name
7
6
5:3
IM
CMP[2:0]
Reset
R/W
Description
-
R0
Not used
1
R/W
Channel 0 interrupt mask
000
R/W
0
Interrupt disabled
1
Interrupt enabled
Channel 0 compare output mode select. Specified action on output when timer value
equals compare value in T4CC0
000
2
MODE
1:0
0
00
R/W
R/W
Set output on compare
001
Clear output on compare
010
Toggle output on compare
011
Set output on compare-up, clear on 0 (clear on compare-down in up/down
mode)
100
Clear output on compare-up, set on 0 (set on compare-down in up/down
mode)
101
Set output on compare, clear on 0xFF
110
Clear output on compare, set on 0x00
111
Not used
Timer 4 channel 0 compare mode enable
0
Disable
1
Enable
Reserved. Always write 00
T4CC0 (0xED) - Timer 4 Channel 0 Compare Value
Bit
Name
Reset
R/W
Description
7:0
VAL[7:0]
0x00
R/W
Timer 4 channel 0 compare value
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Page 138 of 242
CC1110Fx / CC1111Fx
T4CCTL1 (0xEE) - Timer 4 Channel 1 Compare Control
Bit
Name
7
6
5:3
IM
CMP[2:0]
Reset
R/W
Description
-
R0
Not used
1
R/W
Channel 0 interrupt mask
000
R/W
0
Interrupt disabled
1
Interrupt enabled
Channel 0 compare output mode select. Specified action on output when timer value
equals compare value in T4CC0
000
2
MODE
1:0
0
00
R/W
R/W
Set output on compare
001
Clear output on compare
010
Toggle output on compare
011
Set output on compare-up, clear on 0 (clear on compare-down in up/down
mode)
100
Clear output on compare-up, set on 0 (set on compare-down in up/down
mode)
101
Set output on compare, clear on T4CC0
110
Clear output on compare, set on T4CC0
111
Not used
Timer 4 channel 1 compare mode enable
0
Disable
1
Enable
Reserved. Always write 00
T4CC1 (0xEF) - Timer 4 Channel 1 Compare Value
Bit
Name
Reset
R/W
Description
7:0
VAL[7:0]
0x00
R/W
Timer 4 channel 1 compare value
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Page 139 of 242
CC1110Fx / CC1111Fx
TIMIF (0xD8) - Timers 1/3/4 Interrupt Mask/Flag
Bit
Name
7
6
5
4
3
2
1
0
OVFIM
T4CH1IF
T4CH0IF
T4OVFIF
T3CH1IF
T3CH0IF
T3OVFIF
Reset
R/W
-
R0
Not used
1
R/W
Timer 1 overflow interrupt mask
0
0
0
0
0
0
R/W0
R/W0
R/W0
R/W0
R/W0
R/W0
Description
0
Interrupt disabled
1
Interrupt enabled
Timer 4 channel 1 interrupt flag. Writing a 1 has no effect
0
No interrupt is pending
1
Interrupt is pending
Timer 4 channel 0 interrupt flag. Writing a 1 has no effect
0
No interrupt is pending
1
Interrupt is pending
Timer 4 overflow interrupt flag. Writing a 1 has no effect
0
No interrupt is pending
1
Interrupt is pending
Timer 3 channel 1 interrupt flag. Writing a 1 has no effect
0
No interrupt is pending
1
Interrupt is pending
Timer 3 channel 0 interrupt flag. Writing a 1 has no effect
0
No interrupt is pending
1
Interrupt is pending
Timer 3 overflow interrupt flag. Writing a 1 has no effect
0
No interrupt is pending
1
Interrupt is pending
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Page 140 of 242
CC1110Fx / CC1111Fx
13.10
ADC
• Eight individual input channels, singleended or differential (CC1111Fx has only
six channels)
13.10.1 ADC Introduction
The ADC supports up to 12-bit analog-todigital conversion. The ADC includes an
analog multiplexer with up to eight individually
configurable channels, reference voltage
generator, and conversion results written to
memory through DMA. Several modes of
operation are available. All references to VDD
applies to voltage on the pin AVDD.
• Reference
voltage
selectable
as
internal, external single ended, external
differential, or VDD.
The main features of the ADC are as follows:
• Temperature sensor input
• Interrupt request generation
• DMA triggers at end of conversions
• Selectable decimation rates which also
sets the resolution (7 to 12 bits).
• Battery measurement capability
Figure 39: ADC Block Diagram
13.10.2 ADC Operation
This section describes the general setup and
operation of the ADC and describes the usage
of the ADC control and status registers
accessed by the CPU.
13.10.2.1 ADC Core
The ADC is capable of converting an analog
input into a digital representation with up to 12
bits resolution. The ADC uses a selectable
positive reference voltage.
13.10.2.2 ADC Inputs
The signals on the P0 port pins can be used as
ADC inputs.
Note: P0_6 and P0_7 do not exist on
CC1111Fx, hence only six input channels are
available (AIN0 - AIN5)
To configure a P0 pin to be used as an ADC
input the corresponding bit in the ADCCFG
register must be set to 1. The default value in
this register disables the ADC inputs. Please
see Section 13.4.7 on Page 94 for more details
on how to configure the ADC input pins. In the
following these port pin will be referred to as
the AIN0 - AIN7 pins. The ADC can be set up
to automatically perform a sequence of
conversions and optionally perform an extra
conversion.
It is possible to configure the inputs as singleended or differential inputs. In the case where
differential inputs are selected, the differential
inputs consist of the input pairs AIN0 - AIN1,
AIN2 - AIN3, AIN4 - AIN5, and AIN6 - AIN7.
Note that neither a negative supply, nor a
supply larger than VDD (unregulated power)
can be applied to these pins. It is the
difference between the pairs that are
converted in differential mode.
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Page 141 of 242
CC1110Fx / CC1111Fx
In addition to the input pins AIN0 - AIN7, the
output of an on-chip temperature sensor can
be selected as an input to the ADC for
temperature measurements.
It is also possible to select a voltage
corresponding to VDD/3 as an ADC input. This
input allows the implementation of e.g. a
battery monitor in applications where this
feature is required.
13.10.2.3 ADC Conversion Sequences
The ADC will perform a sequence of
conversions, and the results can be moved to
memory (through DMA) without any interaction
from the CPU.
The ADCCON1.EOC bit is a status bit that is set
high when a conversion ends and cleared
when ADCH is read.
The ADCCON1.ST bit is used to start a
sequence of conversions. A sequence will start
when
this
bit
is
set
high,
ADCCON1.STSEL=11, and no conversion is
currently running. When the sequence is
completed, this bit is automatically cleared.
The ADCCON1.STSEL bits select which event
that will start a new sequence of conversions.
The options which can be selected are rising
edge on external pin P2_0, end of previous
sequence, a Timer 1 channel 0 compare
event, or ADCCON1.ST is 1.
ADCCON2.SREF is used to select the reference
voltage. The reference voltage should only be
changed when no conversion is running.
The ADCCON2.SCH register bits are used to
define an ADC conversion sequence from the
ADC inputs. If some of the inputs in this
sequence are not configured to be analog
input signals in the ADCCFG register, these will
be skipped. For differential inputs both input
pins must be configured to be analog input
signals.
The ADCCON2.SDIV bits select the decimation
rate (and thereby also the resolution and time
required to complete a conversion and sample
rate). The decimation rate should only be
changed when no conversion is running.
• 0000 ≤ ADCCON2.SCH ≤ 0111: Singleended inputs
The ADCCON2.SCH register bits are used to
define an ADC conversion sequence.
• 1000 ≤ ADCCON2.SCH
Differential inputs
≤
1011:
• 1100 ≤ ADCCON2.SCH ≤ 1111: GND,
internal voltage reference, temp. sensor,
and VDD/3
When ADCCON2.SCH is set to a value less
than 1000 a conversion sequence will contain
a conversion from each ADC input, starting at
AIN0 and ending at the input programmed in
ADCCON2.SCH. When ADCCON2.SCH is set to
a value ranging from 1000 to 1011, the
sequence will start at the differential input pair
(AIN0 - AIN1) and stop at the input pair given
by ADCCON2.SCH. For even higher settings,
only single conversions are performed. In
addition to this sequence of conversions, the
ADC can be programmed to perform a single
conversion (see next section).
The ADC can be programmed to perform a
single conversion (single-ended, differential,
GND, internal voltage reference, temperature
sensor, or VDD/3). This is called an extra
conversion and is controlled with the ADCCON3
register. This conversion is triggered by writing
to ADCCON3. If this register is written while the
ADC is running, the conversion will take place
as soon as the sequence has completed. If the
register is written while the ADC is not running,
the conversion will take place immediately
after the ADCCON3 register is updated.
The ADCCON3 register controls which input to
use, reference voltage, and decimation rate for
the extra conversion. The coding of the
register bits is exactly as for ADCCON2.
Note: If a sequence of conversions is
started without setting any of the P0 pins
as analog inputs, ADCCON2.SCH and
ADCCON1.EOC will still be updated, as if
the conversions had taken place.
13.10.2.4 ADC Operating Modes
This section describes the operating modes
and initialization of conversions.
The ADC has three control registers:
ADCCON1, ADCCON2, and ADCCON3. These
registers are used to configure the ADC and to
report status.
13.10.2.5 ADC Reference Voltage
The positive reference voltage for analog-todigital conversions is selectable as either an
internally generated 1.25 V voltage, VDD on
the AVDD pin, an external voltage applied to
the AIN7 input pin, or a differential voltage
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Page 142 of 242
CC1110Fx / CC1111Fx
applied to the AIN6 - AIN7 inputs (AIN6 must
have the highest input voltage). It is possible to
select the reference voltage as the input to the
ADC in order to perform a conversion of the
reference voltage e.g. for calibration purposes.
Similarly, it is possible to select the ground
terminal GND as an input.
Note: P0_6 and P0_7 do not exist on
CC1111Fx, hence it is not possible to use
external voltage reference for the ADC on
the CC1111Fx.
13.10.2.6 ADC Conversion Results
The digital conversion result is represented in
two's complement form. For single ended
configurations the result is always positive (the
result is the difference between ground and the
input signal AINn, where n is 0, 1, 2, …, 7) and
will be a value between 0 and 2047. The
maximum value is reached when the input
amplitude is equal VREF, the selected voltage
reference. For differential configurations the
difference between two pin pairs are converted
and this difference can be negatively signed.
For 12-bit resolution the digital conversion
result is 2047 when the analog input is equal to
VREF, and the conversion result is –2048
when the analog input is equal to –VREF.
The digital conversion result is available in
ADCH and ADCL when ADCCON1.EOC is set to
1. Note that the conversion result always
resides in MSB section of ADCH:ADCL.
When reading the ADCCON2.SCH bits, the
number returned will indicate what the last
conversion was. Notice that when the value
written to ADCCON2.SCH is less than 1100, the
number returned will be the number written +
1.
For example, after a sequence of
conversions from AIN0 to AIN4 has completed,
ADCCON2.SCH will be read as 0101, while
after a single conversion of the temperature
sensor has completed, the register field will be
read as 1110 (same as the value written to it).
If an extra conversion has been initiated by
writing to ADCCON3.ECH, ADCCON2.SCH will
be updated, after the conversion has
completed, with the same value as written to
ADCCON3.ECH, even if this value was less
than 1100.
clock divided by 6 to give a 4.33/4 MHz ADC
clock. Both the delta-sigma modulator and the
decimation filter use the ADC clock for their
calculations. Using other frequencies will affect
the results, and conversion time. All data
presented within this data sheet assume the
use of the high speed crystal oscillator.
The time required to perform a conversion
depends on the selected decimation rate.
When, for instance, the decimation rate is set
to 128, the decimation filter uses exactly 128
ADC clock periods to calculate the result.
When a conversion is started, the input
multiplexer is allowed 16 ADC clock periods to
settle in case the channel has been changed
since the previous conversion. The 16 clock
cycles settling time applies to all decimation
rates. This means that the conversion time,
Tconv, is given by:
Tconv = (decimation rate + 16) x T where
0.22 µs ≤ T ≤ 0.23 µs for CC1110Fx, depending
on the frequency of the high speed crystal
oscillator
T = 0.25 µs for CC1111Fx
13.10.2.8 ADC Interrupts
The ADC will only generate an interrupt when
an extra conversion has completed.
13.10.2.9 ADC DMA Triggers
DMA triggers 20 - 28 are associated with
single-ended
or
differential
conversion
sequences (ADCCON2.SCH ≤ 1100). The ADC
will generate a DMA trigger event when a new
sample is ready from a conversion in the
sequence. The same is the case if a single
conversion is completed (ADCCON2.SCH ≥
1100). Be aware that DMA trigger number 27
and 28 are shared with the I2S module.
In addition there is one DMA trigger,
ADC_CHALL, which is active when new data
is ready from any of the conversions in the
ADC conversion sequence and from the single
conversion defined by ADCCON2.SCH. A
completion of an extra conversion will not
generate a trigger event.
The DMA triggers are listed in Table 51 on age
107.
13.10.2.7 ADC Conversion Timing
The high speed crystal oscillator should be
selected as system clock when the ADC is
used and CLKCON.CLKSPD should be 000.
The ADC runs on a clock which is the system
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CC1110Fx / CC1111Fx
13.10.3 ADC Registers
This section describes the ADC registers.
ADCL (0xBA) - ADC Data Low
Bit
Name
Reset
R/W
Description
7:4
ADC[3:0]
0000
R
Least significant part of ADC conversion result. The decimation rate
configures through ADCCON2.SDIV determines how many of these bits are
relevant to use.
0000
R
3:0
ADCH (0xBB) - ADC Data High
Bit
Name
Reset
R/W
Description
7:0
ADC[11:4]
0x00
R
Most significant part of ADC conversion result. The decimation rate configures
through ADCCON2.SDIV determines how many of these bits are relevant to
use.
ADCCON1 (0xB4) - ADC Control 1
Bit
Name
Reset
R/W
Description
7
EOC
0
R
End of conversion. Cleared when ADCH has been read. If a new conversion
is completed before the previous data has been read, the EOC bit will remain
high.
H0
6
5:4
3:2
1:0
ST
STSEL[1:0]
RCTRL[1:0]
0
11
00
11
R/W1
R/W
R/W
R/W
0
Conversion not complete
1
Conversion completed
Start conversion. Read as 1 until conversion has completed
0
No conversion in progress
1
Start a conversion sequence if ADCCON1.STSEL=11 and no
sequence is running.
Start select. Selects which event that will start a new conversion sequence.
00
External trigger on P2_0 pin.
01
Full speed. Do not wait for triggers.
10
Timer 1 channel 0 compare event
11
ADCCON1.ST=1
Controls the 16 bit random generator. When set to 01, the setting will
automatically return to 00 when operation has completed.
00
Normal (13x unrolling) or operation completed
01
Clock the LFSR once (no unrolling).
10
Reserved
11
Stopped. Random generator is turned off.
Reserved. Always write 11
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ADCCON2 (0xB5) - ADC Control 2
Bit
Name
Reset
R/W
Description
7:6
SREF[1:0]
00
R/W
Selects reference voltage used for the sequence of conversions
5:4
3:0
SDIV[1:0]
SCH[3:0]
01
00
R/W
R/W
00
Internal 1.25V reference
01
External reference on AIN7 pin (only CC1110Fx)
10
VDD on the AVDD pin
11
External reference on AIN6 - AIN7 differential input (only CC1110Fx)
Sets the decimation rate for channels included in the sequence of
conversions. The decimation rate also determines the resolution and time
required to complete a conversion.
00
64 dec rate (7 bits resolution)
01
128 dec rate (9 bits resolution)
10
256 dec rate (10 bits resolution)
11
512 dec rate (12 bits resolution)
Sequence Channel Select. Selects the end of the sequence.
SCH ≤ 0111: A conversion sequence will contain a conversion from each
ADC input, starting at AIN0 and ending at the input programmed in
ADCCON2.SCH.
1000 ≤ SCH ≤ 1011: The sequence will start at the differential input pair
(AIN0 - AIN1) and stop at the input pair given by ADCCON2.SCH.
SCH ≥ 1100: Only single conversions are performed.
When reading the ADCCON2.SCH bits, the number returned will indicate what
the last conversion was. Please see Section 13.10.2.6 for details.
0000
AIN0
0001
AIN1
0010
AIN2
0011
AIN3
0100
AIN4
0101
AIN5
0110
AIN6
0111
AIN7
1000
AIN0 - AIN1
1001
AIN2 - AIN3
1010
AIN4 - AIN5
1011
AIN6 - AIN7
1100
GND
1101
Positive voltage reference
1110
Temperature sensor
1111
VDD/3
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ADCCON3 (0xB6) - ADC Control 3
Bit
Name
Reset
R/W
Description
7:6
EREF[1:0]
00
R/W
Selects reference voltage used for the extra conversion
5:4
3:0
EDIV[1:0]
ECH[3:0]
00
0000
R/W
R/W
00
Internal 1.25V reference
01
External reference on AIN7 pin (only CC1110Fx)
10
VDD on the AVDD pin
11
External reference on AIN6 - AIN7 differential input (only CC1110Fx)
Sets the decimation rate used for the extra conversion. The decimation rate
also determines the resolution and time required to complete the conversion.
00
64 dec rate (7 bits resolution)
01
128 dec rate (9 bits resolution)
10
256 dec rate (10 bits resolution)
11
512 dec rate (12 bits resolution)
Extra channel select. An extra conversion will be triggered by writing to these
bits. If they are written while the ADC is running, the conversion will take
place as soon as the sequence has completed. If the bits are written while
the ADC is not running, the conversion will take place immediately after this
register has been updated.
The bits are automatically cleared when the extra conversion has finished.
0000
AIN0
0001
AIN1
0010
AIN2
0011
AIN3
0100
AIN4
0101
AIN5
0110
AIN6
0111
AIN7
1000
AIN0 - AIN1
1001
AIN2 - AIN3
1010
AIN4 - AIN5
1011
AIN6 - AIN7
1100
GND
1101
Positive voltage reference
1110
Temperature sensor
1111
VDD/3
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CC1110Fx / CC1111Fx
13.11
Random Number Generator
The random number generator is a 16-bit
Linear Feedback Shift Register (LFSR) with
13.11.1 Introduction
The random number
following features.
generator
has
the
• Generate pseudo-random bytes which
can be read by the CPU.
polynomial X + X + X + 1 (i.e. CRC16).
It uses different levels of unrolling depending
on the operation it performs. The basic version
(no unrolling) is shown below.
• Calculate CRC16 of bytes that are
written to RNDH.
The random number generator is turned off
when ADCCON1.RCTRL=11.
16
15
2
• Seeded by value written to RNDL.
15
in_bit
+
14
13
12
11
10
9
8
7
6
5
4
3
2
+
1
0
+
Figure 40: Basic Structure of the Random Number Generator
13.11.2 Random
Operation
Number
Generator
The operation of the random number generator
is controlled by the ADCCON1.RCTRL bits. The
current value of the 16-bit shift register in the
LFSR can be read from the RNDH and RNDL
registers.
13.11.2.1 Semi Random Sequence
Generation
The default operation (ADCCON1.RCTRL=00)
is to clock the LSFR once (13x unrolling) thus
give a new pseudo-random byte from LSB of
the LSFR each time the RNDL register is read.
Another way is to update the LFSR is to set
ADCCON1.RCTRL=01. This will clock the LFSR
once (no unrolling) and the ADCCON1.RCTRL
bits will automatically be cleared when the
operation has completed.
13.11.2.2 Seeding
The LFSR can be seeded by writing to the
RNDL register twice. Each time the RNDL
register is written, the 8 LSB of the LFSR is
copied to the 8 MSB and the 8 LSBs are
replaced with the new data byte that was
written to RNDL.
13.11.2.3 CRC16
The LFSR can also be used to calculate the
CRC value of a sequence of bytes. Writing to
the RNDH register will trigger a CRC
calculation. The new byte is processed from
the MSB end and an 8x unrolling is used, so
that a new byte can be written to RNDH every
clock cycle.
Note that the LFSR must be properly seeded
by writing to RNDL twice, before the CRC
calculations start. Usually the seed value
should be 0x0000 or 0xFFFF. Using 0xFFFF
as seed value will give the CRC used by the
radio.
For the following byte sequence:
0x03, 0x41, 0x42, 0x43
The CRC will be 0xB4BC when using 0xFFFF
as seed value.
13.11.3 Registers
The random number generator registers are
described in this section.
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RNDL (0xBC) - Random Number Generator Data Low Byte
Bit
Name
Reset
R/W
[7:0]
RNDL[7:0]
0xFF
R/W
Description
Random value/seed or CRC result, low byte
When used for random number generation writing this register twice will
seed the random number generator. Writing to this register copies the 8
LSBs of the LFSR to the 8 MSBs and replaces the 8 LSBs with the data
value written.
The value returned when reading from this register is the 8 LSBs of the
LSFR.
When used for random number generation, reading this register returns the 8
LSBs of the random number. When used for CRC calculations, reading this
register returns the 8 LSBs of the CRC result.
RNDH (0xBD) - Random Number Generator Data High Byte
Bit
Name
Reset
R/W
Description
[7:0]
RNDH[7:0]
0xFF
R/W
Random value or CRC result/input data, high byte
When written, a CRC16 calculation will be triggered, and the data value
written is processed starting with the MSB bit.
The value returned when reading from this register is the 8 MSBs of the
LSFR.
When used for random number generation, reading this register returns the 8
MSBs of the random number. When used for CRC calculations, reading this
register returns the 8 MSBs of the CRC result.
13.12
AES Coprocessor
The CC1110Fx/CC1111Fx data encryption is
performed using a dedicated coprocessor
which supports the Advanced Encryption
Standard, AES. The coprocessor allows
encryption/decryption to be performed with
minimal CPU usage.
The coprocessor has the following features:
• ECB, CBC, CFB, OFB, CTR, and
CBC- MAC modes.
• Hardware support for CCM mode
• DMA transfer trigger capability
following
The IV must be downloaded before the
beginning of each message (not block).
Both key and IV are cleared by a reset of the
device and when PM2 or PM3 are entered.
• Load key
• Load initialization vector (IV)/nonce
• Download and upload
encryption/decryption.
Before a key or IV/nonce load starts, an
appropriate load key or IV/nonce command
must be issued to the coprocessor. When
loading the IV it is important to also set the
correct mode.
The key, once loaded, stays valid until a key
reload takes place.
13.12.1 AES Operation
the
13.12.2 Key and IV
A key load or IV load operation aborts any
processing that could be running.
• 128-bits key and IV/Nonce
To encrypt a message,
procedure must be followed:
block can be processed. Before each block
load, a dedicated start command must be
sent to the coprocessor.
data
13.12.3 Padding of Input Data
for
The AES coprocessor works on blocks of
128 bits. A block of data is loaded into the
coprocessor, encryption is performed, and
the result must be read out before the next
AES works on blocks of 128 bits. If a block
contains less than 128 bits, it must be
padded with zeros when written to the
coprocessor.
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CC1110Fx / CC1111Fx
13.12.4 Interface to CPU
The
CPU
communicates
coprocessor using three SFRs:
with
the
• ENCCS, Encryption control and status
register
• ENCDI, Encryption input register
• ENCDO, Encryption output register
Read/write to the control and status register
is done by the CPU, while read/write the
output/input registers is intended for use
together with direct memory access (DMA).
When using DMA, one channel is used for
input data and one for output data. The DMA
channels must be initialized before a start
command is written to the ENCCS. Writing a
start command generates a DMA trigger and
the transfer is started. After each block is
processed, the interrupt flag, S0CON.ENCIF,
is asserted, and an interrupt request
generated if IEN0.ENCIE is set to 1. The
interrupt is used to issue a new start
command to the ENCCS.
13.12.5 Modes of Operation
ECB and CBC modes are performed as
described in Section 13.12.1
When using CFB, OFB, and CTR mode, the
128 bits blocks are divided into four 32 bit
blocks. 32 bits are loaded into the AES
coprocessor and the resulting 32 bits are
read out. This continues until all 128 bits
have been encrypted. The only time one has
to consider this is if data is loaded/read
directly using the CPU. When using DMA,
this is handled automatically by the DMA
triggers generated by the AES coprocessor,
thus DMA is preferred.
Both encryption and
performed similarly.
are
The CBC-MAC mode is a variant of the CBC
mode. When performing CBC-MAC, data is
downloaded to the coprocessor one 128 bits
block at a time, except for the last block.
Before the last block is loaded, the mode
must be changed to CBC. The last block is
then downloaded and the block uploaded will
be the MAC value. CBC-MAC decryption is
similar to encryption. The message MAC
uploaded must be compared with the MAC
to be verified.
13.12.6 AES Interrupts
The AES interrupt flag, S0CON.ENCIF, is
asserted when encryption or decryption of a
block is completed. An interrupt request is
generated if IEN0.ENCIE is set to 1
13.12.7 AES DMA Triggers
There are two DMA triggers associated with
the AES coprocessor. These are ENC_DW,
which is active when input data needs to be
downloaded to the ENCDI register, and
ENC_UP, which is active when output data
needs to be uploaded from the ENCDO
register.
The ENCDI and ENCDO registers should be
set as destination and source locations for
DMA channels used to transfer data to or
from the AES coprocessor.
13.12.8 AES Registers
The AES coprocessor registers are
described below. These registers will be in
their reset state when returning to active
mode from PM2 and PM3.
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ENCCS (0xB3) - Encryption Control and Status
Bit
Name
7
6:4
3
2:1
MODE[2:0]
RDY
CMD[1:0]
Reset
R/W
0
R0
Not used
000
R/W
Encryption/decryption mode
1
0
R
R/W
Description
000
CBC
001
CFB
010
OFB
011
CTR
100
ECB
101
CBC MAC
110
Reserved
111
Reserved
Encryption/decryption ready status
0
Encryption/decryption in progress
1
Encryption/decryption is completed
Command to be performed when a 1 is written to ST.
00
0
ST
0
R/W1
H0
encrypt block
01
decrypt block
10
load key
11
load IV/nonce
Start processing command set by CMD. Must be issued for each command or
128 bits block of data. Cleared by hardware
ENCDI (0xB1) - Encryption Input Data
Bit
Name
Reset
R/W
Description
7:0
DIN[7:0]
0x00
R/W
Encryption input data.
ENCDO (0xB2) - Encryption Output Data
Bit
Name
Reset
R/W
Description
7:0
DOUT[7:0]
0x00
R/W
Encryption output data.
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13.13
Watchdog Timer
The watchdog timer (WDT) is intended as a
recovery method in situations where the
software hangs. The WDT shall reset the
system when software fails to clear the WDT
within a selected time interval. The watchdog
can be used in applications where high
reliability is required. If the watchdog
function is not needed in an application, it is
possible to configure the watchdog timer to
be used as an interval timer that can be
used to generate interrupts at selected time
intervals.
The features of the watchdog timer are as
follows:
• Four selectable timer intervals
• Watchdog mode
• Timer mode
• Interrupt request generation in timer
mode
• Clock independent from system clock
The operation of the WDT module is
controlled by the WDCTL register. The
watchdog timer consists of a 15-bit counter
clocked by the one of the low speed
oscillators. Note that the content of the 15-bit
counter is not user-accessible. The content
of the 15-bit counter is reset to 0x0000 when
a PM2 or PM3 is entered.
13.13.1 Watchdog Mode
The watchdog timer is disabled after a
system reset. To set the WDT in watchdog
mode the WDCTL.MODE bit must be set to 0.
The watchdog timer counter starts
incrementing when the enable bit WDCTL.EN
is set to 1. When the timer is enabled in
watchdog mode it is not possible to disable
the timer. Therefore, writing a 0 to
WDCTL.EN has no effect if a 1 was already
written to this bit when WDCTL.MODE was 0.
The WDT operates with a watchdog timer
clock frequency of 32.768 kHz (low speed
crystal oscillator) or 32 - 36 kHz (calibrated
low power RC oscillator). The timer interval
depend on the count value settings (64, 512,
8192, and 32768 respectively) configured in
WDCTL.INT.
If the counter reaches the selected timer
interval value (watchdog timeout), the
watchdog timer generates a reset signal for
the system. If a watchdog clear sequence is
performed before the counter reaches the
selected timer interval value, the counter is
reset to 0x0000 and continues incrementing
its value. The watchdog clear sequence
consists
of
writing
1010
to
WDCTL.CLR[3:0] followed by writing 0101
to the same register bits within one half of a
watchdog clock period. If this complete
sequence is not performed, the watchdog
timer generates a reset signal for the
system. Note that as long as a correct
watchdog clear sequence begins within the
selected timer interval, the counter is reset
when the complete sequence has been
received.
When the watchdog timer has been enabled
in watchdog mode, it is not possible to
change the mode by writing to the
WDCTL.MODE bit. The timer interval value
can be changed by writing to the
WDCTL.INT[1:0] bits.
Note that a change in the timer interval
value should be followed by a clearing of
the watchdog timer to avoid an unwanted
watchdog reset.
In watchdog mode, the WDT does not
produce an interrupt request.
13.13.2 Timer Mode
To set the WDT in normal timer mode, the
WDCTL.MODE bit is set to 1. When register
bit WDCTL.EN is set to 1, the timer is started
and the counter starts incrementing. When
the counter reaches the selected interval
value, the IRCON2.WDTIF flag is asserted
and an interrupt request is generated if
watchdog timer interrupt is enabled
(IEN2.WDTIE=1).
In timer mode, it is possible to clear the timer
contents by writing a 1 to WDCTL.CLR[0].
When the timer is cleared the contents of the
counter is set to 0x0000. The timer is
stopped by setting WDCTL.EN=0 and
restarted
from
0x000
by
setting
WDCTL.EN=1.
The timer interval is set by the
WDCTL.INT[1:0] bits. In timer mode, a
reset will not be produced when the timer
interval value is reached.
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CC1110Fx / CC1111Fx
the watchdog timer must be cleared before
the counter expires.
13.13.3 Watchdog Mode and Power Modes
In active mode and PM0 the WDT runs and
resets the chip upon timeout. To avoid reset,
Power Mode
Comments
PM1
The WDT runs but does not reset the chip upon timeout. If active mode is entered just as the timer
expires, the chip will be reset immediately, hence the WDT needs to be cleared regularly (before
timeout) also when in PM1.
PM2 and PM3
The WDT is disabled and reset, and the configuration is retained. The counter will start from 0x0000
when active mode is entered from PM2 or PM3
Table 54: Watchdog Mode and Power Modes
13.13.4 Watchdog Timer Register
WDCTL (0xC9) - Watchdog Timer Control
Bit
Name
Reset
R/W
Description
7:4
CLR[3:0]
0000
R/W
Clear timer. When 1010 followed by 0101 is written to these bits, the counter is reset to
0x0000. Note that the watchdog will only be cleared when 0101 is written within 0.5
watchdog clock period after 1010 was written. Writing to these bits when EN is 0 has no
effect.
3
EN
0
R/W
Enable timer. When a 1 is written to this bit the timer is enabled and starts
incrementing. Writing a 0 to this bit in timer mode stops the timer. Writing a 0 to this bit
in watchdog mode has no effect.
2
1:0
MODE
INT[1:0]
0
00
R/W
R/W
0
Timer disabled
1
Timer enabled
Mode select.
0
Watchdog mode
1
Timer mode
Timer interval select. These bits select the timer interval defined as a given number of
low speed oscillator periods.
Timer interval
# of periods
32.768 kHz crystal
oscillator
32 kHz RCOSC
34.667 kHz RCOSC
(calibrated,
CC1111Fx)
(calibrated, CC1110Fx
running @ 26 MHz)
00
32768
1s
1.024 s
0.945 s
01
8192
0.25 s
0.256 s
0.236 s
10
512
15.625 ms
16 ms
14.769 ms
11
64
1.953 ms
2 ms
1.846 ms
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13.14
USART
USART0
and
USART1
are
serial
communications interfaces that can be
operated separately in either asynchronous
UART mode or in synchronous SPI mode. The
two USARTs are identical in functionality but
are assigned to separate I/O pins. Refer to
Section 13.4 on Page 90 for I/O configuration.
13.14.1 UART Mode
For asynchronous serial interfaces, the UART
mode is provided. In UART mode the interface
uses a two-wire or four-wire interface
consisting of the pins RXD and TXD, and
optionally RTS and CTS. The UART mode
includes the following features:
• 8 or 9 data bits
• Odd, even, or no parity
• Configurable start and stop bit level
• Configurable LSB or MSB first transfer
• Independent
interrupts
receive
and
transmit
• Independent receive and transmit DMA
triggers
• Parity and framing error status
The UART mode provides full duplex
asynchronous
transfers
and
the
synchronization of bits in the receiver does not
interfere with the transmit function. A UART
byte transfer consists of a start bit, eight data
bits, an optional ninth data or parity bit, and
one or two stop bits. Note that the data
transferred is referred to as a byte, although
the data can actually consist of eight or nine
bits.
The UART operation is controlled by the
USART x Control and Status registers, UxCSR,
and the USART x UART Control register,
UxUCR, where x is the USART number, 0 or 1.
The UART mode is
UxCSR.MODE is set to 1.
selected
when
13.14.1.1 UART Transmit
A UART transmission is initiated when the
USART
Receive/Transmit
Data
Buffer,
UxDBUF register is written. The byte is
transmitted on the TXDx output pin. The
UxDBUF register is double-buffered.
The UxCSR.ACTIVE bit goes high when the
byte transmission starts and low when it ends.
When
the
transmission
ends,
the
UxCSR.TX_BYTE bit is set to 1. The USARTx
TX
complete
CPU
interrupt
flag
(IRCON2.UTXxIF) is asserted when the
UxDBUF register is ready to accept new
transmit data, and an interrupt request is
generated if IEN2.UTXxIE=1. This happens
immediately after the transmission has been
started, hence a new data byte value can be
loaded into the data buffer while the byte is
being transmitted.
13.14.1.2 UART Receive
Data reception on the UART is initiated when a
1 is written to the UxCSR.RE bit. The UART
will then search for a valid start bit on the
RXDx input pin and set the UxCSR.ACTIVE bit
high. When a valid start bit has been detected
the received byte is shifted into the receive
register. The UxCSR.RX_BYTE bit and the
CPU interrupt flag, TCON.URXxIF, is set to 1
when the operation has completed and an
interrupt
request
is
generated
if
IEN0.URXxIE=1.
At
the
same
time
UxCSR.ACTIVE will go low.
The received data byte is available through the
UxDBUF register. When UxDBUF is read,
UxCSR.RX_BYTE is cleared by hardware.
13.14.1.3 UART Hardware Flow Control
Hardware flow control is enabled when the
UxUCR.FLOW bit is set to 1. The RTS output
will then be driven low when the receive
register is empty and reception is enabled.
Transmission of a byte will not occur before
the CTS input go low.
13.14.1.4 UART Character Format
If the BIT9 and PARITY bits in register UxUCR
are set high, parity generation and detection is
enabled. The parity is computed and
transmitted as the ninth bit, and during
reception, the parity is computed and
compared to the received ninth bit. If there is a
parity error, the UxCSR.ERR bit is set high.
This bit is cleared when UxCSR is read.
The number of stop bits to be transmitted is set
to one or two bits determined by the register bit
UxUCR.SPB. The receiver will always check for
one stop bit. If the first stop bit received during
reception is not at the expected stop bit level, a
framing error is signaled by setting register bit
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CC1110Fx / CC1111Fx
UxCSR.FE high. UxCSR.FE is cleared when
UxCSR is read. The receiver will check both
stop bits when UxUCR.SPB=1. Note that the
USARTx RX complete CPU interrupt flag,
TCON.URXxIF, and the UxCSR.RX_BYTE bit
will be asserted when the first stop bit is
checked OK. If the second stop bit is not OK,
the framing error bit, UxCSR.FE, will be
asserted. This means that this bit is updated 1
bit duration later than the 2 other above
mentioned bits. The UxCSR.ACTIVE bit will be
de-asserted after the second stop bit (if
UxUCR.SPB=1).
13.14.2 SPI Mode
This section describes the SPI mode of
operation for synchronous communication. In
SPI mode, the USART communicates with an
external system through a 3-wire or 4-wire
interface. The interface consists of the pins
MOSI, MISO, SCK and SSN. Refer to Section
13.4 on Page 90 for I/O configuration.
The SPI mode includes the following features:
• 3-wire (master) and 4-wire SPI interface
• Master and slave modes
At the end of the transfer, the USARTx RX
complete CPU interrupt flag, TCON.URXxIF, is
asserted and the received data byte is
available in UxDBUF. An interrupt request is
generated if IEN0.URXxIE=1
Since UxDBUF
is double-buffered, the
assertion of the USARTx TX complete CPU
interrupt flag (IRCON2.UTXxIF) happens just
after a transmission has been initiated, and is
therefore not safe to use. Instead, the
assertion of the UxCSR.TX_BYTE bit should be
used as an indication on when new data can
be written to UxDBUF. For DMA transfers this
is handled automatically, but with the limitation
that the UxGDR.CPHA bit must be set to zero.
For
systems
requiring
setting
UxGDR.CPHA=1, the DMA can not be used.
Also note that the USARTx TX complete
interrupt occurs approximately 1 byte period
prior to the USARTx RX complete interrupt.
In SPI master mode, only the MOSI, MISO,
and SCK should be configured as peripherals
(see Section 13.4.6.1 and 13.4.6.2). If the
external slave requires a slave select signal
(SSN) this can be implemented by using a
general-purpose I/O pin and control from SW.
• Configurable SCK polarity and phase
13.14.2.2 SPI Slave Operation
• Configurable LSB or MSB first transfer
The SPI mode is selected when UxCSR.MODE
is set to 0.
In SPI mode, the USART can be configured to
operate either as an SPI master or as an SPI
slave by setting UxCSR.SLAVE to 0 or 1,
recpectively.
13.14.2.1 SPI Master Operation
An SPI byte transfer in master mode is initiated
when the UxDBUF register is written. The
USART generates the SCK signal using the
baud rate generator (see Section 13.14.3) and
shifts the provided byte from the transmit
register onto the MOSI output. At the same
time the receive register shifts in the received
byte from the MISO input pin.
The polarity and clock phase of the serial clock
SCK is selected by UxGCR.CPOL and
UxGCR.CPHA. The order of the byte transfer is
selected by the UxGCR.ORDER bit.
The UxCSR.ACTIVE bit goes high when the
transfer starts and low when the transfer ends.
When the transfer ends, the UxCSR.TX_BYTE
bit is set to 1.
An SPI byte transfer in slave mode is
controlled by the external system. The data on
the MOSI input is shifted into the receive
register controlled by the serial clock SCK,
which is an input in slave mode. At the same
time the byte in the transmit register is shifted
out onto the MISO output.
The UxCSR.ACTIVE bit goes high when the
transfer starts and low when the transfer ends.
When the transfer ends, the UxCSR.RX_BYTE
bit is set to 1
At the end of the transfer, the USARTx RX
complete CPU interrupt flag, TCON.URXxIF, is
asserted and the received data byte is
available in UxDBUF. An interrupt request is
generated if IEN0.URXxIE=1. The USARTx
TX
complete
CPU
interrupt
flag,
IRCON2.UTXxIF, is asserted at the start of
the operation and an interrupt request is
generated if IEN2.UTXxIE=1.
The expected polarity and clock phase of SCK
is selected by UxGCR.CPOL and UxGCR.CPHA
as shown in Figure 41. The expected order of
the byte transfer is selected by the
UxGCR.ORDER bit.
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CC1110Fx / CC1111Fx
13.14.2.3 Slave Select pin (SSN)
When the USART is operating in SPI slave
mode, a 4-wire interface is used with the Slave
Select (SSN) pin as an input to the SPI (edge
controlled). The SPI slave becomes active
after a falling edge on SSN and will receive
data on the MOSI input and send data on the
MISO output. After a rising edge on SSN, the
SPI slave is inactive and will not receive data.
Note that the MISO output is not tri-stated
when the SPI slave is inactive. Also note that
the rising edge on SSN must be aligned to the
end of the byte sent / received. If this is not the
case, the next received byte will be corrupted.
If there is a rising edge on SSN in the middle
of a byte, this should be followed by a USART
flush to avoid corruption of the following byte.
In SPI master mode, the SSN pin is not used.
When the USART operates as an SPI master
and a slave select signal is needed by an
external SPI slave device, a general purpose
I/O pin should be used to implement the slave
select signal function in software.
Figure 41: SPI Dataflow
13.14.3 Baud Rate Generation
An internal baud rate generator set up the
UART baud rate when operating in UART
mode and the SPI master clock frequency
when operating in SPI mode.
The
UxBAUD.BAUD_M[7:0]
and
UxGCR.BAUD_E[4:0] registers define the
baud rate used for UART transfers and the
rate of the serial clock (SCK) for SPI transfers.
The baud rate is given by the following
equation:
Baudrate =
(256 + BAUD _ M ) ⋅ 2
2 28
BAUD _ E
⋅F
where F is the system clock frequency set by
the selected system clock source.
The register values required for standard baud
rates are shown in Table 55 (F = 26 MHz) and
Table 56 (24 MHz). The tables also give the
difference in actual baud rate to standard baud
rate value as a percentage error.
The maximum baud rate for UART mode is
F/16
(UxGCR.BAUD_E[4:0]=16
and
UxBAUD.BAUD_M[7:0]=0).
The maximum baud rate for SPI master mode
and
thus
SCK
frequency
is
F/8
(UxGCR.BAUD_E[4:0]=17
and
UxBAUD.BAUD_M[7:0]=0).
If SPI master
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CC1110Fx / CC1111Fx
mode does not need to receive data, the
maximum
SPI
rate
is
F/2
(UxGCR.BAUD_E[4:0]=19
and
UxBAUD.BAUD_M[7:0]=0). Setting higher
baud rates than this will give erroneous results.
For SPI slave mode the maximum baud rate is
always F/8.
Note that the baud rate must be configured
before any other UART or SPI operations take
place (the baud rate should never be changed
when UxCSR.ACTIVE is asserted).
Baud Rate [bps]
UxBAUD.BAUD_M
UxGCR.BAUD_E
Error (%)
2400
131
6
0.04
4800
131
7
0.04
9600
131
8
0.04
14400
34
9
0.13
19200
131
9
0.04
28800
34
10
0.13
38400
131
10
0.04
57600
34
11
0.13
76800
131
11
0.04
115200
34
12
0.13
230400
34
13
0.13
Table 55: Commonly used Baud Rate Settings for 26 MHz System Clock
Baud Rate [bps]
UxBAUD.BAUD_M
UxGCR.BAUD_E
Error (%)
2400
163
6
0.08
4800
163
7
0.08
9600
163
8
0.09
14400
59
9
0.13
19200
163
9
0.10
28800
59
10
0.14
38400
163
10
0.10
57600
59
11
0.14
76800
163
11
0.10
115200
59
12
0.14
230400
59
13
0.14
Table 56: Commonly used Baud Rate Settings for 24 MHz System Clock
13.14.4 USART Flushing
13.14.5 USART Interrupts
The current operation can be aborted
(operation stopped and all data buffers
cleared)
by
setting
UxUCR.FLUSH=1.Asserting the FLUSH bit
should either be aligned with USART interrupts
or a wait time of one bit duration (at current
baud rate) should be added after setting the bit
to 1 before accessing the USART registers.
Each USART has two interrupts. These are the
USART
x
RX
complete
interrupt
(TCON.URXxIF) and the USART x TX
complete interrupt (IRCON2.UTXxIF). The
interrupts
are
enabled
by
setting
IEN0.URXxIE=1
and
IEN2.UTXxIE=1,
respectively. Please see the previous sections
on how the interrupt flags are asserted in the
different modes of operation (UART RX, UART
TX, SPI master, and SPI Slave).
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CC1110Fx / CC1111Fx
The interrupt enables
summarized below.
and
flags
are
Interrupt enable bits:
configured using a USART Receive/transmit
buffer, UxDBUF, as source or destination
address.
Note: For systems requiring setting
UxGDR.CPHA=1, the DMA can not be
used.
• USART0 RX : IEN0.URX0IE
• USART1 RX : IEN0.URX1IE
• USART0 TX : IEN2.UTX0IE
Refer to Table 51 on Page 107 for an overview
of the DMA triggers.
• USART1 TX : IEN2.UTX1IE
Interrupt flags:
• USART0 RX : TCON.URX0IF
13.14.7 USART Registers
• USART1 RX : TCON.URX1IF
The registers for the USART are described in
this section. For each USART there are five
registers consisting of the following (x refers to
USART number i.e. 0 or 1):
• USART0 TX : IRCON2.UTX0IF
• USART1 TX : IRCON2.UTX1IF
• UxCSR USART x Control and Status
13.14.6 USART DMA Triggers
• UxUCR USART x UART Control
There are two DMA triggers associated with
each USART (URX0, UTX0, URX1, and
UTX1). The DMA triggers are activated by RX
complete and TX complete events i.e. the
same events that might generate USART
interrupt requests. A DMA channel can be
• UxGCR USART x Generic Control
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• UxDBUF USART x Receive/Transmit
Data Buffer
• UxBAUD USART x Baud Rate Control
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CC1110Fx / CC1111Fx
U0CSR (0x86) - USART 0 Control and Status
Bit
Name
Reset
R/W
Description
7
MODE
0
R/W
USART 0 mode select
6
5
4
RE
SLAVE
FE
0
0
0
R/W
R/W
R/W0
0
SPI mode
1
UART mode
UART 0 receiver enable
0
Receiver disabled
1
Receiver enabled
SPI 0 master or slave mode select
0
SPI master
1
SPI slave
UART 0 framing error status
0
No framing error detected
1
Byte received with incorrect stop bit level
Note: TCON.URX0IF and U0CSR.RX_BYTE bit will be asserted when
the first stop bit is checked OK, meaning that if two stop bits are sent and
the second stop bit is not OK, this bit is asserted 1 bit duration later than
the 2 other above mentioned bits.
3
2
1
0
ERR
RX_BYTE
TX_BYTE
ACTIVE
0
0
0
0
R/W0
R/W0
R/W0
R
UART 0 parity error status
0
No parity error detected
1
Byte received with parity error
Receive byte status
0
No byte received
1
Received byte ready
Transmit byte status
0
Byte not transmitted
1
Last byte written to Data Buffer register transmitted
USART 0 transmit/receive active status
0
USART 0 idle
1
USART 0 busy in transmit or receive mode
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CC1110Fx / CC1111Fx
U0UCR (0xC4) - USART 0 UART Control
Bit
Name
Reset
R/W
Description
7
FLUSH
0
R0/W1
Flush unit. When set to 1, this event will immediately stop the current
operation and return the unit to idle state.
This bit will be 0 when returning from PM2 and PM3
6
5
FLOW
D9
0
0
R/W
R/W
UART 0 hardware flow control enable. Selects use of hardware flow control
with RTS and CTS pins
0
Flow control disabled
1
Flow control enabled
UART 0 data bit 9 contents. This value is used when 9 bit transfer is
enabled. When parity is disabled the value written to D9 is transmitted as the
th
9 bit when BIT9=1.
If parity is enabled then this bit sets the parity level as follows.
4
3
2
1
0
BIT9
PARITY
SPB
STOP
START
0
0
0
1
0
R/W
R/W
R/W
R/W
R/W
0
Even parity
1
Odd parity
UART 0 9-bit data enable
0
8 bits transfer
1
9 bits transfer (content of the 9 bit is given by D9 and PARITY.)
th
UART 0 parity enable
0
Parity disabled
1
Parity enabled
UART 0 number of stop bits
0
1 stop bit
1
2 stop bits
UART 0 stop bit level
0
Low stop bit
1
High stop bit
UART 0 start bit level. The polarity of the idle line is assumed to be the
opposite of the selected start bit level.
0
Low start bit
1
High start bit
U0GCR (0xC5) - USART 0 Generic Control
Bit
Name
Reset
R/W
Description
7
CPOL
0
R/W
SPI 0 clock polarity
6
5
4:0
CPHA
ORDER
BAUD_E[4:0]
0
0
0x00
R/W
R/W
R/W
0
Negative clock polarity (SCK low when idle)
1
Positive clock polarity (SCK high when idle)
SPI 0 clock phase
0
Data centered on first edge of SCK period
1
Data centered on second edge of SCK period
Bit order for transfers
0
LSB first
1
MSB first
Baud rate exponent value. BAUD_E along with BAUD_M decides the UART 0
baud rate and the SPI 0 clock (SCK) frequency
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CC1110Fx / CC1111Fx
U0DBUF (0xC1) - USART 0 Receive/Transmit Data Buffer
Bit
Name
Reset
R/W
Description
7:0
DATA[7:0]
0x00
R/W
USART 0 receive and transmit data buffer. Writing data to U0DBUF places
the data into the internal transmit buffer. Reading U0DBUF returns the
contents of the receive buffer.
U0BAUD (0xC2) - USART 0 Baud Rate Control
Bit
Name
Reset
R/W
Description
7:0
BAUD_M[7:0]
0x00
R/W
Baud rate mantissa value. BAUD_M along with BAUD_E decides the UART 0
baud rate and the SPI 0 clock (SCK) frequency
U1CSR (0xF8) - USART 1 Control and Status
Bit
Name
Reset
R/W
Description
7
MODE
0
R/W
USART 1 mode select
6
5
4
RE
SLAVE
FE
0
0
0
R/W
R/W
R/W0
0
SPI mode
1
UART mode
UART 1 receiver enable
0
Receiver disabled
1
Receiver enabled
SPI 1 master or slave mode select
0
SPI master
1
SPI slave
UART 1 framing error status
0
No framing error detected
1
Byte received with incorrect stop bit level
Note that TCON.URX1IF and U1CSR.RX_BYTE bit will be asserted
when the first stop bit is checked OK, meaning that if two stop bits are
sent and the second stop bit is not OK, this bit is asserted 1 bit duration
later than the 2 other above mentioned bits.
3
2
1
0
ERR
RX_BYTE
TX_BYTE
ACTIVE
0
0
0
0
R/W0
R/W0
R/W0
R
UART 1 parity error status
0
No parity error detected
1
Byte received with parity error
Receive byte status
0
No byte received
1
Received byte ready
Transmit byte status
0
Byte not transmitted
1
Last byte written to Data Buffer register transmitted
USART 1 transmit/receive active status
0
USART 1 idle
1
USART 1 busy in transmit or receive mode
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CC1110Fx / CC1111Fx
U1UCR (0xFB) - USART 1 UART Control
Bit
Name
Reset
R/W
Description
7
FLUSH
0
R0/W1
Flush unit. When set to 1, this event will immediately stop the current
operation and return the unit to idle state.
This bit will be 0 when returning from PM2 and PM3
6
5
FLOW
D9
0
0
R/W
R/W
UART 1 hardware flow control enable. Selects use of hardware flow control
with RTS and CTS pins
0
Flow control disabled
1
Flow control enabled
UART 1 data bit 9 contents. This value is used when 9 bit transfer is
enabled. When parity is disabled the value written to D9 is transmitted as the
th
9 bit when BIT9=1.
If parity is enabled then this bit sets the parity level as follows.
4
3
2
1
0
BIT9
PARITY
SPB
STOP
START
0
0
0
1
0
R/W
R/W
R/W
R/W
R/W
0
Even parity
1
Odd parity
UART 1 9-bit data enable
0
8 bits transfer
1
9 bits transfer (content of the 9 bit is given by D9 and PARITY.)
th
UART 1 parity enable
0
Parity disabled
1
Parity enabled
UART 1 number of stop bits
0
1 stop bit
1
2 stop bits
UART 1 stop bit level
0
Low stop bit
1
High stop bit
UART 1 start bit level. The polarity of the idle line is assumed to be the
opposite of the selected start bit level.
0
Low start bit
1
High start bit
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CC1110Fx / CC1111Fx
U1GCR (0xFC) - USART 1 Generic Control
Bit
Name
Reset
R/W
Description
7
CPOL
0
R/W
SPI 1 clock polarity
6
5
4:0
CPHA
ORDER
BAUD_E[4:0]
0
0
0x00
R/W
R/W
R/W
0
Negative clock polarity (SCK low when idle)
1
Positive clock polarity (SCK high when idle)
SPI 1 clock phase
0
Data centered on first edge of SCK period
1
Data centered on second edge of SCK period
Bit order for transfers
0
LSB first
1
MSB first
Baud rate exponent value. BAUD_E along with BAUD_M decides the UART 1
baud rate and the SPI 1 clock (SCK) frequency
U1DBUF (0xF9) - USART 1 Receive/Transmit Data Buffer
Bit
Name
Reset
R/W
Description
7:0
DATA[7:0]
0x00
R/W
USART 1 receive and transmit data buffer. Writing data to U1DBUF places
the data into the internal transmit buffer. Reading U1DBUF returns the
contents of the receive buffer.
U1BAUD (0xFA) - USART 1 Baud Rate Control
Bit
Name
Reset
R/W
Description
7:0
BAUD_M[7:0]
0x00
R/W
Baud rate mantissa value. BAUD_M along with BAUD_E decides the UART 1
baud rate and the SPI 1 clock (SCK) frequency
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CC1110Fx / CC1111Fx
13.15
I2S
The CC1110Fx/CC1111Fx provides an industry
standard I2S interface. The I2S interface can be
used to transfer digital audio samples between
the CC1110Fx/CC1111Fx and an external audio
device.
Please see Section 13.4.6.6 for details on I/O
pin mapping for the I2S interface. When the
module is in master mode, it drives the SCK
and WS lines. When the I2S interface is in slave
mode, these lines are driven by an external
master. The data on the serial data lines is
transferred one bit per SCK cycle, most
significant bit first. The WS signal selects the
channel of the current word transfer (left = 0,
right = 1). It also determines the length of each
word. There is a transition on the WS line one
bit time before the first word is transferred and
before the last bit of each word. Figure 42
shows the I2S signaling. Only a single serial
data signal is shown in this figure. The SD
signal could be the RX or TX signal depending
on the direction of the data.
The I2S interface can be configured to operate
as master or slave and may use mono as well
as stereo samples. When mono mode is
enabled, the same audio sample will be used
for both channels. Both full and half duplex is
supported and automatic µ-Law compression
and expansion can be used.
The I2S interface consists of 4 signals:
• Continuous Serial Clock (SCK)
• Word Select (WS)
• Serial Data In (RX)
• Serial Data Out (TX)
SCK
WS
MSB
SD
SAMPLE n-1,
RIGHT CHANNEL
LSB
MSB
LSB
MSB
SAMPLE n+1,
RIGHT CHANNEL
SAMPLE n,
LEFT CHANNEL
Figure 42: I2S Digital Audio Signaling
13.15.1 Enabling I2S
• I2S RX: I2SCFG0.RXIEN
The I2SCFG0.ENAB bit must be set to 1 to
enable the I2S transmitter/receiver. However,
when I2SCFG0.ENAB is 0, the I2S can still be
used
as
a
stand-alone
µ-Law
compression/expansion engine. Refer to
Section 13.15.12 on Page 166 for more details
about this.
• I2S TX: I2SCFG0.TXIEN
13.15.2 I2S Interrupts
The I2S has two interrupts:
• I2S RX complete interrupt (I2SRX)
• I2S TX complete interrupt (I2STX)
The I2S interrupt enable bits are found in the
I2SCFG0 register. The interrupt flags are
located in the I2SSTAT register. The interrupt
enables and flags are summarized below.
Interrupt enable bits:
Interrupt flags:
• I2S RX: I2SSTAT.RXIRQ
• I2S TX: I2SSTAT.TXIRQ
The TX interrupt flag I2SSTAT.TXIRQ is
asserted together with IRCON2.I2STXIF
when the internal TX buffer is empty and the
I2S fetches the new data previously written to
the I2SDATH:I2SDATL registers. The TX
interrupt flag, I2SSTAT.TXIRQ, is cleared
when I2SDATH register is written. An interrupt
request
is
only
generated
when
I2SCFG0.TXIEN and IEN2.I2STXIE are
both set to 1.
The RX interrupt flag I2SSTAT.RXIRQ is
asserted together with TCON.I2SRXIF when
the internal RX buffer is full and the contents of
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Page 163 of 242
CC1110Fx / CC1111Fx
the RX buffer is copied to the pair of internal
data registers that can be read from the
I2SDATH:I2SDATL
registers.
The
RX
interrupt flag, I2SSTAT.RXIRQ, is cleared
when the I2SDATH register is read. An
interrupt request is only generated when
I2SCFG0.RXIEN and IEN0.I2SRXIE are
both set to 1.
Notice that interrupts will also be generated if
the corresponding RXIRQ or TXIRQ flags are
set from software, given that the interrupts are
enabled.
The I2S shares interrupt vector with USART 1,
and the ISR must take this into account if both
modules are used. Refer to Section 11.5 on
Page 60 for more details about interrupts.
13.15.3 I2S DMA Triggers
There are two DMA triggers associated with
the I2S interface, I2SRX and I2STX. The DMA
triggers are activated by RX complete and TX
complete events, i.e. the same events that can
generated the I2S interrupt requests. The DMA
triggers are not masked by the interrupt enable
bits, I2SCFG0.RXIEN and I2SCFG0.TXIEN,
hence a DMA channel can be configured to
use the I2S receive/transmit data registers,
I2SDATH:I2SDATL, as source or destination
address and let RX and TX complete trigger
the DMA.
Notice that the DMA triggers I2SRX and
ADC_CH6 share the same DMA trigger
number (# 27) in the same way as I2STX and
ADC_CH7 share DMA trigger number 28. This
means that I2SRX can not be used together
with ADC_CH6 and I2STX can not be used
together with ADC_CH7. On the CC1111Fx ADC
channels 6 and 7 cannot be used since P0_6
and P0_7 I/O pins are not available.
Refer to Table 51 on Page 107 for an overview
of the DMA triggers.
Thus, when debugging an application,
software may check for underflow/overflow
when an interrupt is generated or when the
application completes. The TXUNF / RXOVF
flags should be cleared in software.
13.15.5 Writing a Word (TX)
When each sample fits into a single byte or µLaw compressed samples (always 8 bits) are
written, i.e. µ-Law expansion is enabled
(I2SCFG0.ULAWE=1), only the I2SDATH
register needs to be written.
When each sample is more than 8 bits the low
byte must be written to the I2SDATL register
before the high byte is written to the I2SDATH
register, hence writing the I2SDATH register
indicates the completion of the write operation.
When the I2S is configured to send stereo, i.e.
I2SCFG0.TXMONO is 0, the I2SSTAT.TXLR
flag can be used to determine whether the leftor right-channel sample is to be written to the
data registers.
13.15.6 Reading a Word (RX)
If each sample fits into a single byte or if µ-Law
compression is enabled (I2SCFG0.ULAWC=1),
only the I2SDATH register needs to be read.
When each sample is more than 8 bits the low
byte must be read from the I2SDATL register
before the high byte is being read from the
I2SDATH register, hence reading from the
I2SDATH register indicates the completion of
the read operation.
When the I2S is configured to receive stereo,
i.e.
I2SCFG0.RXMONO
is
0,
the
I2SSTAT.RXLR flag can be used to determine
whether the sample currently in the data
registers is a left- or right-channel sample.
13.15.7 Full vs. Half Duplex
13.15.4 Underflow/Overflow
If the I2S attempts to read from the internal TX
buffer when it is empty, an underflow condition
occurs. The I2S will then continue to read from
the
data
in
the
TX
buffer,
and
I2SSTAT.TXUNF will be asserted.
If the I2S attempts to write to the internal RX
buffer while it is full, an overflow condition
occurs. The contents of the RX buffer will be
overwritten and the I2SSTAT.RXOVF flag will
be asserted.
The I2S interface supports full duplex and half
duplex operation.
In full duplex both the RX and TX lines will be
used. Both the I2SCFG0.TXIEN and
I2SCFG0.RXIEN interrupt enable bits must be
set to 1 if interrupts are used and both DMA
triggers I2STX and I2SRX must be used.
When half duplex is used only one of the RX
and TX lines are typically connected. Only the
appropriate interrupt flag should be set and
only one of the DMA triggers should be used.
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The value of the numerator is set in the
13.15.8 Master Mode
2
The I S is configured as a master device by
setting I2SCFG0.MASTER to 1. When the
module is in master mode, it drives the SCK
and WS lines.
13.15.8.1 Clock Generation
When the I2S is configured as master, the
frequency of the SCK clock signal must be set
to match the sample rate. The clock frequency
must be set before master mode is enabled.
SCK is generated by dividing the system clock
using a fractional clock divider. The amount of
division is given by the 15 bit numerator, NUM ,
and 9-bit denominator, DENOM, as shown in the
following formula:
Fsck =
Fclk
NUM
2(
)
DENOM
I2SCLKF2.NUM[14:8]:I2SCLKF1.NUM[7:0]
registers and the denominator value is set in
I2SCLKF2.DENOM[8]:I2SCLKF0.DENOM[7:0].
Please note that to stay within the timing
requirements of the I2S specification [7], a
minimum value of 3.35 should be used for the
(NUM / DENOM) fraction.
The fractional divider is made such that most
normal sample rates should be supported for
most normal word sizes with a 24 MHz system
clock frequency (CC1111Fx). Examples of
supported configurations for a 24 MHz system
clock are given in Table 57. Table 58 shows the
configuration values for a 26 MHz system clock
frequency. Notice that the generated I2S
frequency is not exact for the 44.1 kHz, 16 bits
word size configuration at 26 MHz. The
numbers are calculated using the following
formulas, where Fs is the sample rate and W is
the word size:
NUM
> 3.35
DENOM
where
Fs =
Fclk is the system clock frequency and Fsck is the
I2S SCK sample clock frequency.
CLKDIV =
Fsck
2 ⋅W
Fclk
NUM
=
DENOM 4 ⋅ W ⋅ Fs
Fsck (kHz)
Word Size (W)
CLKDIV
I2SCLKF2
I2SCLKF1
I2SCLKF0
Exact
8
8
93.75
0x01
0x77
0x04
Yes
8
16
46.875
0x01
0x77
0x08
Yes
44.1
16
8.503401
0x04
0xE2
0x93
Yes
48
16
7.8125
0x00
0x7D
0x10
Yes
Table 57: Example I2S Clock Configurations (CC1111Fx, 24 MHz)
Fsck (kHz)
Word Size (W)
CLKDIV
I2SCLKF2
I2SCLKF1
I2SCLKF0
Exact
8
8
101.5625
0x06
0x59
0x10
Yes
8
16
50.78125
0x06
0x59
0x20
Yes
44.1
16
9.21201
0x8A
0x2F
0x1B
No
48
16
8.46354
0x06
0x59
0xC0
Yes
Table 58: Example I2S Clock Configurations (CC1110Fx, 26 MHz)
13.15.8.2 Word Size
The word size must be set before master
mode is enabled. The word size is the number
of bits used for each sample and can be set to
a value between 1 and 33. To set the word
size, write word size – 1 to the
I2SCFG1.WORDS[4:0] bits. Setting the word
size to a value of 17 or more causes the I2S to
pad each word with 0’s in the least significant
bits since the data registers provide maximum
16 bits. This feature allows samples to be sent
to an I2S device that takes a higher resolution
than 16 bits.
If the size of the received samples exceeds 16
bits, only the 16 most significant bits will be put
in the data registers and the remaining low
order bits will be discarded.
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13.15.9 Slave Mode
2
The I S is configured as a slave device by
setting I2SCFG0.MASTER to 0. When in slave
mode the SCK and WS signals are generated
by an external I2S master and are inputs to the
I2S interface.
13.15.9.1 Word Size
When the I2S operates in slave mode, the word
size is determined by the master that
generates the WS signal.
The I2S will provide bits from the internal 16-bit
buffer until the buffer is empty. If the buffer
becomes empty and the master still requests
more bits, the I2S will send 0’s (low order bits).
If more than 16 bits are being received, the low
order bits are discarded.
13.15.10 Mono
The I2S also supports mono audio samples.
To receive mono samples, I2SCFG0.RXMONO
should be set to 1. Words from the right
channel will then not be read into the data
registers. This feature is included because
some mono devices repeat their audio data in
both channels and the left channel is the
default mono channel.
To send mono samples, I2SCFG0.TXMONO
should be set to 1. Each word will then be
repeated in both channels before a new word
is fetched from the data registers. This is to
enable sending a mono audio signal to a
stereo audio sink device.
13.15.11 Word Counter
The I2S contains a 10-bit word counter, which
is counting transitions on the WS line. The
counter can be cleared by triggers or by writing
to the I2SWCNT register. When a trigger
occurs, or a value is written to I2SWCNT, the
current value of the word counter is copied into
the
I2SSTAT.WCNT[9:8]:I2SWCNT.WCNT[7:0]regi
sters and the word counter is cleared.
Three triggers can be used to copy/clear the
word counter.
• USB SOF: USB Start of Frame. Occurs
every ms (CC1111Fx only)
• T1_CH0: Timer 1, compare, channel 0
• IOC_1: IO pin input transition (P1_3)
Which trigger to use is configured through the
TRIGNUM field in the I2SCFG1 register. When
the I2S is configured not to use any trigger
(I2SCFG1.TRIGNUM=0), the word counter can
only be copied/cleared from software.
The word counter will saturate if it reaches its
maximum value. Software should configure the
trigger-interval and sample-rate to ensure this
never happens.
CC1111Fx: The word counter is typically used to
calculate the average sample rate over a long
period of time (e.g. 1 second) needed by
adaptive isochronous USB endpoints. The
USB SOF event must then be used as trigger.
13.15.12 µ-Law Compression and Expansion
The I2S interface can be configured to perform
µ-Law compression and expansion. µ-Law
compression is enabled by setting the
I2SCFG0.ULAWC bit to 1 and µ-Law
expansion is enabled by setting the
I2SCFG0.ULAWE bit to 1.
When the I2S interface is enabled, i.e. the
I2SCFG0.ENAB bit is 1, and µ-Law expansion
is enabled, every byte of µ-Law compressed
data written to the I2SDATH register is
expanded to a 16-bit sample before being
transmitted. When the I2S interface is enabled
and µ-Law compression is enabled each
sample received is compressed to an 8-bit µLaw sample and put in the I2SDATH register.
When the I2S interface is disabled, i.e. the
I2SCFG0.ENAB bit is 0, it can still be used to
perform µ-Law compression/expansion for
other resources in the system. To perform an
expansion, I2SCFG0.ULAWE must be 1 and
I2SCFG0.ULAWC must be 0 before writing a
byte of compressed data to the I2SDATH
register. The expansion takes one clock cycle
to perform, and then the result can be read
from the I2SDATH:I2SDATL registers.
To perform a compression I2SCFG0.ULAWE
must be 01 and I2SCFG0.ULAWC must be 1.
To start the compression, an un-compressed
16-bit sample should be written to the
I2SDATH:I2SDATL
registers.
The
compression takes one clock cycle to perform,
and then the result can be read from the
I2SDATH register.
Only one of the flags I2SCFG0.ULAWC and
I2SCFG0.ULAWE should be set to 1 when the
I2SCFG0.ENAB bit is 0.
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13.15.13 I2S Registers
overview of register addresses while the tables
in this section describe each register. Notice
that the reset values for the registers reflect a
configuration with 16-bit stereo samples and
44.1 kHz sample rate. The I2S is not enabled at
reset.
This section describes all the registers used for
I2S control and status. The I2S registers reside
in XDATA memory space in the region 0xDF40
- 0xDF48. Table 33 on Page 52 gives an
0xDF40: I2SCFG0 - I2S Configuration Register 0
Bit
Field Name
Reset
R/W
Description
7
TXIEN
0
R/W
Transmit interrupt enable
6
5
4
3
2
1
0
RXIEN
ULAWE
ULAWC
TXMONO
RXMONO
MASTER
ENAB
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
Interrupt disabled
1
Interrupt enabled
Receive interrupt enable
0
Interrupt disabled
1
Interrupt enabled
µ-Law expansion enable
0
Expansion disabled
1
Expansion enabled
ENAB=0
Enable expansion of data to transmit
ENAB=1
Expand data written to I2SDATH
µ-Law compression enable
0
Compression disabled
1
Compression enabled
ENAB=0
Enable compression of data received
ENAB=1
Compress data written to I2SDATH:I2SDATL
TX mono enable
0
Stereo mode
1
Each sample of audio data will be repeated in both channels before a new
sample is fetched. This is to enable sending a mono signal to a stereo audio
sink device.
RX mono enable
0
Stereo mode
1
Data from the right channel will be discarded, i.e. not be read into the data
registers. This feature is included because some mono devices repeat their
audio data in both channels and left is the default mono channel.
Master mode enable
0
Slave (CLK and WS are read from the pads)
1
Master (generate the CLK and WS)
2
I S interface enable
2
0
Disable (I S can be used as a µ-Law compression/expansion unit)
1
Enable
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CC1110Fx / CC1111Fx
0xDF41: I2SCFG1 - I2S Configuration Register 1
Bit
Field Name
Reset
R/W
Description
7:3
WORDS[4:0]
01111
R/W
This field gives the word size – 1. The word size is the bit-length of one sample for
one channel. Used to generate the WS signal when in master mode.
Reset value 01111 corresponds to 16 bit samples.
2:1
0
TRIGNUM[1:0]
IOLOC
00
0
R/W
R/W
Word counter copy / clear trigger
00
No trigger. Counter copied / cleared by writing to the I2SWCNT register
01
USB SOF (CC1111Fx only)
10
IOC_1 (P1_3)
11
T1_CH0
2
The pin locations for the I S signals. This bit selects between the two alternative
pin mapping alternatives. Refer to Table 50 on Page 92 for an overview of pin
locations.
0
Alt. 1 in Table 50 is used
1
Alt. 2 in Table 50 is used
2
Note: The I S interface will have precedence in cases where other peripherals
(except for the debug interface) are configured to be on the same location.
0xDF42: I2SDATL - I2S Data Low Byte
Bit
Field Name
Reset
R/W
Description
7:0
I2SDAT[7:0]
0x00
R/W
Data register low byte.
If this register is not written between two writes to the I2SDATH register, the low
byte of the TX register will be cleared.
Note: This register will be in its reset state when returning to active mode from PM2
and PM3.
0xDF43: I2SDATH - I2S Data High Byte
Bit
Field Name
Reset
R/W
Description
7:0
I2SDAT[15:8]
0x00
R/W
Data register high byte.
When this register is read, I2SSTAT.RXIRQ is de-asserted and the RX buffer is
considered empty. When this register is written, I2SSTAT.TXIRQ is de-asserted
and the TX buffer is considered full.
Note: This register will be in its reset state when returning to active mode from PM2
and PM3.
0xDF44: I2SWCNT - I2S Word Count Register
Bit
Field Name
Reset
R/W
Description
7:0
WCNT[7:0]
0x00
R/W
This register contains the 8 low order bits of the 10-bit internal word counter at the
time of the last trigger. If this register is written (any value),the value of the internal
word counter is copied into this register and I2SSTAT.WCNT[9:8], and the
internal word counter is cleared.
Refer to Section 13.15.11 for details about how to use this register.
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CC1110Fx / CC1111Fx
0xDF45: I2SSTAT - I2S Status Register
Bit
Field Name
Reset
R/W
Description
7
TXUNF
0
R/W
TX buffer underflow. This bit must be cleared by software
6
RXOVF
0
R/W
Rx buffer overflow. This bit must be cleared by software
5
TXLR
0
R
0 Left channel should be placed in transmit buffer
1 Right channel should be placed in transmit buffer
4
RXLR
0
R
0 Left channel currently in receive buffer
1 Right channel currently in receive buffer
3
TXIRQ
0
R/W
1
TX interrupt flag. This bit is cleared by hardware when the I2SDATH register is
written.
H0
0 Interrupt not pending
1 Interrupt pending
2
RXIRQ
0
R/W
1
H0
1:0
WCNT[9:8]
00
R
RX Interrupt flag. This is cleared by hardware when the I2SDATH register is read.
0 Interrupt not pending
1 Interrupt pending
Upper 2 bits of the 10-bit internal word counter at the time of the last trigger
0xDF46: I2SCLKF0 - I2S Clock Configuration Register 0
Bit
Field Name
Reset
R/W
Description
7:0
DENOM[7:0]
0x93
R/W
The clock division denominator low bits
0xDF47: I2SCLKF1 - I2S Clock Configuration Register 1
Bit
Field Name
Reset
R/W
Description
7:0
NUM[7:0]
0xE2
R/W
Clock division numerator low bits
0xDF48: I2SCLKF2 - I2S Clock Configuration Register 2
Bit
Field Name
Reset
R/W
Description
7
DENOM[8]
0
R/W
Clock division denominator high bits
6:0
NUM[14:8]
0x04
R/W
Clock division numerator high bits
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CC1110Fx / CC1111Fx
13.16
USB Controller
firmware. The firmware must be able to reply
correctly to all standard requests from the USB
host and work according to the protocol
implemented in the driver on the PC.
Note: The USB controller is only available
on the CC1111Fx.
The CC1111Fx contains a Full-Speed USB 2.0
compatible
USB
controller
for
serial
communication with a PC or other equipment
with USB host functionality.
The USB Controller has the following features:
• Full-Speed operation (up to 12 Mbps)
• 5 endpoints (in addition to endpoint 0)
that can be used as IN, OUT, or IN/OUT
and can be configured as bulk/interrupt
or isochronous.
Note: This section will focus on describing
the functionality of the USB controller, and
it is assumed that the reader has a good
understanding of USB and is familiar with
the terms and concepts used. Refer to the
Universal Serial Bus Specification for
details [6].
• 1 KB SRAM FIFO available for storing
USB packets
• Endpoints supporting packet sizes from
8 – 512 bytes
Standard USB nomenclature is used
regarding IN and OUT. I.e., IN is always
into the host (PC) and OUT is out of the
host (into the CC1111Fx)
• Support for double buffering of USB
packets
Figure 43 shows a block diagram of the USB
controller. The USB PHY is the physical
interface with input and output drivers. The
USB SIE is the Serial Interface Engine which
controls the packet transfer to/from the
endpoints. The USB controller is connected to
the rest of the system through the Memory
Arbiter.
The USB controller monitors the USB bus for
relevant activity and handles packet transfers.
The CC1111Fx will always operate as a slave on
the USB bus and responds only on requests
from the host (a packet can only be sent (or
received) when the USB host sends a request
in the form of a token).
Appropriate response to USB interrupts and
loading/unloading
of
packets
into/from
endpoint FIFOs is the responsibility of the
USB Controller
EP0
EP1
DP
EP2
USB PHY
USB SIE
Memory
Arbiter
EP3
DM
EP4
EP5
1 KB
SRAM
(FIFOs)
Figure 43: USB Controller Block Diagram
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13.16.1 48 MHz Clock
13.16.2 USB Enable
A 48 MHz external crystal must be used for the
USB Controller to operate correctly. This 48
MHz clock is divided by two internally to
generate a maximum system clock frequency
of 24 MHz. It is important that the crystal
oscillator is stable before the USB Controller is
accessed. See 13.1.5.1 for details on how to
set up the crystal oscillator.
The USB Controller must be enabled before it
is used. This is performed by setting the
SLEEP.USB_EN
bit
to
1.
Setting
SLEEP.USB_EN to 0 will reset the USB
controller.
13.16.3 USB Interrupts
There are 3 interrupt flag registers with
associated interrupt enable mask registers.
Interrupt Flag
Description
Associated Interrupt
Enable Mask Register
USBCIF
Contains flags for common USB interrupts
USBCIE
USBIIF
Contains interrupt flags for endpoint 0 and all the IN
endpoints
USBIIE
USBOIF
Contains interrupt flags for all OUT endpoints
USBOIE
Note: All interrupts except SOF and suspend are initially enabled after reset
Table 59: USB Interrupt Flags Interrupt Enable Mask Registers
In addition to the interrupt flags in the registers
shown in Table 59, there are two CPU interrupt
flags associated with the USB controller;
IRCON2.USBIF and IRCON.P0IF. For an
interrupt request to be generated, IEN1.P0IE
and/or IEN2.USBIE must be set to 1 together
with the desired interrupt enable bits from the
USBCIE, USBIIE, and USBOIE registers.
When an interrupt request has been
generated, the CPU will start executing the
ISR if there are no higher priority interrupts
pending. The USB controller uses interrupt #6
for USB interrupts. This interrupt number is
shared with Port 2 inputs, hence the interrupt
routine must also handle Port 2 interrupts if
they are enabled. The interrupt routine should
read all the interrupt flag registers and take
action depending on the status of the flags.
The interrupt flag registers will be cleared
when they are read and the status of the
individual interrupt flags should therefore be
saved in memory (typically in a local variable
on the stack) to allow them to be accessed
multiple times.
At the end of the ISR, after the interrupt flags
have been read, the interrupt flags should be
cleared to allow for new USB/P2 interrupts to
be detected. The port 2 interrupt status flags in
the P2IFG register should be cleared prior to
clearing IRCON2.P2IF (see Section 11.5.2).
Refer to Table 39 and Table 40 for a complete
list of interrupts, and Section 11.5 for more
details about interrupts.
13.16.3.1 USB Resume Interrupt
P0_7 does not exist on the CC1111Fx, but the
corresponding interrupt is used for USB
resume interrupt. This means that to be able to
wake up the CC1111Fx from PM1/suspend when
resume signaling has been detected on the
USB bus, IEN1.P0IE must be set to 1
together
with
PICTL.P0IENH.
PICTL.P0ICON must be 0 to enable interrupts
on rising edge. The P0 ISR should check the
P0IFG.USB_RESUME, and resume if this bit is
set to 1. If PM1 is entered from within an ISR
due to a suspend interrupt, it is important that
the priority of the P0 interrupt is set higher than
the priority of the interrupt from which PM1
was entered. See Section 13.16.9 for more
details about suspend and resume.
13.16.4 Endpoint 0
Endpoint 0 (EP0) is a bi-directional control
endpoint and during the enumeration phase all
communication is performed across this
endpoint. Before the USBADDR register has
been set to a value other than 0, the USB
controller will only be able to communicate
through endpoint 0. Setting the USBADDR
register to a value between 1 and 127 will
bring the USB function out of the Default state
in the enumeration phase and into the Address
state. All configured endpoints will then be
available for the application.
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CC1110Fx / CC1111Fx
complete the IN Data stage (the host
tries to receive more data than
expected)
• The USB host tries to send a packet that
exceeds the maximum packet size
during the OUT Data stage
The EP0 FIFO is only used as either IN or
OUT and double buffering is not provided for
endpoint 0. The maximum packet size for
endpoint 0 is fixed at 32 bytes.
Endpoint 0 is controlled through the USBCS0
register by setting the USBINDEX register to 0.
The USBCNT0 register contains the number of
bytes received.
13.16.5 Endpoint 0 Interrupts
The following events may generate an EP0
interrupt request:
• A data packet has been received
(USBCS0.OUTPKT_RDY=1)
• A data packet that was loaded into the
EP0 FIFO has been sent to the USB
host (USBCS0.INPKT_RDY should be
set to 1 when a new packet is ready to
be transferred. This bit will be cleared by
HW when the data packet has been
sent)
• An IN transaction has been completed
(the interrupt is generated during the
Status stage of the transaction)
• A
STALL
has
been
(USBCS0.SENT_STALL=1)
sent
• A control transfer ends due to a
premature end of control transfer
(USBCS0.SETUP_END=1)
Any of these events will cause the
USBIIF.EP0IF to be asserted regardless of
the status of the EP0 interrupt mask bit
USBIIE.EP0IE. If the EP0 interrupt mask bit
is set to 1, the CPU interrupt flag
IRCON2.USBIF will also be asserted. An
interrupt request is only generated if
IEN2.USBIE and USBIIE.EP0IE are both
set to 1.
13.16.5.1 Error Conditions
When a protocol error occurs, the USB
controller sends a STALL handshake. The
USBCS0.SENT_STALL bit is asserted and an
interrupt request is generated if the endpoint 0
interrupt is properly enabled. A protocol error
can be any of the following:
• An OUT token is received after
USBCS0.DATA_END has been set to
complete the OUT Data stage (the host
tries to send more data than expected)
• An IN token is received after
USBCS0.DATA_END has been set to
• The size of the DATA1 packet received
during the Status stage is not 0
The firmware can also terminate the current
transaction
by
setting
the
USBCS0.SEND_STALL bit to 1. The USB
controller will then send a STALL handshake in
response to the next requests from the USB
host.
If an EP0 interrupt is caused by the assertion
of the USBCS0.SENT_STALL bit, this bit
should be de-asserted and firmware should
consider the transfer as aborted (free memory
buffers etc.).
If EP0 receives an unexpected token during
the Data stage, the USBCS0.SETUP_END bit
will be asserted and an EP0 interrupt will be
generated (if enabled properly). EP0 will then
switch to the IDLE state. Firmware should then
set the USBCS0.CLR_SETUP_END bit to 1 and
abort
the
current
transfer.
If
USBCS0.OUTPKT_RDY is asserted, this
indicates that another Setup Packet has been
received that firmware should process.
13.16.5.2 SETUP Transactions (IDLE State)
The control transfer consists of 2 - 3 stages of
transactions (Setup - Data - Status or Setup Status). The first transaction is a Setup
transaction. A successful Setup transaction
comprises three sequential packets (a token
packet, a data packet, and a handshake
packet), where the data field (payload) of the
data packet is exactly 8 bytes long and are
referred to as the Setup Packet. In the Setup
stage of a control transfer, EP0 will be in the
IDLE state. The USB controller will reject the
data packet if the Setup Packet is not 8 bytes.
Also, the USB controller will examine the
contents of the Setup Packet to determine
whether or not there is a Data stage in the
control transfer. If there is a Data stage, EP0
will switch state to TX (IN transaction) or RX
(OUT
transaction)
when
the
USBCS0.CLR_OUTPKT_RDY bit is set to 1 (if
USBCS0.DATA_END=0).
When
a
packet
is
received,
the
USBCS0.OUTPKT_RDY bit will be asserted and
an interrupt request is generated (EP0
interrupt) if the interrupt has been enabled.
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CC1110Fx / CC1111Fx
Firmware should perform the following when a
Setup Packet has been received:
1. Unload the Setup Packet from the EP0
FIFO
2. Examine the contents and perform the
appropriate operations
3. Set the USBCS0.CLR_OUTPKT_RDY bit
to 1. This denotes the end of the Setup
stage. If the control transfer has no Data
stage, the USBCS0.DATA_END bit must
also be set. If there is no Data stage, the
USB Controller will stay in the IDLE
state.
13.16.5.3 IN Transactions (TX state)
If the control transfer requires data to be sent
to the host, the Setup stage will be followed by
one or more IN transactions in the Data stage.
In this case the USB controller will be in TX
state and only accept IN tokens. A successful
IN transaction comprises two or three
sequential packets (a token packet, a data
packet, and a handshake packet18). If more
than 32 bytes (maximum packet size) is to be
sent, the data must be split into a number of 32
byte packets followed by a residual packet. If
the number of bytes to send is a multiple of 32,
the residual packet will be a zero length data
packet, hence a packet size less than 32 bytes
denotes the end of the transfer.
Firmware should load the EP0 FIFO with the
first
data
packet
and
set
the
USBCS0.INPKT_RDY bit as soon as possible
after the USBCS0.CLR_OUTPKT_RDY bit has
been set. The USBCS0.INPKT_RDY will be
cleared and an EP0 interrupt will be generated
when the data packet has been sent. Firmware
might then load more data packets as
necessary. An EP0 interrupt will be generated
for each packet sent. Firmware must set
USBCS0.DATA_END
in
addition
to
USBCS0.INPKT_RDY when the last data
packet has been loaded. This will start the
Status stage of the control transfer.
EP0 will switch to the IDLE state when the
Status stage has completed. The Status stage
may fail if the USBCS0.SEND_STALL bit is set
to 1. The USBCS0.SENT_STALL bit will then
be asserted and an EP0 interrupt will be
generated as explained in Section 13.16.5.1.
If USBCS0.INPKT_RDY is not set when
receiving an IN token, the USB Controller will
18
reply with a NAK to indicate that the endpoint
is working, but temporarily has no data to
send.
13.16.5.4 OUT Transactions (RX state)
If the control transfer requires data to be
received from the host, the Setup stage will be
followed by one or more OUT transactions in
the Data stage. In this case the USB controller
will be in RX state and only accept OUT
tokens. A successful OUT transaction
comprises two or three sequential packets (a
token packet, a data packet, and a handshake
packet19). If more than 32 bytes (maximum
packet size) is to be received, the data must
be split into a number of 32 byte packets
followed by a residual packet. If the number of
bytes to receive is a multiple of 32, the residual
packet will be a zero length data packet, hence
a data packet with payload less than 32 bytes
denotes the end of the transfer.
The USBCS0.OUTPKT_RDY bit will be set and
an EP0 interrupt will be generated when a data
packet has been received. The firmware
should set USBCS0.CLR_OUTPKT_RDY when
the data packet has been unloaded from the
EP0 FIFO. When the last data packet has
been received (packet size less than 32 bytes)
firmware
should
also
set
the
USBCS0.DATA_END bit. This will start the
Status stage of the control transfer. The size of
the data packet is kept in the USBCNT0
registers. Note that this value is only valid
when USBCS0.OUTPKT_RDY=1.
EP0 will switch to the IDLE state when the
Status stage has completed. The Status stage
may fail if the DATA1 packet received is not a
zero length data packet or if the
USBCS0.SEND_STALL bit is set to 1. The
USBCS0.SENT_STALL bit will then be
asserted and an EP0 interrupt will be
generated as explained in Section 13.16.5.1.
13.16.6 Endpoints 1 - 5
Each endpoint can be used as an IN only, an
OUT only, or IN/OUT. For an IN/OUT endpoint
there are basically two endpoints, an IN
endpoint and an OUT endpoint associated with
the endpoint number. Configuration and
control of IN endpoints is performed through
the USBCSIL and USBCSIH registers. The
19
For isochronous transfers there would not be
a handshake packet from the CC1111Fx
For isochronous transfers there would not be
a handshake packet from the host
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CC1110Fx / CC1111Fx
USBCSOL and USBCSOH registers are used to
configure and control OUT endpoints. Each IN
and OUT endpoint can be configured as either
Isochronous
(USBCSIH.ISO=1
and/or
USBCSOH.ISO=1)
or
Bulk/Interrupt
(USBCSIH.ISO=0
and/or
USBCSOH.ISO=0)
endpoints.
Bulk
and
Interrupt endpoints are handled identically by
the USB controller but will have different
properties from a firmware perspective.
The USBINDEX register must have the value of
the endpoint number before the Indexed
Endpoint Registers are accessed (see Table
35 on Page 53).
13.16.6.1 FIFO Management
Each endpoint has a certain number of FIFO
memory bytes available for incoming and
outgoing data packets. Table 60 shows the
FIFO size for endpoints 1 - 5. It is the firmware
that is responsible for setting the USBMAXI and
USBMAXO registers correctly for each endpoint
to prevent data from being overwritten.
single buffering. The IN FIFO grows down from
the top of the endpoint memory region while
the OUT FIFO grows up from the bottom of the
endpoint memory region.
When the IN or OUT endpoint of an endpoint
number use double buffering, the sum of
USBMAXI and USBMAXO must not exceed half
the FIFO size for the endpoint. Figure 44 b)
illustrates the IN and OUT FIFO memory for an
endpoint that uses double buffering. Notice
that the second OUT buffer starts from the
middle of the memory region and grows
upwards. The second IN buffer also starts from
the middle of the memory region but grows
downwards.
To configure an endpoint as IN only, set
USBMAXO to 0 and to configure an endpoint as
OUT only, set USBMAXI to 0.
For unused endpoints, both USBMAXO and
USBMAXI should be set to 0.
When both the IN and the OUT endpoint of an
endpoint number do not use double buffering,
the sum of USBMAXI and USBMAXO must not
exceed the FIFO size for the endpoint. Figure
44 a) shows how the IN and OUT FIFO
memory for an endpoint is organized with
EP Number
FIFO Size (in bytes)
1
32
2
64
3
128
4
256
5
512
Table 60: FIFO Sizes for EP{1 - 5}
0
0
IN FIFO
(Buffer 1)
IN FIFO
USBMAXI - 1
USBMAX0 - 1
USBMAXI - 1
0
0
OUT FIFO
(Buffer 2)
IN FIFO
(Buffer 2)
USBMAXI - 1
USBMAX0 - 1
USBMAX0 - 1
OUT FIFO
0
0
OUT FIFO
(Buffer 1)
b)
a)
Figure 44: IN/OUT FIFOs, a) Single Buffering b) Double Buffering
13.16.6.2 Double Buffering
To enable faster transfer and reduce the need
for retransmissions, CC1111Fx implements
double buffering, allowing two packets to be
buffered in the FIFO in each direction. This is
highly
recommended
for
isochronous
endpoints, which are expected to transfer one
data packet every USB frame without any
retransmission. For isochronous endpoint one
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CC1110Fx / CC1111Fx
data packet will be sent/received every USB
frame. However, the data packet may be
sent/received at any time during the USB
frame period and there is a chance that two
data packets may be sent/received at a few
micro seconds interval. For isochronous
endpoints, an incoming packet will be lost if
there is no buffer available and a zero length
data packet will be sent if there is no data
packet ready for transmission when the USB
host requests data. Double buffering is not as
critical for bulk and interrupt endpoints as it is
for isochronous endpoint since packets will not
be lost. Double buffering, however, may
improve the effective data rate for bulk
endpoints.
To enable double buffering for an IN endpoint,
USBCSIH.IN_DBL_BUF must be set to 1. To
enable double buffering for an OUT endpoint,
set USBCSOH.OUT_DBL_BUF to 1.
13.16.6.3 FIFO Access
The endpoint FIFOs are accessed by reading
and writing to the registers in Table 36 on
Page 53. Writing to a register causes the byte
written to be inserted into the IN FIFO.
Reading a register causes the next byte in the
OUT FIFO to be extracted and the value of this
byte to be returned.
When a data packet has been written to an IN
FIFO, the USBCSIL.INPKT_RDY bit must be
set to 1. If double buffering is enabled, the
USBCSIL.INPKT_RDY bit will be cleared
immediately after it has been written and
another data packet can be loaded. This will
not generate an IN endpoint interrupt, since an
interrupt is only generated when a packet has
been sent. When double buffering is used
firmware should check the status of the
USBCSIL.PKT_PRESENT bit before writing to
the IN FIFO. If this bit is 0, two data packets
can be written. Double buffered isochronous
endpoints should only need to load two
packets the first time the IN FIFO is loaded.
After that, one packet is loaded for every USB
frame. To send a zero length data packet,
USBCSIL.INPKT_RDY should be set to 1
without loading a data packet into the IN FIFO.
A data packet can be read from the OUT FIFO
when the USBCSOL.OUTPKT_RDY bit is 1. An
interrupt will be generated when this occurs, if
enabled. The size of the data packet is kept in
the USBCNTH:USBCNTL registers. Note that
this
value
is
only
valid
when
USBCSOL.OUTPKT_RDY=1. When the data
packet has been read from the OUT FIFO, the
USBCSOL.OUTPKT_RDY bit must be cleared. If
double buffering is enabled there may be two
data packets in the FIFO. If another data
packet
is
ready
when
the
USBCSOL.OUTPKT_RDY bit is cleared the
USBCSOL.OUTPKT_RDY bit will be asserted
immediately and an interrupt will be generated
(if enabled) to signal that a new data packet
has
been
received.
The
USBCSOL.FIFO_FULL bit will be set when
there are two data packets in the OUT FIFO.
The AutoClear feature is supported for OUT
endpoints.
When
enabled,
the
USBCSOL.OUTPKT_RDY
bit
is
cleared
automatically when USBMAXO bytes have been
read from the OUT FIFO. The AutoClear
feature
is
enabled
by
setting
USBCSOH.AUTOCLEAR=1.
The
AutoClear
feature can be used to reduce the time the
data packet occupies the OUT FIFO buffer and
is typically used for bulk endpoints.
A complementary AutoSet feature is supported
for IN endpoints. When enabled, the
USBCSIL.INPKT_RDY bit is set automatically
when USBMAXI bytes have been written to the
IN FIFO. The AutoSet feature is enabled by
setting USBCSIH.AUTOSET=1. The AutoSet
feature can reduce the overall time it takes to
send a data packet and is typically used for
bulk endpoints.
13.16.6.4 Endpoint 1 - 5 Interrupts
The following events may generate an IN EPx
interrupt request (x indicates the endpoint
number):
• A data packet that was loaded into the
IN FIFO has been sent to the USB host
(USBCSIL.INPKT_RDY should be set to
1 when a new packet is ready to be
transferred. This bit will be cleared by
HW when the data packet has been
sent)
• A
STALL
has
been
sent
(USBCSIL.SENT_STALL=1).
Only
Bulk/Interrupt endpoints can be stalled
• The IN FIFO is flushed due to the
USBCSIH.FLUSH_PACKET bit being set
to 1
Any
of
these
events
will
cause
USBIIF.INEPxIF to be asserted regardless
of the status of the IN EPx interrupt mask bit
USBIIE.INEPxIE. If the IN EPx interrupt
mask bit is set to 1, the CPU interrupt flag
IRCON2.USBIF will also be asserted. An
interrupt request is only generated if
IEN2.USBIE and USBIIE.INEPxIE are both
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CC1110Fx / CC1111Fx
set to 1. The x in the register names refer to
the endpoint number 1 - 5)
The following events may generate an OUT
EPx interrupt request:
• A data packet has been received
(USBCSOL.OUTPKT_RDY=1)
• A
STALL
has
been
sent
(USBCSIL.SENT_STALL=1).
Only
Bulk/Interrupt endpoints can be stalled
Any
of
these
events
will
cause
USBOIF.OUTEPxIF
to
be
asserted
regardless of the status of the OUT EPx
interrupt mask bit USBOIE.OUTEPxIE. If the
OUT EPx interrupt mask bit is set to 1, the
CPU interrupt flag IRCON2.USBIF will also be
asserted. An interrupt request is only
generated
if
IEN2.USBIE
and
USBOIE.OUTEPxIE are both set to 1.
13.16.6.5 Bulk/Interrupt IN Endpoint
Interrupt IN transfers occur at regular intervals
while bulk IN transfers utilize available
bandwidth not allocated to isochronous,
interrupt, or control transfers.
Interrupt IN endpoints may set the
USBCSIH.FORCE_DATA_TOG bit. When this bit
is set the data toggle bit is continuously
toggled regardless of whether an ACK was
received or not. This feature is typically used
by interrupt IN endpoints that are used to
communicate rate feedback for Isochronous
endpoints.
A Bulk/Interrupt IN endpoint can be stalled by
setting the USBCSIL.SEND_STALL bit to 1.
When the endpoint is stalled, the USB
controller will respond with a STALL
handshake
to
IN
tokens.
The
USBCSIL.SENT_STALL bit will then be set
and an interrupt will be generated, if enabled.
A bulk transfer longer than the maximum
packet size is performed by splitting the
transfer into a number of data packets of
maximum size followed by a smaller data
packet containing the remaining bytes. If the
transfer length is a multiple of the maximum
packet size, a zero length data packet is sent
last. This means that a packet with a size less
than the maximum packet size denotes the
end of the transfer. The AutoSet feature can
be useful in this case, since many data
packets will be of maximum size.
13.16.6.6 Isochronous IN Endpoint
An Isochronous IN endpoint is used to transfer
periodic data from the USB controller to the
host (one data packet every USB frame).
If there is no data packet loaded in the IN FIFO
when the USB host requests data, the USB
controller sends a zero length data packet and
the USBCSIL.UNDERRUN bit will be asserted.
Double buffering requires that a data packet is
loaded into the IN FIFO during the frame
preceding the frame where it should be sent. If
the first data packet is loaded before an IN
token is received, the data packet will be sent
during the same frame as it was loaded and
hence violate the double buffering strategy.
Thus, when double buffering is used, the
USBPOW.ISO_WAIT_SOF bit should be set to
1 to avoid this. Setting this bit will ensure that a
loaded data packet is not sent until the next
SOF token has been received.
The AutoSet feature will typically not be used
for isochronous endpoints since the packet
size will increase or decrease from frame to
frame.
13.16.6.7 Bulk/Interrupt OUT Endpoint
Interrupt OUT transfers occur at regular
intervals while bulk OUT transfers utilize
available
bandwidth
not
allocated
to
isochronous, interrupt, or control transfers.
A Bulk/Interrupt OUT endpoint can be stalled
by setting the USBCSOL.SEND_STALL bit to
1. When the endpoint is stalled, the USB
controller will respond with a STALL
handshake when the host is done sending the
data packet. The data packet is discarded and
is not placed in the OUT FIFO. The USB
controller
will
assert
the
USBCSOL.SENT_STALL bit when the STALL
handshake is sent and generate an interrupt
request if the OUT endpoint interrupt is
enabled.
As the AutoSet feature is useful for bulk IN
endpoints, the AutoClear feature is useful for
OUT endpoints since many packets will be of
maximum size.
13.16.6.8 Isochronous OUT Endpoint
An Isochronous OUT endpoint is used to
transfer periodic data from the host to the USB
controller (one data packet every USB frame).
If there is no buffer available when a data
packet
is
being
received,
the
USBCSOL.OVERRUN bit will be asserted and
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CC1110Fx / CC1111Fx
the packet data will be lost. Firmware can
reduce the chance for this to happen by using
double buffering and use DMA to effectively
unload data packets.
An isochronous data packet in the OUT FIFO
may have bit errors. The hardware will detect
this condition and set USBCSOL.DATA_ERROR.
Firmware should therefore always check this
bit when unloading a data packet.
The AutoClear feature will typically not be used
for isochronous endpoints since the packet
size will increase or decrease from frame to
frame.
13.16.7 DMA
DMA should be used to fill the IN endpoint
FIFOs and empty the OUT endpoint FIFOs.
Using DMA will improve the read/write
performance significantly compared to using
the 8051 CPU. It is therefore highly
recommended to use DMA unless timing is not
critical or only a few bytes are to be
transferred.
The word size can be byte (8 bits) or word (16
bits). When word size transfer is used the
ENDIAN register must be set correctly (see
Section 13.5.7). The ENDIAN.USBRLE bit
selects whether a word is read as little or big
endian from the OUT FIFOs and the
ENDIAN.USBWLE bit selects whether a word is
written as little or big endian to the IN FIFOs.
Writing and reading words for the different
settings is shown in
Figure 45 and Figure 46 respectively. Notice
that the setting for these bits will be used for all
endpoints. Consequently, it is not possible to
have multiple DMA channels active at once
that use different endianness. The ENDIAN
register must be configured to use big endian
for both read and write for a word size transfer
to produce the same result as a byte size
transfer of an even number of bytes. Word size
transfers are slightly more efficient than byte
transfers.
Refer to Section 13.5 for more details
regarding DMA.
There are no DMA triggers for the USB
controller, meaning that DMA transfers must
be triggered by firmware.
Figure 45: Writing Big/Little Endian
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CC1110Fx / CC1111Fx
Figure 46: Reading Big/Little Endian
13.16.8 USB Reset
When reset signaling is detected on the bus,
the USBCIF.RSTIF flag will be asserted. If
USBCIE.RSTIE is enabled, IRCON2.USBIF
will also be asserted and an interrupt request
is generated if IEN2.USBIE=1. The firmware
should take appropriate action when a USB
reset occurs. A USB reset should place the
device in the Default state where it will only
respond to address 0 (the default address).
One or more resets will normally take place
during the enumeration phase right after the
USB cable is connected.
The following actions are performed by the
USB controller when a USB reset occurs:
• USBADDR is set to 0
• USBINDEX is set to 0
• All endpoint FIFOs are flushed
• USBCS0,
USBCSIL,
USBCSIH,
USBCSOL, USBCSOH are cleared.
• All interrupts, except SOF and suspend,
are enabled
• An interrupt request is generated (if
IEN2.USBIE=1
and
USBCIE.RSTIE=1)
Firmware should close all pipes and wait for a
new enumeration phase when USB reset is
detected.
13.16.9 Suspend and Resume
The
USB
controller
will
assert
USBCIF.SUSPENDIF and enter suspend
mode when the USB bus has been
continuously idle for 3 ms, provided that
USBPOW.SUSPEND_EN=1. IRCON2.USBIF will
be asserted if USBCIE.SUSPENDIE
is
enabled, and an interrupt request is generated
if IEN2.USBIE=1.
While in suspend mode, only limited current
can be sourced from the USB bus. See the
USB 2.0 Specification [6] for details about this.
To be able to meet the suspend-current
requirement, the CC1111Fx should be taken
down to PM1 when suspend is detected. The
CC1111Fx should not enter PM2 or PM3 since
this will reset the USB controller.
Any valid non-idle signaling on the USB bus
will cause the USBCIF.RESUMEIF to be
asserted and an interrupt request to be
generated and wake up the system if the USB
resume interrupt is configured correctly. Refer
to 13.16.3.1 for details about how to set up the
USB resume interrupt.
Any valid non-idle signaling on the USB bus
will cause the USBCIF.RESUMEIF to be
asserted and an interrupt request to be
generated and wake up the system if the USB
resume interrupt is configured correctly. Refer
to 13.16.3.1 for details about how to set up the
USB resume interrupt.
When the system wakes up (enters active
mode) from suspend, no USB registers must
be accessed before the 48 MHZ crystal
oscillator has stabilized.
A USB reset will also wake up the system from
suspend. A USB resume interrupt request will
be generated, if the interrupt is configured as
described
in
13.16.3.1,
but
the
USBCIF.RSTIF interrupt flag will be set
instead of the USBCIF.RESUMEIF interrupt
flag.
13.16.10 Remote Wakeup
The USB controller can resume from suspend
by signaling resume to the USB hub. Resume
is performed by setting USBPOW.RESUME to 1
for approximately 10 ms. According to the USB
2.0 Specification [6], the resume signaling
must be present for at least 1 ms and no more
than 15 ms. It is, however, recommended to
keep the resume signaling for approximately
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CC1110Fx / CC1111Fx
10 ms. Notice that support for remote wakeup
must be declared in the USB descriptor, and
that the USB host must grant the device the
privilege to perform remote wakeup (through a
SET_FEATURE request).
13.16.11 USB Registers
This section describes all USB registers used
for control and status for the USB. The USB
registers reside in XDATA memory space in
the region 0xDE00 - 0xDE3F. These registers
can be divided into three groups: The Common
USB Registers, the Indexed Endpoint
Registers, and the Endpoint FIFO Registers.
Table 34, Table 35, and Table 36 give an
overview of the registers in the three groups
respectively, while the remaining of this section
will describe each register in detail. The
Indexed Endpoint Registers represent the
currently selected endpoint. The USBINDEX
register is used to select the endpoint.
Notice that the upper register addresses
0xDE2C - 0xDE3F are reserved.
0xDE00: USBADDR - Function Address
Bit
Field Name
Reset
R/W
Description
7
UPDATE
0
R
This bit is set when the USBADDR register is written and cleared when the
address becomes effective.
6:0
USBADDR[6:0]
0x00
R/W
Device address
0xDE01: USBPOW - Power/Control Register
Bit
Field Name
Reset
R/W
Description
7
ISO_WAIT_SOF
0
R/W
When this bit is set to 1, the USB controller will send zero length data packets
from the time INPKT_RDY is asserted and until the first SOF token has been
received. This only applies to isochronous endpoints.
-
R0
Not used
6:4
3
RST
0
R
During reset signaling, this bit is set to1
2
RESUME
0
R/W
Drive resume signaling for remote wakeup. According to the USB Specification
the duration of driving resume must be at least 1 ms and no more than 15 ms.
It is recommended to keep this bit set for approximately 10 ms.
1
SUSPEND
0
R
Suspend mode entered. This bit will only be used when SUSPEND_EN=1.
Reading the USBCIF register or asserting RESUME will clear this bit.
0
SUSPEND_EN
0
R/W
Suspend Enable. When this bit is set to 1, suspend mode will be entered when
USB bus has been idle for 3 ms.
0xDE02: USBIIF - IN Endpoints and EP0 Interrupt Flags
Bit
Field Name
7:6
Reset
R/W
Description
00
R0
Reserved
5
INEP5IF
0
R, H0
Interrupt flag for IN endpoint 5. Cleared by HW when read
4
INEP4IF
0
R, H0
Interrupt flag for IN endpoint 4. Cleared by HW when read
3
INEP3IF
0
R, H0
Interrupt flag for IN endpoint 3. Cleared by HW when read
2
INEP2IF
0
R, H0
Interrupt flag for IN endpoint 2. Cleared by HW when read
1
INEP1IF
0
R, H0
Interrupt flag for IN endpoint 1. Cleared by HW when read
0
EP0IF
0
R, H0
Interrupt flag for endpoint 0. Cleared by HW when read
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CC1110Fx / CC1111Fx
0xDE04: USBOIF - Out Endpoints Interrupt Flags
Bit
Field Name
7:6
Reset
R/W
Description
00
R0
Reserved
5
OUTEP5IF
0
R, H0
Interrupt flag for OUT endpoint 5. Cleared by HW when read
4
OUTEP4IF
0
R, H0
Interrupt flag for OUT endpoint 4. Cleared by HW when read
3
OUTEP3IF
0
R, H0
Interrupt flag for OUT endpoint 3. Cleared by HW when read
2
OUTEP2IF
0
R, H0
Interrupt flag for OUT endpoint 2. Cleared by HW when read
1
OUTEP1IF
0
R, H0
Interrupt flag for OUT endpoint 1. Cleared by HW when read
-
R0
Not used
0
0xDE06: USBCIF - Common USB Interrupt Flags
Bit
Field Name
7:4
Reset
R/W
Description
-
R0
Not used
3
SOFIF
0
R, H0
Start-Of-Frame interrupt flag. Cleared by HW when read
2
RSTIF
0
R, H0
Reset interrupt flag. Cleared by HW when read
1
RESUMEIF
0
R, H0
Resume interrupt flag. Cleared by HW when read
0
SUSPENDIF
0
R, H0
Suspend interrupt flag. Cleared by HW when read
0xDE07: USBIIE - IN Endpoints and EP0 Interrupt Enable Mask
Bit
Field Name
7:6
5
4
3
2
1
0
INEP5IE
INEP4IE
INEP3IE
INEP2IE
INEP1IE
EP0IE
Reset
R/W
Description
00
R/W
Reserved. Always write 00
1
R/W
IN endpoint 5 interrupt enable
1
1
1
1
1
R/W
R/W
R/W
R/W
R/W
0
Interrupt disabled
1
Interrupt enabled
IN endpoint 4 interrupt enable
0
Interrupt disabled
1
Interrupt enabled
IN endpoint 3 interrupt enable
0
Interrupt disabled
1
Interrupt enabled
IN endpoint 2 interrupt enable
0
Interrupt disabled
1
Interrupt enabled
IN endpoint 1 interrupt enable
0
Interrupt disabled
1
Interrupt enabled
Endpoint 0 interrupt enable
0
Interrupt disabled
1
Interrupt enabled
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0xDE09: USBOIE - Out Endpoints Interrupt Enable Mask
Bit
Field Name
7:6
5
4
3
2
1
OUTEP5IE
OUTEP4IE
OUTEP3IE
OUTEP2IE
OUTEP1IE
0
Reset
R/W
Description
00
R/W
Reserved. Always write 00
1
R/W
OUT endpoint 5 interrupt enable
1
1
1
1
-
R/W
R/W
R/W
R/W
R0
0
Interrupt disabled
1
Interrupt enabled
OUT endpoint 4 interrupt enable
0
Interrupt disabled
1
Interrupt enabled
OUT endpoint 3 interrupt enable
0
Interrupt disabled
1
Interrupt enabled
OUT endpoint 2 interrupt enable
0
Interrupt disabled
1
Interrupt enabled
OUT endpoint 1 interrupt enable
0
Interrupt disabled
1
Interrupt enabled
Not used
0xDE0B: USBCIE - Common USB Interrupt Enable Mask
Bit
Field Name
7:4
3
2
1
0
SOFIE
RSTIE
RESUMEIE
SUSPENDIE
Reset
R/W
Description
-
R0
Not used
0
R/W
Start-Of-Frame interrupt enable
1
1
0
R/W
R/W
R/W
0
Interrupt disabled
1
Interrupt enabled
Reset interrupt enable
0
Interrupt disabled
1
Interrupt enabled
Resume interrupt enable
0
Interrupt disabled
1
Interrupt enabled
Suspend interrupt enable
0
Interrupt disabled
1
Interrupt enabled
0xDE0C: USBFRML - Current Frame Number (Low byte)
Bit
Field Name
Reset
R/W
Description
7:0
FRAME[7:0]
0x00
R
Low byte of 11-bit frame number
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CC1110Fx / CC1111Fx
0xDE0D: USBFRMH - Current Frame Number (High byte)
Bit
Field Name
7:3
2:0
FRAME[10:8]
Reset
R/W
Description
-
R0
Not used
000
R
3 MSB of 11-bit frame number
0xDE0E: USBINDEX - Current Endpoint Index Register
Bit
Field Name
7:4
3:0
USBINDEX[3:0]
Reset
R/W
Description
-
R0
Not used
0000
R/W
Endpoint selected. Must be set to value in the range 0 - 5
0xDE10: USBMAXI - Max. Packet Size for IN Endpoint{1 - 5}
Bit
Field Name
Reset
R/W
Description
7:0
USBMAXI[7:0]
0x00
R/W
Maximum packet size in units of 8 bytes for IN endpoint selected by
USBINDEX register. The value of this register should correspond to the
wMaxPacketSize field in the Standard Endpoint Descriptor for the endpoint.
This register must not be set to a value grater than the available FIFO
memory for the endpoint.
0xDE11: USBCS0 - EP0 Control and Status (USBINDEX=0)
Bit
Field Name
Reset
R/W
Description
7
CLR_SETUP_END
0
R/W
Set this bit to 1 to de-assert the SETUP_END bit of this register. This bit will be
cleared automatically.
H0
6
CLR_OUTPKT_RDY
0
5
SEND_STALL
0
R/W
H0
R/W
H0
Set this bit to 1 to de-assert the OUTPKT_RDY bit of this register. This bit will
be cleared automatically.
Set this bit to 1 to terminate the current transaction. The USB controller will
send the STALL handshake and this bit will be de-asserted.
4
SETUP_END
0
R
This bit is set if the control transfer ends due to a premature end of control
transfer. The FIFO will be flushed and an interrupt request (EP0) will be
generated if the interrupt is enabled. Setting CLR_SETUP_END=1 will deassert this bit
3
DATA_END
0
R/W
This bit is used to signal the end of a data transfer and must be asserted in
the following three situations:
H0
1
When the last data packet has been loaded and USBCS0.INPKT_RDY is
set to 1
2
When the last data packet has been unloaded and
USBCS0.CLR_OUTPKT_RDY is set to 1
3
When USBCS0.INPKT_RDY has been asserted without having loaded
the FIFO (for sending a zero length data packet).
The USB controller will clear this bit automatically
2
SENT_STALL
0
R/W
H1
1
INPKT_RDY
0
R/W
H0
0
OUTPKT_RDY
0
R
This bit is set when a STALL handshake has been sent. An interrupt request
(EP0) will be generated if the interrupt is enabled This bit must be cleared
from firmware.
Set this bit when a data packet has been loaded into the EP0 FIFO to notify
the USB controller that a new data packet is ready to be transferred. When
the data packet has been sent, this bit is cleared and an interrupt request
(EP0) will be generated if the interrupt is enabled.
Data packet received. This bit is set when an incoming data packet has been
placed in the OUT FIFO. An interrupt request (EP0) will be generated if the
interrupt is enabled. Set CLR_OUTPKT_RDY=1 to de-assert this bit.
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CC1110Fx / CC1111Fx
0xDE11: USBCSIL - IN EP{1 - 5} Control and Status Low
Bit
Field Name
7
6
CLR_DATA_TOG
Reset
R/W
Description
-
R0
Not used
0
R/W
Setting this bit will reset the data toggle to 0. Thus, setting this bit will force
the next data packet to be a DATA0 packet. This bit is automatically
cleared.
H0
5
SENT_STALL
0
R/W
This bit is set when a STALL handshake has been sent. The FIFO will be
flushed and the INPKT_RDY bit in this register will be de-asserted. An
interrupt request (IN EP{1 - 5}) will be generated if the interrupt is enabled.
This bit must be cleared from firmware.
4
SEND_STALL
0
R/W
Set this bit to 1 to make the USB controller reply with a STALL handshake
when receiving IN tokens. Firmware must clear this bit to end the STALL
condition. It is not possible to stall an isochronous endpoint, thus this bit will
only have effect if the IN endpoint is configured as bulk/interrupt.
3
FLUSH_PACKET
0
R/W
Set to 1 to flush next packet that is ready to transfer from the IIN FIFO. The
INPKT_RDY bit in this register will be cleared. If there are two packets in
the IN FIFO due to double buffering, this bit must be set twice to completely
flush the IN FIFO. This bit is automatically cleared.
H0
2
UNDERRUN
0
R/W
In isochronous mode, this bit is set if an IN token is received when
INPKT_RDY=0, and a zero length data packet is transmitted in response to
the IN token. In Bulk/Interrupt mode, this bit is set when a NAK is returned
in response to an IN token. Firmware should clear this bit.
1
PKT_PRESENT
0
R
This bit is 1 when there is at least one packet in the IN FIFO.
0
INPKT_RDY
0
R/W
Set this bit when a data packet has been loaded into the IN FIFO to notify
the USB controller that a new data packet is ready to be transferred. When
the data packet has been sent, this bit is cleared and an interrupt request
(IN EP{1 - 5}) will be generated if the interrupt is enabled.
H0
0xDE12: USBCSIH - IN EP{1 - 5} Control and Status High
Bit
Field Name
Reset
R/W
Description
7
AUTOSET
0
R/W
When this bit is 1, the USBCSIL.INPKT_RDY bit is automatically asserted
when a data packet of maximum size (specified by USBMAXI) has been
loaded into the IN FIFO.
6
ISO
0
R/W
Selects IN endpoint type
5:4
3
FORCE_DATA_TOG
2:1
0
IN_DBL_BUF
0
Bulk/Interrupt
1
Isochronous
10
R/W
Reserved. Always write 10
0
R/W
Setting this bit will force the IN endpoint data toggle to switch and the data
packet to be flushed from the IN FIFO even though an ACK was received.
This feature can be useful when reporting rate feedback for isochronous
endpoints.
-
R0
Not used
0
R/W
Double buffering enable (IN FIFO)
0
Double buffering disabled
1
Double buffering enabled
0xDE13: USBMAXO - Max. Packet Size for OUT{1 - 5} Endpoint
Bit
Field Name
Reset
R/W
Description
7:0
USBMAXO[7:0]
0x00
R/W
Maximum packet size in units of 8 bytes for OUT endpoint selected by
USBINDEX register. The value of this register should correspond to the
wMaxPacketSize field in the Standard Endpoint Descriptor for the endpoint.
This register must not be set to a value grater than the available FIFO memory
for the endpoint.
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CC1110Fx / CC1111Fx
0xDE14: USBCSOL - OUT EP{1 - 5} Control and Status Low
Bit
Field Name
Reset
R/W
Description
7
CLR_DATA_TOG
0
R/W
Setting this bit will reset the data toggle to 0. Thus, setting this bit will force the
next data packet to be a DATA0 packet. This bit is automatically cleared.
H0
6
SENT_STALL
0
R/W
This bit is set when a STALL handshake has been sent. An interrupt request
(OUT EP{1 - 5}) will be generated if the interrupt is enabled. This bit must be
cleared from firmware
5
SEND_STALL
0
R/W
Set this bit to 1 to make the USB controller reply with a STALL handshake
when receiving OUT tokens. Firmware must clear this bit to end the STALL
condition. It is not possible to stall an isochronous endpoint, thus this bit will
only have effect if the IN endpoint is configured as bulk/interrupt.
4
FLUSH_PACKET
0
R/W
Set to 1 to flush next packet that is to be read from the OUT FIFO. The
OUTPKT_RDY bit in this register will be cleared. If there are two packets in the
OUT FIFO due to double buffering, this bit must be set twice to completely flush
the OUT FIFO. This bit is automatically cleared.
H0
3
DATA_ERROR
0
R
This bit is set if there is a CRC or bit-stuff error in the packet received. Cleared
when OUTPKT_RDY is cleared. This bit will only be valid if the OUT endpoint is
isochronous.
2
OVERRUN
0
R/W
This bit is set when an OUT packet cannot be loaded into the OUT FIFO.
Firmware should clear this bit. This bit is only valid in isochronous mode
1
FIFO_FULL
0
R
This bit is asserted when no more packets can be loaded into the OUT FIFO
full.
0
OUTPKT_RDY
0
R/W
This bit is set when a packet has been received and is ready to be read from
OUT FIFO. An interrupt request (OUT EP{1 - 5}) will be generated if the
interrupt is enabled. This bit should be cleared when the packet has been
unloaded from the FIFO.
0xDE15: USBCSOH - OUT EP{1 - 5} Control and Status High
Bit
Field Name
Reset
R/W
Description
7
AUTOCLEAR
0
R/W
When this bit is set to 1, the USBCSOL.OUTPKT_RDY bit is automatically
cleared when a data packet of maximum size (specified by USBMAXO) has been
unloaded to the OUT FIFO.
6
ISO
0
R/W
Selects OUT endpoint type
0
Bulk/Interrupt
1
Isochronous
5:4
00
R/W
Reserved. Always write 00
3:1
-
R0
Not used
0
R/W
Double buffering enable (OUT FIFO)
0
OUT_DBL_BUF
0
Double buffering disabled
1
Double buffering enabled
0xDE16: USBCNT0 - Number of Received Bytes in EP0 FIFO (USBINDEX=0)
Bit
Field Name
7:6
5:0
USBCNT0[5:0]
Reset
R/W
Description
-
R0
Not used
000000
R
Number of received bytes into EP 0 FIFO. Only valid when OUTPKT_RDY is
asserted
0xDE16: USBCNTL - Number of Bytes in EP{1 - 5} OUT FIFO Low
Bit
Field Name
Reset
R/W
Description
7:0
USBCNT[7:0]
0x00
R
8 LSB of number of received bytes into OUT FIFO selected by USBINDEX
register. Only valid when USBCSOL.OUTPKT_RDY is asserted.
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CC1110Fx / CC1111Fx
0xDE17: USBCNTH - Number of Bytes in EP{1 - 5} OUT FIFO High
Bit
Field Name
7:3
2:0
USBCNT[10:8]
Reset
R/W
Description
-
R0
Not used
000
R
3 MSB of number of received bytes into OUT FIFO selected by USBINDEX
register. Only valid when USBCSOL.OUTPKT_RDY is set
0xDE20: USBF0 - Endpoint 0 FIFO
Bit
Field Name
Reset
R/W
Description
7:0
USBF0[7:0]
0x00
R/W
Endpoint 0 FIFO. Reading this register unloads one byte from the EP0 FIFO.
Writing to this register loads one byte into the EP0 FIFO.
Note: The FIFO memory for EP0 is used for both incoming and outgoing data
packets.
0xDE22: USBF1 - Endpoint 1 FIFO
Bit
Field Name
Reset
R/W
Description
7:0
USBF1[7:0]
0x00
R/W
Endpoint 1 FIFO register. Reading this register unloads one byte from the EP1
OUT FIFO. Writing to this register loads one byte into the EP1 IN FIFO.
0xDE24: USBF2 - Endpoint 2 FIFO
Bit
Field Name
Reset
R/W
Description
7:0
USBF2[7:0]
0x00
R/W
See Endpoint 1 FIFO description.
0xDE26: USBF3 - Endpoint 3 FIFO
Bit
Field Name
Reset
R/W
Description
7:0
USBF3[7:0]
0x00
R/W
See Endpoint 1 FIFO description.
0xDE28: USBF4 - Endpoint 4 FIFO
Bit
Field Name
Reset
R/W
Description
7:0
USBF4[7:0]
0x00
R/W
See Endpoint 1 FIFO description.
0xDE2A: USBF5 - Endpoint 5 FIFO
Bit
Field Name
Reset
R/W
Description
7:0
USBF5[7:0]
0x00
R/W
See Endpoint 1 FIFO description.
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CC1110Fx / CC1111Fx
14
Radio
RF_P
0
RF_N
FREQ
SYNTH
MODULATOR
90
PA
CPU INTERFACE
ADC
PACKET HANDLER
LNA
FEC / INTERLEAVER
ADC
DEMODULATOR
RADIO CONTROL
Figure 47: CC1110Fx/CC1111Fx Radio Module
A simplified block diagram of the radio module
in the CC1110Fx/CC1111Fx is shown in Figure 47.
CC1110Fx/CC1111Fx features a low-IF receiver.
The received RF signal is amplified by the lownoise amplifier (LNA) and down-converted in
quadrature (I and Q) to the intermediate
frequency (IF). At IF, the I/Q signals are
digitized by the ADCs. Automatic gain control
(AGC), fine channel filtering, demodulation
bit/packet synchronization are performed
digitally.
The transmitter part of CC1110Fx/CC1111Fx is
based on direct synthesis of the RF frequency.
The frequency synthesizer includes a
completely on-chip LC VCO and a 90 degrees
phase shifter for generating the I and Q LO
signals to the down-conversion mixers in
receive mode.
The 26/48 MHz crystal oscillator generates the
reference frequency for the synthesizer, as
well as clocks for the ADC and the digital part.
An SFR interface is used for data buffer
access from the CPU. Configuration and status
registers are accessed through registers
mapped to XDATA memory.
The digital baseband includes support for
channel configuration, packet handling, and
data buffering.
Note: In this section of the document, fRef is used to denote
the reference frequency for the synthesizer.
For CC1110Fx fref = f XOSC and for CC1111Fx, f ref =
f XOSC
2
14.1 Command Strobes
The CPU uses a set of command strobes to
control operation of the radio.
Command strobes may be viewed as single
byte instructions which each start an internal
sequence in the radio. These command
strobes are used to enable the frequency
synthesizer, enable receive mode, enable
transmit mode, etc. (see Figure 48).
The 6 command strobes are listed in Table 61
on Page 188.
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CC1110Fx / CC1111Fx
SIDLE
Default state when the radio is not
receiving or transmitting.
Used for calibrating frequency
synthesizer upfront (entering
Manual freq.
receive or transmit mode can
synth. calibration
then be done quicker).
Transitional state.
SCAL
SFSTXON
Frequency synthesizer is on,
ready to start transmitting.
Transmission starts very
quickly after receiving the
STX command strobe.
Idle
SRX or STX or SFSTXON
Frequency
synthesizer startup,
optional calibration,
settling
Frequency synthesizer is turned on, can optionally
be calibrated, and then settles to correct frequency.
Transitional state
Frequency
synthesizer on
STX
SRX
STX
TXOFF_MODE=01
SFSTXON or RXOFF_MODE=01
Transmit mode
STX or RXOFF_MODE=10
Receive mode
SRX or TXOFF_MODE=11
TXOFF_MODE=00
Transmission is
turned off and this
state is entered if
the RFD register
becomes empty in
the middle of a
packet.
Typ. current
consumption:
1.8 mA
RXOFF_MODE=00
Optional transitional state.
TX Overflow
Optional freq.
synth. calibration
SIDLE
RX Overflow
Reception is turned
off and this state is
entered if the RFD
register overflows.
SIDLE
Idle
.
Figure 48: Simplified State Diagram with Typical Usage and Current Consumption in Radio at 250
kBaud Data Rate and MDMCFG2.DEM_DCFILT_OFF=1 (current optimized)
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CC1110Fx / CC1111Fx
RFST
Value
Command
Strobe
Name
Description
0x00
SFSTXON
Enable and calibrate frequency synthesizer (if MCSM0.FS_AUTOCAL=1). If in RX (with
CCA):
Go to a wait state where only the synthesizer is running (for quick RX / TX turnaround).
0x01
SCAL
Calibrate frequency synthesizer and turn it off. SCAL can be strobed from IDLE mode
without setting manual calibration mode (MCSM0.FS_AUTOCAL=0)
0x02
SRX
Enable RX. Perform calibration first if coming from IDLE and MCSM0.FS_AUTOCAL=1.
0x03
STX
In IDLE state: Enable TX. Perform calibration first if MCSM0.FS_AUTOCAL=1.
If in RX state and CCA is enabled: Only go to TX if channel is clear.
0x04
SIDLE
Enter IDLE state (frequency synthesizer turned off).
All
others
SNOP
No operation.
Table 61: Command Strobes
14.2 Radio Registers
The operation of the radio is configured
through a set of RF registers. These RF
registers are mapped to XDATA memory
space as shown in Figure 14 on Page 43 .
In addition to configuration registers, the RF
registers also provide status information from
the radio.
Section 11.2.3.4 on Page 50 gives a full
description of all RF registers.
14.3 Interrupts
There are two interrupt vector assigned to the
radio. These are the RFTXRX interrupt
(interrupt #0) and the RF interrupt (interrupt
#16):
• RFTXRX: RX data ready or TX data
complete (related to the RFD register)
• RF: All other general RF interrupts
For an interrupt request to be generated when
TCON.RFTXRXIF
is
asserted,
IEN0.RFTXRXIE must be 1.
14.3.1.2
RF
There are 8 different events that can generate
an RF interrupt request. These events are:
• TX underflow
The RF interrupt vector combines the
interrupts shown in the RFIM register shown
on Page 190. Note that these RF interrupts are
rising-edge triggered meaning that an interrupt
is generated when e.g. the SFD status flag
goes from 0 to 1.
• RX overflow
• RX timeout
• Packet received/transmitted. Also used
to detect overflow/underflow conditions
The RF interrupt flags are described in the
next section.
• CS
• PQT reached
14.3.1
14.3.1.1
Interrupt Registers
• CCA
RFTXRX
• SFD
The RFTXTX interrupt is related to the RFD
register. The CPU interrupt flag RFTXRXIF
found in the TCON register is asserted when
there are data in the RFD register ready to be
read (RX), and when a new byte can be written
(TX).
Each of these events has a corresponding
interrupt flag in the RFIF register which is
asserted when the event occurs. If the
corresponding mask bit is set in the RFIM
register, the CPU interrupt flag S1CON.RFIF
will also be asserted in addition to the interrupt
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CC1110Fx / CC1111Fx
flag in RFIF. If IEN2.RFIE=1 when
S1CON.RFIF is asserted, and interrupt
request will be generated.
Refer to 11.5 for details about the interrupts.
RFIF (0xE9) - RF Interrupt Flags
Bit
Name
Reset
R/W
Description
7
IRQ_TXUNF
0
R/W0
TX underflow
6
5
4
3
2
1
0
IRQ_RXOVF
IRQ_TIMEOUT
IRQ_DONE
IRQ_CS
IRQ_PQT
IRQ_CCA
IRQ_SFD
0
0
0
0
0
0
0
R/W0
R/W0
R/W0
R/W0
R/W0
R/W0
R/W0
0
No interrupt pending
1
Interrupt pending
RX overflow
0
No interrupt pending
1
Interrupt pending
RX timeout, no packet has been received in the programmed period
0
No interrupt pending
1
Interrupt pending
Packet received/transmitted. Also used to detect underflow/overflow
conditions
0
No interrupt pending
1
Interrupt pending
Carrier sense
0
No interrupt pending
1
Interrupt pending
Preamble quality threshold reached
0
No interrupt pending
1
Interrupt pending
Clear Channel Assessment
0
No interrupt pending
1
Interrupt pending
Start of Frame Delimiter, sync word detected
0
No interrupt pending
1
Interrupt pending
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CC1110Fx / CC1111Fx
RFIM (0x91) - RF Interrupt Mask
Bit
Name
Reset
R/W
Description
7
IM_TXUNF
0
R/W
TX underflow
6
5
4
3
2
1
0
IM_RXOVF
IM_TIMEOUT
IM_DONE
IM_CS
IM_PQT
IM_CCA
IM_SFD
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
Interrupt disabled
1
Interrupt enabled
RX overflow
0
Interrupt disabled
1
Interrupt enabled
RX timeout, no packet has been received in the programmed period.
0
Interrupt disabled
1
Interrupt enabled
Packet received/transmitted. Also used to detect underflow/overflow conditions
0
Interrupt disabled
1
Interrupt enabled
Carrier sense
0
Interrupt disabled
1
Interrupt enabled
Preamble quality threshold reached.
0
Interrupt disabled
1
Interrupt enabled
Clear Channel Assessment
0
Interrupt disabled
1
Interrupt enabled
Start of Frame Delimiter, sync word detected
0
Interrupt disabled
1
Interrupt enabled
14.4 TX/RX Data Transfer
Data to transmit is written to the RF Data
register, RFD. Received data is read from the
same register. The RFD register can be viewed
as a 1 byte FIFO. That means that if a byte is
received in the RFD register, and it is not read
before the next byte is received, the radio will
enter RX_OVERFLOW state and the
RFIF.IRQ_RXOVF flag will be set together
with RFIF.IRQ_DONE. In TX, the radio will
enter
TX_UNDERFLOW
state
(RFIF.IRQ_TXUVF and RFIF.IRQ_DONE will
be asserted) if too few bytes are written to the
RFD register compared to what the radio
expect. To exit RX_OVERFLOW and/or
TX_UNDERFLOW state, an SIDLE strobe
command should be issued.
Note: The RFD register content will not be
retianed in PM2 and PM3
RX and TX FIFOs can be implemented in
memory and it is recommended to use the
DMA to transfer data between the FIFOs and
the RF Data register, RFD. The DMA channel
used to transfer received data to memory
when the radio is in RX mode would have RFD
as the source (SRCADDR[15:0]), the RX
FIFO
in
memory
as
destination
(DRSTADDR[15:0]), and RADIO as DMA
trigger (TRIG[4:0]). For description on the
usage of DMA, refer to Section 13.5 on Page
101.
A simple example of transmitting data is shown
in Figure 49. This example does not use DMA.
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CC1110Fx / CC1111Fx
; Tranmit the following data: 0x02, 0x12, 0x34
; (Assume that the radio has already been configured, the high speed
; crystal oscillator is selected as system clock, and CLKCON.CLKSPD=000)
C1:
C2:
C3:
MOV
JNB
CLR
MOV
JNB
CLR
MOV
JNB
CLR
MOV
RFST,#03H
RFTXRXIF,C1
RFTXRXIF
RFD,#02H
RFTXRXIF,C2
RFTXRXIF
RFD,#12H
RFTXRXIF,C3
RFTXRXIF
RFD,#34H
;
;
;
;
;
;
;
;
;
;
;
Start TX with STX command strobe
Wait for interrupt flag telling radio is
ready to accept data, then write first
data byte to radio (packet length = 2)
Wait for radio
Send first byte in payload
Wait for radio
Send second byte in payload
Done
Figure 49: Simple RF Transmit Example
14.5 Data Rate Programming
The data rate used when transmitting, or the
data rate expected in receive is programmed
by
the
MDMCFG3.DRATE_M
and
the
MDMCFG4.DRATE_E configuration registers.
The data rate is given by the formula below.
RDATA =
(256 + DRATE _ M ) ⋅ 2 DRATE _ E ⋅ f
2 28
ref
The following approach can be used to find
suitable values for a given data rate:
⎢
⎛R
⋅ 2 20 ⎞⎟⎥
DRATE _ E = ⎢log 2 ⎜ DATA
⎟⎥⎥
⎜
f ref
⎠⎦
⎝
⎣⎢
DRATE _ M =
RDATA ⋅ 2 28
− 256
f ref ⋅ 2 DRATE _ E
If DRATE_M is rounded to the nearest integer
and becomes 256, increment DRATE_E and
use DRATE_M=0.
Note that the maximum data rate will be limited
by the system clock speed. Please see
13.1.5.2 for more details.
14.6 Receiver Channel Filter Bandwidth
In order to meet different channel width
requirements, the receiver channel filter is
programmable. The MDMCFG4.CHANBW_E and
MDMCFG4.CHANBW_M configuration registers
control the receiver channel filter bandwidth.
The following formula gives the relation
between the register settings and the channel
filter bandwidth:
BWchannel =
f ref
8 ⋅ (4 + CHANBW _ M )·2CHANBW _ E
For best performance, the channel filter
bandwidth should be selected so that the
signal bandwidth occupies at most 80% of the
channel filter bandwidth. The channel centre
tolerance due to crystal accuracy should also
be subtracted from the signal bandwidth. The
following example illustrates this:
With the channel filter bandwidth set to 500
kHz, the signal should stay within 80% of 500
kHz, which is 400 kHz. Assuming 915 MHz
frequency and ±20 ppm frequency uncertainty
for both the transmitting device and the
receiving
device,
the
total
frequency
uncertainty is ±40 ppm of 915 MHz, which is
±37 kHz. If the whole transmitted signal
bandwidth is to be received within 400 kHz, the
transmitted signal bandwidth should be
maximum 400 kHz - 2·37 kHz, which is 326
kHz.
The CC1110Fx/CC1111Fx supports channel filter
bandwidths shown in Table 62 and Table 63
respectively.
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CC1110Fx / CC1111Fx
MDMCFG4.
MDMCFG4.CHANBW_E
MDMCFG4.
CHANBW_M
00
01
10
11
CHANBW_M
00
01
10
11
00
812
406
203
102
00
750
375
188
94
01
650
325
162
81
01
600
300
150
75
10
541
270
135
68
10
500
250
125
63
11
464
232
116
58
11
429
214
107
54
Table 62: Channel Filter Bandwidths [kHz]
(assuming fref = 26 MHz)
14.7
Table 63: Channel Filter Bandwidths [kHz]
(assuming fref = 24 MHz)
Demodulator, Symbol Synchronizer, and Data Decision
CC1110Fx/CC1111Fx contains an advanced and
highly configurable demodulator. Channel
filtering and frequency offset compensation is
performed digitally. To generate the RSSI level
(see Section 14.10.3 for more information) the
signal level in the channel is estimated. Data
filtering is also included for enhanced
performance.
14.7.1
MDMCFG4.CHANBW_E
Frequency Offset Compensation
14.7.2
The bit synchronization algorithm extracts the
clock from the incoming symbols. The
algorithm requires that the expected data rate
is programmed as described in Section 14.5
on Page 191. Re-synchronization is performed
continuously to adjust for error in the incoming
symbol rate.
14.7.3
When using 2-FSK, GFSK, or MSK
modulation, the demodulator will compensate
for the offset between the transmitter and
receiver frequency, within certain limits, by
estimating the centre of the received data. This
value is available in the FREQEST status
register. Writing the value from FREQEST into
FSCTRL0.FREQOFF
the
frequency
synthesizer is automatically adjusted according
to the estimated frequency offset.
The tracking range of the algorithm is
selectable as fractions of the channel
bandwidth with the FOCCFG.FOC_LIMIT
configuration register.
If the FOCCFG.FOC_BS_CS_GATE bit is set,
the offset compensator will freeze until carrier
sense asserts. This may be useful when the
radio is in RX for long periods with no traffic,
since the algorithm may drift to the boundaries
when trying to track noise.
The tracking loop has two gain factors, which
affects the settling time and noise sensitivity of
the algorithm. FOCCFG.FOC_PRE_K sets the
gain before the sync word is detected, and
FOCCFG.FOC_POST_K selects the gain after
the sync word has been found.
Note that frequency offset compensation is not
supported for ASK or OOK modulation.
Bit Synchronization
Byte Synchronization
Byte synchronization is achieved by a
continuous sync word search. The sync word
is a 16 bit configurable field (can be repeated
to get a 32 bit) that is automatically inserted at
the start of the packet by the modulator in
transmit mode. The demodulator uses this field
to find the byte boundaries in the stream of
bits. The sync word will also function as a
system identifier, since only packets with the
correct predefined sync word will be received if
the sync word detection in RX is enabled in
register MDMCFG2 (see Section 14.10.1). The
sync word detector correlates against the userconfigured 16 or 32 bit sync word. The
correlation threshold can be set to 15/16,
16/16, or 30/32 bits match. The sync word can
be further qualified using the preamble quality
indicator mechanism described below and/or a
carrier sense condition. The sync word is
configured through the SYNC1 and SYNC0
registers and is sent MSB first.
In order to make false detections of sync
words less likely, a mechanism called
preamble quality indication (PQI) can be used
to qualify the sync word. A threshold value for
the preamble quality must be exceeded in
order for a detected sync word to be accepted.
See Section 14.10.2 on Page 197 for more
details.
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CC1110Fx / CC1111Fx
14.8 Packet Handling Hardware Support
The CC1110Fx/CC1111Fx has built-in hardware
support for packet oriented radio protocols.
• Whitening of the data with a PN9
sequence.
In transmit mode, the packet handler can be
configured to add the following elements to the
packet:
• Forward error correction by the use of
interleaving and coding of the data
(convolutional coding).
• A programmable number of preamble
bytes
In receive mode, the packet handling support
will de-construct the data packet by
implementing the following (if enabled):
• A two byte synchronization (sync) word.
Can be duplicated to give a 4-byte sync
word (recommended). It is not possible
to only insert preamble or only insert a
sync word.
• Preamble detection
• Sync word detection
• CRC computation and CRC check
• A CRC checksum computed over the
data field
• One byte address check
• Packet length check (length byte
checked against a programmable
maximum length)
The recommended setting is 4-byte preamble
and 4-byte sync word, except for 500 kBaud
data rate where the recommended preamble
length is 8 bytes.
In addition, the following can be implemented
on the data field and the optional 2-byte CRC
checksum:
• De-whitening
• De-interleaving and decoding
Optionally, two status bytes (see Table 64 and
Table 65) with RSSI value, Link Quality
Indication, and CRC status can be appended
to the received packet.
Bit
Field Name
Description
7:0
RSSI
RSSI value
Table 64: Received Packet Status Byte 1
(first byte appended after the data)
Bit
Field name
Description
7
CRC_OK
1: CRC for received data OK (or
CRC disabled)
0: CRC error in received data
6:0
LQI
The
Link
Quality
Indicator
estimates how easily a received
signal can be demodulated
Table 65: Received Packet Status Byte 2
(second byte appended after the data)
Note that register fields that control the packet
handling features should only be altered when
CC1110Fx/CC1111Fx is in the IDLE state.
14.8.1
Data Whitening
From a radio perspective, the ideal over the air
data are random and DC free. This results in
the smoothest power distribution over the
occupied bandwidth. This also gives the
regulation loops in the receiver uniform
operation conditions (no data dependencies).
Real world data often contain long sequences
of zeros and ones. Performance can then be
improved by whitening the data before
transmitting, and de-whitening the data in the
receiver. With CC1110Fx/CC1111Fx, this can be
done
automatically
by
setting
PKTCTRL0.WHITE_DATA=1. All data, except
the preamble and the sync word, are then
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CC1110Fx / CC1111Fx
XOR-ed with a 9-bit pseudo-random (PN9)
sequence before being transmitted as shown
in Figure 50. At the receiver end, the data are
XOR-ed with the same pseudo-random
sequence. This way, the whitening is reversed,
and the original data appear in the receiver.
The PN9 sequence is reset to all 1’s.
Data whitening can only be used when
PKTCTRL0.CC2400_EN=0 (default).
Figure 50: Data Whitening in TX Mode
14.8.2
• Length byte or constant programmable
packet length
Packet Format
The format of the data packet can be
configured and consists of the following items:
• Optional Address byte
• Preamble
• Payload
• Synchronization word
• Optional 2 byte CRC
Data field
16/32 bits
8
bits
8
bits
8 x n bits
Legend:
Inserted automatically in TX,
processed and removed in RX.
CRC-16
Address field
8 x n bits
Length field
Preamble bits
(1010...1010)
Sync word
Optional data whitening
Optionally FEC encoded/decoded
Optional CRC-16 calculation
Optional user-provided fields processed in TX,
processed but not removed in RX.
Unprocessed user data (apart from FEC
and/or whitening)
16 bits
Figure 51: Packet Format
The preamble pattern is an alternating
sequence of ones and zeros (101010101…).
The minimum length of the preamble is
programmable through the NUM_PREAMBLE
field in the MDMCFG1 register. When enabling
TX, the modulator will start transmitting the
preamble. When the programmed number of
preamble bytes have been transmitted, the
modulator will send the sync word, and then
data from the RFD register. If no data has been
written to the RFD register when the radio is
done transmitting the programmed number of
preamble bytes, the modulator will continue to
send preamble bytes until the first byte is
written to RFD. It will then send the sync word
followed by the data written to RFD.
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CC1110Fx / CC1111Fx
The synch. word is a two-byte value set in the
SYNC1 and SYNC0 registers. The sync word
provides byte synchronization of the incoming
packet. A one-byte sync word can be emulated
by setting the SYNC1 value to the preamble
pattern. It is also possible to emulate a 32 bit
sync word by using MDMCFG2.SYNC_MODE set
to 3 or 7. The sync word will then be repeated
twice.
CC1110Fx/CC1111Fx supports both fixed packet
length protocols and variable packet length
protocols. Variable or fixed packet length mode
can be used for packets up to 255 bytes.
Fixed packet length mode is selected by
setting PKTCTRL0.LENGTH_CONFIG=0. The
desired packet length is set by the PKTLEN
register.
In
variable
packet
length
mode,
PKTCTRL0.LENGTH_CONFIG=1, the packet
length is configured by the first byte after the
sync word. The packet length is defined as the
payload data, excluding the length byte and
the optional CRC. The PKTLEN register is
used to set the maximum packet length
allowed in RX. Any packet received with a
length byte with a value greater than PKTLEN
will be discarded.
14.8.3
Packet Filtering in Receive Mode
CC2500 supports two different types of packetfiltering: address filtering and maximum length
filtering.
14.8.3.1
Address Filtering
Setting PKTCTRL1.ADR_CHK to any other
value than zero enables the packet address
filter. The packet handler engine will compare
the destination address byte in the packet with
the programmed node address in the ADDR
register and the 0x00 broadcast address when
PKTCTRL1.ADR_CHK=10 or both 0x00 and
0xFF
broadcast
addresses
when
PKTCTRL1.ADR_CHK=11. If the received
address matches a valid address, the packet is
accepted and the RFTXRXIF flag is asserted
and a DMA trigger is generated. If the address
match fails, the packet is discarded and
receive mode restarted (regardless of the
MCSM1.RXOFF_MODE
setting).
The
RFIF.IRQ_DONE flag will be asserted but the
DMA will not be triggered.
14.8.3.2
Maximum Length Filtering
In
variable
packet
length
mode,
PKTCTRL0.LENGTH_CONFIG=1,
the
PKTLEN.PACKET_LENGTH register value is
used to set the maximum allowed packet
length. If the received length byte has a larger
value than this, the packet is discarded and
receive mode restarted (regardless of the
MCSM1.RXOFF_MODE
setting).
The
RFIF.IRQ_DONE flag will be asserted but the
DMA will not be triggered.
14.8.4
Packet Handling in Transmit Mode
The payload that is to be transmitted must be
written into RFD. The first byte written must be
the length byte when variable packet length is
enabled. The length byte has a value equal to
the payload of the packet (including the
optional address byte). If fixed packet length is
enabled, then the first byte written to RFD is
interpreted as the destination address, if this
feature is enabled in the device that receives
the packet.
The modulator will first send the programmed
number of preamble bytes. If data has been
written to RFD, the modulator will send the twobyte (optionally 4-byte) sync word and then the
content of the RFD register. If CRC is enabled,
the checksum is calculated over all the data
pulled from the RFD register and the result is
sent as two extra bytes following the payload
data. If fewer bytes are written to the RFD
registers than what the radio expects the radio
will enter TX_UNDERFLOW state and the
RFIF.IRQ_TXUNF flag will be set together
with RFIF.IRQ_DONE. An SIDLE strobe needs
to be issued to return to IDLE state.
If whitening is enabled, everything following
the sync words will be whitened. This is done
before the optional FEC/Interleaver stage.
Whitening
is
enabled
by
setting
PKTCTRL0.WHITE_DATA=1.
If FEC/Interleaving is enabled, everything
following the sync words will be scrambled by
the interleaver and FEC encoded before being
modulated. FEC is enabled by setting
MDMCFG1.FEC_EN=1.
14.8.5
Packet Handling in Receive Mode
In receive mode, the demodulator and packet
handler will search for a valid preamble and
the sync word. When found, the demodulator
has obtained both bit and byte synchronism
and will receive the first payload byte.
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CC1110Fx / CC1111Fx
If FEC/Interleaving is enabled, the FEC
decoder will start to decode the first payload
byte. The interleaver will de-scramble the bits
before any other processing is done to the
data.
If whitening is enabled, the data will be dewhitened at this stage.
When variable packet length mode is enabled,
the first byte is the length byte. The packet
handler stores this value as the packet length
and receives the number of bytes indicated by
the length byte. If fixed packet length mode is
used, the packet handler will accept the
programmed number of bytes.
address matches. If automatic CRC check is
enabled, the packet handler computes CRC
and matches it with the appended CRC
checksum.
At the end of the payload, the packet handler
will optionally write two extra packet status
bytes that contain CRC status, link quality
indication and RSSI value.
If a byte is received in the RFD register, and it
is not read before the next byte is received, the
radio will enter RX_OVERFLOW state and the
RFIF.IRQ_RXOVF flag will be set together
with RFIF.IRQ_DONE. An SIDLE strobe needs
to be issued to return to IDLE state.
Next, the packet handler optionally checks the
address and only continues the reception if the
14.9 Modulation Formats
CC1110Fx/CC1111Fx supports frequency and
phase shift modulation formats. The desired
modulation
format
is
set
in
the
MDMCFG2.MOD_FORMAT register.
14.9.1
Optionally, the data stream can be Manchester
coded by the modulator and decoded by the
demodulator. This option is enabled by setting
MDMCFG2.MANCHESTER_EN=1.
Manchester
encoding is not supported at the same time as
using the FEC/Interleaver option.
The frequency deviation is programmed with
the DEVIATION_M and DEVIATION_E values
in the DEVIATN register. The value has an
exponent/mantissa form, and the resultant
deviation is given by:
Frequency Shift Keying
2-FSK can optionally be shaped by a Gaussian
filter with BT=1, producing a GFSK modulated
signal.
f dev =
f ref
217
⋅ (8 + DEVIATION _ M ) ⋅ 2 DEVIATION _ E
The symbol encoding is shown in Table 66.
Format
Symbol
Coding
2-FSK/GFSK
‘0’
–Deviation
‘1’
+Deviation
Table 66: Symbol Encoding for 2-FSK/GFSK Modulation
14.9.2
Minimum Shift Keying
20
When using MSK , the complete transmission
(preamble, sync word, and payload) will be
MSK modulated.
Phase shifts are performed with a constant
transition time.
20
The fraction of a symbol period used to change
the phase can be modified with the
DEVIATN.DEVIATION_M setting. This is
equivalent to changing the shaping of the
symbol.
The MSK modulation format implemented in
CC1110Fx/CC1111Fx inverts the sync word and
data compared to e.g. signal generators.
Identical to offset QPSK with half-sine
shaping (data coding may differ)
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CC1110Fx / CC1111Fx
14.9.3
The
Amplitude Modulation
CC1110Fx/CC1111Fx supports two different forms
of amplitude modulation: On-Off Keying (OOK)
and Amplitude Shift Keying (ASK).
OOK modulation simply turns on or off the PA
to modulate 1 and 0 respectively.
ASK
variant
supported
by
the
CC1110Fx/CC1111Fx allows programming of the
modulation depth (the difference between 1
and 0), and shaping of the pulse amplitude.
Pulse shaping will produce a more bandwidth
constrained output spectrum.
14.10 Received Signal Qualifiers and Link Quality Information
CC1110Fx/CC1111Fx has several qualifiers that
can be used to increase the likelihood that a
valid sync word is detected.
14.10.1 Sync Word Qualifier
If sync word detection in RX is enabled in
register MDMCFG2 the CC1110Fx/CC1111Fx will not
start writing received data to the RFD register
and perform the packet filtering described in
Section 14.8.3 before a valid sync word has
been detected. The sync word qualifier mode
is set by MDMCFG2.SYNC_MODE and is
summarized in Table 67. Carrier sense in
Table 67 is described in Section 14.10.4.
MDMCFG2.
Sync Word Qualifier Mode
No preamble/sync
001
15/16 sync word bits detected
010
16/16 sync word bits detected
011
30/32 sync word bits detected
100
No preamble/sync, carrier sense
above threshold
101
15/16 + carrier sense above threshold
110
16/16 + carrier sense above threshold
111
30/32 + carrier sense above threshold
A “Preamble Quality Reached” signal can be
observed on P1_5, P1_6, or P1_7 by setting
IOCFGx.GDOx_CFG=1000. It is also possible
to determine if preamble quality is reached by
checking the PQT_REACHED bit in the
PKTSTATUS register. This signal / bit asserts
when the received signal exceeds the PQT.
14.10.3 RSSI
The RSSI value is an estimate of the signal
level in the chosen channel. This value is
based on the current gain setting in the RX
chain and the measured signal level in the
channel.
SYNC_MODE
000
is received that is the same as the last bit. The
threshold is configured with the register field
PKTCTRL1.PQT. A threshold of 4·PQT for this
counter is used to gate sync word detection.
By setting the value to zero, the preamble
quality qualifier of the sync word is disabled.
In RX mode, the RSSI value can be read
continuously from the RSSI status register until
the demodulator detects a sync word (when
sync word detection is enabled). At that point
the RSSI readout value is frozen until the next
time the chip enters the RX state. The RSSI
value is in dBm with ½ dB resolution. The
RSSI update rate, fRSSI, depends on the
receiver filter bandwidth (BWchannel defined in
Section
14.6)
and
AGCCTRL0.FILTER_LENGTH.
Table 67: Sync Word Qualifier mode
14.10.2 Preamble Quality Threshold (PQT)
The Preamble Quality Threshold (PQT) syncword qualifier adds the requirement that the
received sync word must be preceded with a
preamble with a quality above a programmed
threshold.
Another use of the preamble quality threshold
is as a qualifier for the optional RX termination
timer. See Section 14.12.3 on Page 204 for
details.
The preamble quality estimator increases an
internal counter by one each time a bit is
received that is different from the previous bit,
and decreases the counter by 8 each time a bit
f RSSI =
2 ⋅ BWchannel
8 ⋅ 2 FILTER _ LENGTH
If PKTCTRL1.APPEND_STATUS is enabled the
RSSI value at sync word detection is
automatically added to the first byte appended
after the data payload.
The RSSI value read from the RSSI status
register is a 2’s complement number. The
following procedure can be used to convert the
RSSI reading to an absolute power level
(RSSI_dBm).
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CC1110Fx / CC1111Fx
1) Read the RSSI status register
4) Else if RSSI_dec < 128 then RSSI_dBm
= (RSSI_dec)/2 – RSSI_offset
2) Convert the reading from a hexadecimal
number
to
a
decimal
number
(RSSI_dec)
Table 68 provides typical values for the
RSSI_offset.
3) If RSSI_dec ≥ 128 then RSSI_dBm =
(RSSI_dec – 256)/2 – RSSI_offset
Figure 52 and Figure 53 shows typical plots of
RSSI readings as a function of input power
level for different data rates.
Data rate [kBaud]
RSSI_offset [dB], 315 MHz
RSSI_offset [dB], 433 MHz
RSSI_offset [dB], 868 MHz
1.2
74
75
73
38.4
73
74
73
250
74
73
77
Table 68: Typical RSSI_offset Values
0
-10
-20
-30
RSSI Readout [dBm]
-40
-50
-60
-70
-80
-90
-100
-110
-120
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
Input Power [dBm]
1.2 kBaud
38.4 kBaud
250 kBaud
Figure 52: Typical RSSI Value vs. Input Power Level for Different Data Rates at 433 MHz
0
-10
-20
RSSI Readout [dBm]
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
Input Power [dBm]
1.2 kBaud
38.4 kBaud
250 kBaud
Figure 53: Typical RSSI Value vs. Input Power Level for Different Data Rates at 868 MHz
SWRS033F
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CC1110Fx / CC1111Fx
14.10.4 Carrier Sense (CS)
The Carrier Sense (CS) flag is used as a sync
word qualifier and for CCA. The CS flag can be
set based on two conditions, which can be
individually adjusted:
• CS is asserted when the RSSI is above
a programmable absolute threshold, and
de-asserted when RSSI is below the
same threshold (with hysteresis).
show the typical RSSI readout values at the
CS threshold at 2.4 kBaud and 250 kBaud
data
rate
respectively.
The
default
CARRIER_SENSE_ABS_THR=0 (0 dB) and
MAGN_TARGET=11 (33 dB) have been used.
For other data rates the user must generate
similar tables to find the CS absolute
threshold.
MAX_DVGA_GAIN[1:0]
MAX_LNA_GAIN[2:0]
• CS is asserted when the RSSI has
increased with a programmable number
of dB from one RSSI sample to the next,
and de-asserted when RSSI has
decreased with the same number of dB.
This setting is not dependent on the
absolute signal level and is thus useful
to detect signals in environments with a
time varying noise floor.
Carrier Sense can be used as a sync word
qualifier that requires the signal level to be
higher than the threshold for a sync word
search to be performed. The signal can also
be observed on P1_5, P1_6, or P1_7 by
setting IOCFGx.GDOx_CFG=1110 and in the
status register bit PKTSTATUS.CS.
MAX_LNA_GAIN[2:0]
14.10.5 CS Absolute Threshold
The absolute threshold related to the RSSI
value depends on the following register fields:
•
AGCCTRL2.MAX_DVGA_GAIN
•
AGCCTRL1.CARRIER_SENSE_ABS_THR
•
AGCCTRL2.MAGN_TARGET
10
11
000
–99
–93
–87
–81.5
001
–97
–90.5
–85
–78.5
010
–93.5
–87
–82
–76
011
–91.5
–86
–80
–74
100
–90.5
–84
–78
–72.5
101
–88
–82.5
–76
–70
110
–84.5
–78.5
–73
–67
111
–82.5
–76
–70
–64
MAX_DVGA_GAIN[1:0]
CS can be used to avoid interference from
other RF sources in the ISM bands.
AGCCTRL2.MAX_LNA_GAIN
01
Table 69: Typical RSSI Value in dBm at CS
Threshold with Default MAGN_TARGET at 2.4
kBaud
Other uses of Carrier Sense include the TX-ifCCA function (see Section 14.10.7 on Page
200) and the optional fast RX termination (see
Section 14.12.3 on Page 204).
•
00
00
01
10
11
000
–96
–90
–84
–78.5
001
–94.5
–89
–83
–77.5
010
–92.5
–87
–81
–75
011
–91
–85
–78.5
–73
100
–87.5
–82
–76
–70
101
–85
–79.5
–73.5
–67.5
110
–83
–76.5
–70.5
–65
111
–78
–72
–66
–60
Table 70: Typical RSSI Value in dBm at CS
Threshold with Default MAGN_TARGET at 250
kBaud
For a given AGCCTRL2.MAX_LNA_GAIN and
AGCCTRL2.MAX_DVGA_GAIN
setting
the
absolute threshold can be adjusted ±7 dB in
steps
of
1
dB
using
CARRIER_SENSE_ABS_THR.
The MAGN_TARGET setting is a compromise
between blocker tolerance/selectivity and
sensitivity. The value sets the desired signal
level in the channel into the demodulator.
Increasing this value reduces the headroom for
blockers, and therefore close-in selectivity. It is
strongly recommended to use SmartRF®
Studio
[9]
to
generate
the
correct
MAGN_TARGET setting. Table 69 and Table 70
If the threshold is set high, i.e. only strong
signals are wanted, the threshold should be
adjusted upwards by first reducing the
MAX_LNA_GAIN
value
and
then
the
MAX_DVGA_GAIN value. This will reduce
power consumption in the receiver front end,
since the highest gain settings are avoided.
14.10.6 CS Relative Threshold
The relative threshold detects sudden changes
in the measured signal level. This setting is not
dependent on the absolute signal level and is
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CC1110Fx / CC1111Fx
thus useful to detect signals in environments
with a time varying noise floor. The register
field AGCCTRL1.CARRIER_SENSE_REL_THR
is used to enable/disable relative CS, and to
select threshold of 6 dB, 10 dB or 14 dB RSSI
change
Four CCA requirements can be programmed:
• Always (CCA disabled, always goes to
TX)
• If RSSI is below threshold
• Unless currently receiving a packet
• Both the above (RSSI below threshold
and not currently receiving a packet)
14.10.7 Clear Channel Assessment (CCA)
The Clear Channel Assessment CCA) is used
to indicate if the current channel is free or
busy. The current CCA state is viewable on
P1_5,
P1_6,
or
P1_7
by
setting
IOCFGx.GDOx_CFG=1001.
MCSM1.CCA_MODE selects the mode to use
when determining CCA.
When the STX or SFSTXON command strobe is
given while CC1110Fx/CC1111Fx is in the RX state,
the TX or FSTXON state is only entered if the
clear channel requirements are fulfilled. The
chip will otherwise remain in RX (if the channel
becomes available, the radio will not enter TX
or FSTXON state before a new strobe
command is being issued). This feature is
called TX-if-CCA. Note that when using this
function the register TEST1 on Page 224
should be set to 0x31.
14.10.8 Link Quality Indicator (LQI)
The Link Quality Indicator is a metric of the
current quality of the received signal. If
PKTCTRL1.APPEND_STATUS is enabled, the
value is automatically added to the last byte
appended after the payload. The value can
also be read from the LQI status register. The
LQI gives an estimate of how easily a received
signal can be demodulated by accumulating
the magnitude of the error between ideal
constellations and the received signal over the
64 symbols immediately following the sync
word. LQI is best used as a relative
measurement of the link quality (a high value
indicates a better link than what a low value
does), since the value is dependent on the
modulation format.
14.11 Forward Error Correction with Interleaving
14.11.1 Forward Error Correction (FEC)
CC1110Fx/CC1111Fx has built in support for
Forward Error Correction (FEC). To enable this
option, set MDMCFG1.FEC_EN to 1. FEC is
only supported in fixed packet length mode
(PKTCTRL0.LENGTH_CONFIG=0). FEC is
employed on the data field and CRC word in
order to reduce the gross bit error rate when
operating
near
the
sensitivity
limit.
Redundancy is added to the transmitted data
in such a way that the receiver can restore the
original data in the presence of some bit
errors.
The use of FEC allows correct reception at a
lower SNR, thus extending communication
range. Alternatively, for a given SNR, using
FEC decreases the bit error rate (BER). As the
packet error rate (PER) is related to BER by:
PER = 1 − (1 − BER) packet _ length ,
a lower BER can be used to allow longer
packets, or a higher percentage of packets of a
given length, to be transmitted successfully.
Finally, in realistic ISM radio environments,
transient and time-varying phenomena will
produce occasional errors even in otherwise
good reception conditions. FEC will mask such
errors and, combined with interleaving of the
coded data, even correct relatively long
periods of faulty reception (burst errors).
The FEC scheme adopted for CC1110Fx/CC1111Fx
is convolutional coding, in which n bits are
generated based on k input bits and the m
most recent input bits, forming a code stream
able to withstand a certain number of bit errors
between each coding state (the m-bit window).
The convolutional coder is a rate 1/2 code with
a constraint length of m=4. The coder codes
one input bit and produces two output bits;
hence, the effective data rate is halved. I.e. to
transmit at the same effective data rate when
using FEC, it is necessary to use twice as high
over-the-air data rate. This will require a higher
receiver bandwidth, and thus reduce
sensitivity. In other words, the improved
reception by using FEC and the degraded
sensitivity from a higher receiver bandwidth will
be counteracting factors.
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CC1110Fx / CC1111Fx
When FEC and interleaving is used at least
one extra byte is required for trellis termination.
In addition, the amount of data transmitted
over the air must be a multiple of the size of
the interleaver buffer (two bytes). The packet
control hardware therefore automatically
inserts one or two extra bytes at the end of the
packet, so that the total length of the data to be
interleaved is an even number. Note that these
extra bytes are invisible to the user, as they
are removed before the received packet enters
the RFD data register.
14.11.2 Interleaving
Data received through radio channels will often
experience burst errors due to interference and
time-varying signal strengths. In order to
increase the robustness to errors spanning
multiple bits, interleaving is used when FEC is
enabled. After de-interleaving, a continuous
span of errors in the received stream will
become single errors spread apart.
CC1110Fx/CC1111Fx employs matrix interleaving,
which is illustrated in Figure 54. The on-chip
interleaving and de-interleaving buffers are 4 x
4 matrices. In the transmitter, the data bits
from the rate ½ convolutional coder are written
into the rows of the matrix, whereas the bit
sequence to be transmitted is read from the
columns of the matrix. In the receiver, the
received symbols are written into the rows of
the matrix, whereas the data passed onto the
convolutional decoder is read from the
columns of the matrix.
When FEC and interleaving is used the
minimum data payload is 2 bytes.
Note:
When
using
FEC
(MDMCFG1.FEC_EN=1), CLKCON.CLKSPD
must be set to 000.
Interleaver
Write buffer
Packet
Engine
Interleaver
Read buffer
FEC
Encoder
Modulator
Interleaver
Write buffer
Interleaver
Read buffer
FEC
Decoder
Demodulator
Packet
Engine
Figure 54: General Principle of Matrix Interleaving
14.12 Radio Control
CC1110Fx/CC1111Fx has a built-in state machine
that is used to switch between different
operation states (modes). The change of state
is done either by using command strobes or by
internal events such as TX FIFO underflow.
Figure 48 on Page 187. The complete radio
control state diagram is shown in Figure 55.
The numbers refer to the state number
readable in the MARCSTATE status register.
This register is primarily for test purposes.
A simplified state diagram, together with typical
usage and current consumption, is shown in
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CC1110Fx / CC1111Fx
Figure 55: Complete Radio Control State Diagram
• Calibrate when going from IDLE to
either RX or TX (or FSTXON)
14.12.1 Active Modes
The radio has two active modes: receive and
transmit. These modes are activated directly
by writing the SRX and STX command strobes
to the RFST register.
The frequency synthesizer must be calibrated
regularly. CC1110Fx/CC1111Fx has one manual
calibration option (using the SCAL strobe), and
three automatic calibration options, controlled
by the MCSM0.FS_AUTOCAL setting:
• Calibrate when going from either RX or
TX to IDLE automatically
• Calibrate every fourth time when going
from either RX or TX to IDLE
automatically
If the radio goes from TX or RX to IDLE by
issuing an SIDLE strobe, calibration will not be
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CC1110Fx / CC1111Fx
performed. The calibration takes a constant
number of XOSC cycles (see Table 71 for
timing details).
When RX is activated, the chip will remain in
receive mode until a packet is successfully
received or the RX termination timer expires
(see Section 14.12.3). Note: the probability
that a false sync word is detected can be
reduced by using PQT, CS, maximum sync
word length, and sync word qualifier mode as
describe in Section 14.10.1. After a packet is
successfully received the radio controller will
then go to the state indicated by the
MCSM1.RXOFF_MODE setting. The possible
destinations are:
• IDLE
• FSTXON: Frequency synthesizer on and
ready at the TX frequency. Activate TX
with STX.
• TX: Start sending preambles
• RX: Start search for a new packet
Similarly, when TX is active the chip will
remain in the TX state until the current packet
has been successfully transmitted. Then the
state will change as indicated by the
MCSM1.TXOFF_MODE setting. The possible
destinations are the same as for RX.
It is possible to change the state from RX to
TX and vice versa by using the command
strobes. If the radio controller is currently in
transmit and an SRX strobe is written to the
RFST register, the current transmission will be
ended and the transition to RX will be done.
If the radio controller is in RX when the STX or
SFSTXON command strobes are used and
MCSM1.CCA_MODE≠00, the TX-if-CCA function
will be used. Note that for TX-if-CCA function
the register TEST1 on Page 224 TEST1 should
be set to 0x31. If the channel is not clear, the
chip will remain in RX. For more details on
clear channel assessment see Section 14.10.7
on Page 200 for details.
The SIDLE command strobe can always be
used to force the radio controller to go to the
IDLE state.
14.12.2 Timing
The radio controller controls most timing in
CC1110Fx/CC1111Fx,
such
as
synthesizer
calibration, PLL lock time and RX/TX
turnaround times. Timing from IDLE to RX and
IDLE to TX is constant, dependent on the auto
calibration setting. RX/TX and TX/RX
turnaround times are constant. The calibration
time is constant 18739 clock periods (fRef).
Table 71 shows the timing for key state
transitions.
Power on time and XOSC start-up times are
variable, but within the limits stated in Table 11
and Table 12
Note that in a frequency hopping spread
spectrum or a multi-channel protocol it is
possible to reduce the calibration time from
721 µs to approximately 150 µs. This is
explained in Section 14.18.2.
Transition Time
Description
fRef Periods
fRef
Idle to RX, no calibration
2298
88.4 µs
95.8 µs
Idle to RX, with calibration
~21037
809 µs
876.5 µs
Idle to TX/FSTXON, no
calibration
2298
88.4 µs
95.8 µs
Idle to TX/FSTXON, with
calibration
~21037
809 µs
876.5 µs
TX to RX switch
560
21.5 µs
23.3 µs
RX to TX switch
250
9.6 µs
10.4 µs
RX or TX to IDLE, no calibration
2
0.1 µs
0.1 µs
RX or TX to IDLE, with calibration
~18739
721 µs
780.8 µs
Manual calibration
~18739
721 µs
780.8 µs
= 26 MHz
fRef
= 24 MHz
Table 71: State Transition Timing
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CC1110Fx / CC1111Fx
If the system can expect the transmission to
have started when enabling the receiver, the
MCSM2.RX_TIME_RSSI function can be used.
The radio controller will then terminate RX if
the first valid carrier sense sample indicates no
carrier (RSSI below threshold). See Section
14.10.4 on Page 199 for details on Carrier
Sense.
14.12.3 RX Termination Timer
CC1110Fx/CC1111Fx has optional functions for
automatic termination of RX after a
programmable time. The termination timer
starts when in RX state. The timeout is
programmable with the MCSM2.RX_TIME
setting. When the timer expires, the radio
controller will check the condition for staying in
RX; if the condition is not met, RX will
terminate.
For ASK/OOK modulation, lack of carrier
sense is only considered valid after eight
symbol
periods.
Thus,
the
MCSM2.RX_TIME_RSSI function can be used
in ASK/OOK mode when the distance between
“1” symbols is 8 or less.
The programmable conditions are:
• MCSM2.RX_TIME_QUAL=0:
Continue
receive if sync word has been found
If RX terminates due to no carrier sense when
the MCSM2.RX_TIME_RSSI function is used,
or if no sync word was found when using the
MCSM2.RX_TIME timeout function, the chip will
always go back to IDLE.
• MCSM2.RX_TIME_QUAL=1:
Continue
receive if sync word has been found or
preamble quality is above threshold
(PQT)
14.13 Frequency Programming
The
frequency
programming
in
The base or start frequency is set by the 24 bit
frequency word located in the FREQ2, FREQ1
and FREQ0 registers. This word will typically be
set to the centre of the lowest channel
frequency that is to be used.
CC1110Fx/CC1111Fx is designed to minimize the
programming needed in a channel-oriented
system.
To set up a system with channel numbers, the
desired channel spacing is programmed with
the
MDMCFG0.CHANSPC_M
and
MDMCFG1.CHANSPC_E registers. The channel
spacing registers are mantissa and exponent
respectively.
f carrier =
f ref
216
(
(
⋅ FREQ + CHAN ⋅ ( 256 + CHANSPC _ M ) ⋅ 2 CHANSPC _ E − 2
With a reference frequency, fRef, equal to 26
MHz, the maximum channel spacing is 405
kHz. To get e.g. 1 MHz channel spacing one
solution is to use 333 kHz channel spacing and
select each third channel in CHANNR.CHAN.
The preferred IF frequency is programmed
with the FSCTRL1.FREQ_IF register. The IF
frequency is given by:
f IF =
The desired channel number is programmed
with the 8-bit channel number register,
CHANNR.CHAN, which is multiplied by the
channel offset. The resultant carrier frequency
is given by:
f ref
⋅ FREQ _ IF
210
))
Note that the SmartRF® Studio software [9]
automatically calculates the optimum register
setting based on channel spacing and channel
filter bandwidth.
If any frequency programming register is
altered when the frequency synthesizer is
running, the synthesizer may give an
undesired response. Hence, the frequency
programming should only be updated when the
radio is in the IDLE state.
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CC1110Fx / CC1111Fx
14.14 VCO
The VCO is completely integrated on-chip.
14.14.1 VCO and PLL Self-Calibration
The VCO characteristics will vary with
temperature and supply voltage changes, as
well as the desired operating frequency. In
order
to
ensure
reliable
operation,
CC1110Fx/CC1111Fx
includes
frequency
synthesizer self-calibration circuitry. This
calibration should be done regularly, and must
be performed after turning on power and
before using a new frequency (or channel).
The number of fRef periods for completing the
PLL calibration is given in Table 71 on Page
203.
The calibration can be initiated automatically or
manually.
The
synthesizer
can
be
automatically calibrated each time the
synthesizer is turned on, or each time the
synthesizer is turned off automatically. This is
configured with the MCSM0.FS_AUTOCAL
register setting. In manual mode, the
calibration is initiated when the SCAL
command strobe is activated in the IDLE
mode.
Note that the calibration values are maintained
in power-down modes PM1/2/3, so the
calibration is still valid after waking up from
these power-down modes (unless supply
voltage or temperature has changed
significantly).
14.15 Output Power Programming
The RF output power level from the device has
two levels of programmability, as illustrated in
Figure 56. Firstly, the PA_TABLE7 PA_TABLE0 registers can hold up to eight user
selected output power settings. Secondly, the
3-bit FREND0.PA_POWER value selects the
PA_TABLE7 - PA_TABLE0 register to use. This
two-level functionality provides flexible PA
power ramp up and ramp down at the start and
end of transmission, as well as ASK
modulation shaping. All the PA power settings
in the PA_TABLE7 - PA_TABLE0 registers,
from index 0 up to the index set by
FREND0.PA_POWER, values are used.
315 MHz
The power ramping at the start and at the end
of a packet can be turned off by setting
FREND0.PA_POWER to zero and then program
the desired output power to PA_TABLE0
register.
If OOK modulation is used, the logic 0 and
logic 1 power levels shall be programmed to
index 0 and 1 respectively, i.e. PA_TABLE0
and PA_TABLE1.
Table 72 contains recommended PA_TABLE
settings for various output levels and
frequency bands. Using PA settings from 0x68
to 0x6F is not recommended.
433 MHz
868 MHz
915 MHz
Output
Power
[dBm]
Setting
Current
Consumption,
Typ. [mA]
Setting
Current
Consumption,
Typ. [mA]
Setting
Current
Consumption,
Typ. [mA]
Setting
Current
Consumption,
Typ. [mA]
–30
0x12
14
0x12
15
0x03
16
0x03
16
–20
0x0D
15
0x0E
16
0x0E
17
0x0D
16
–15
0x1C
16
0x1D
16
0x1E
17
0x1D
17
–10
0x34
17
0x34
18
0x27
19
0x26
18
–5
0x2B
19
0x2C
20
0x8F
19
0x57
18
0
0x51
19
0x60
20
0x50
21
0x8E
21
5
0x85
22
0x84
23
0x84
25
0x83
25
7
0xCB
25
0xC8
28
0xCB
31
0xC7
31
10
0xC2
31
0xC0
33
0xC2
36
0xC0
36
Table 72: Optimum PA_TABLE Settings for Various Output Power Levels and Frequency Bands
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CC1110Fx / CC1111Fx
14.16 Shaping and PA Ramping
With ASK modulation, up to eight power
settings are used for shaping. The modulator
contains a counter that counts up when
transmitting a one and down when transmitting
a zero. The counter counts at a rate equal to 8
times the symbol rate. The counter saturates
at FREND0.PA_POWER and 0 respectively.
This counter value can be viewed as an index
for a lookup table in the power table (see
Figure 56). Thus, in order to utilize the whole
table, FREND0.PA_POWER should be 7 when
ASK is active. The shaping of the ASK signal
is dependent on the configuration of
PA_TABLE7 - PA_TABLE0 registers. Figure 57
shows some examples of ASK shaping.
PA_TABLE7[7:0]
The PA uses this
setting.
PA_TABLE6[7:0]
PA_TABLE5[7:0]
PA_TABLE4[7:0]
Settings 0 to PA_POWER are
used during ramp-up at start of
transmission and ramp-down at
end of transmission, and for
ASK/OOK modulation.
PA_TABLE3[7:0]
PA_TABLE2[7:0]
PA_TABLE1[7:0]
PA_TABLE0[7:0]
Index into PA_TABLE
The SmartRF® Studio software
should be used to obtain optimum
PA_TABLE settings for various
output powers.
e.g 6
PA_POWER[2:0]
in FREND0 register
Figure 56: PA_POWER and PA_TABLE
Output Power
PA_TABLE7
PA_TABLE6
PA_TABLE5
PA_TABLE4
PA_TABLE3
PA_TABLE2
PA_TABLE1
PA_TABLE0
1
0
0
1
0
1
1
0
Time
Bit Sequence
FREND0.PA_POWER = 3
FREND0.PA_POWER = 7
Figure 57: Shaping of ASK Signal
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CC1110Fx / CC1111Fx
14.17 Selectivity
Figure 58 to Figure 60 show the typical
selectivity performance (adjacent and alternate
rejection).
50.0
40.0
Selectivity [dB]
30.0
20.0
10.0
0.0
-0.5
-0.4
-0.3
-0.2
-0.1
0.0
0.1
0.2
0.4
0.5
-10.0
-20.0
Frequency offset [MHz]
Figure 58: Typical Selectivity at 1.2 kBaud @ 868 MHz. IF Frequency is 152 kHz.
MDMCFG2.DEM_DCFILT_OFF=0
50.0
40.0
Selectivity [dB]
30.0
20.0
10.0
0.0
-1.0
-0.8
-0.5
-0.4
-0.3
-0.2
-0.1
0.0
0.1
0.2
0.4
0.5
0.8
1.0
-10.0
-20.0
Frequency offset [MHz]
Figure 59: Typical Selectivity at 38.4 kBaud@ 868 MHz. IF Frequency is 152 kHz.
MDMCFG2.DEM_DCFILT_OFF=0
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CC1110Fx / CC1111Fx
50.0
40.0
Selectivity [dB]
30.0
20.0
10.0
0.0
-3.00
-2.25
1.50
-1.00
-0.75
0.00
0.75
1.00
1.50
2.25
3.00
-10.0
-20.0
Frequency offset [MHz]
Figure 60: Typical Selectivity at 250 kBaud @ 868 MHz. IF Frequency is 304 kHz.
MDMCFG2.DEM_DCFILT_OFF=0
14.18 System Considerations and Guidelines
14.18.1 SRD/ISM Regulations
International regulations and national laws
regulate the use of radio receivers and
transmitters. Short Range Devices (SRDs) for
license free operation below 1 GHz are usually
operated in the 315 MHz, 433 MHz, 868 MHz
or 915 MHz frequency bands. The
CC1110Fx/CC1111Fx is specifically designed for
such use with its 300 - 348 MHz, 391 - 464
MHz, and 782 - 928 MHz operating ranges.
The most important regulations when using the
CC1110Fx/CC1111Fx in the 433 MHz, 868 MHz, or
915 MHz frequency bands are EN 300 220
(Europe) and FCC CFR47 part 15 (USA). A
summary of the most important aspects of
these regulations can be found in [10] or [11].
Please note that compliance with regulations is
dependent on complete system performance.
It is the customer’s responsibility to ensure that
the system complies with regulations.
14.18.2 Frequency Hopping
Channel Systems
and
Multi-
The 433 MHz, 868 MHz, or 915 MHz are
shared by many systems both in industrial,
office and home environments. It is therefore
recommended to use frequency hopping
spread spectrum (FHSS) or a multi-channel
protocol because the frequency diversity
makes the system more robust with respect to
interference from other systems operating in
the same frequency band. FHSS also combats
multipath fading.
Charge pump current, VCO current and VCO
capacitance array calibration data is required
for each frequency when implementing
frequency hopping for CC1110Fx/CC1111Fx. There
are 3 ways of obtaining the calibration data
from the chip:
1) Frequency hopping with calibration for each
hop. The PLL calibration time is approximately
720 µs and the blanking interval between each
frequency hop is then approximately 810 µs
when fRef is 26 MHz. When fRef is 24 MHz,
these numbers are 780 µs and 875 µs
respectively.
2) Fast frequency hopping without calibration
for each hop can be done by calibrating each
frequency at startup and saving the resulting
FSCAL3, FSCAL2 and FSCAL1 register values
in memory. Between each frequency hop, the
calibration process can then be replaced by
writing the FSCAL3, FSCAL2 and FSCAL1
register values corresponding to the next RF
frequency. The PLL turn on time is
approximately 90 µs when fRef is 26 MHz and
95 µs when fRef is 24 MHz. The blanking
interval between each frequency hop is then
approximately equal to the PLL turn on time.
The VCO current calibration result is available
in FSCAL2 and is not dependent on the RF
frequency. Neither is the charge pump current
calibration result available in FSCAL3. The
same value can therefore be used for all
frequencies.
3) Run calibration on a single frequency at
startup. Next write 0 to FSCAL3[5:4] to
disable the charge pump calibration. After
writing to FSCAL3[5:4] strobe SRX (or STX)
with MCSM0.FS_AUTOCAL=1 for each new
frequency hop. That is, VCO current and VCO
capacitance calibration is done but not charge
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CC1110Fx / CC1111Fx
pump current calibration. When charge pump
current calibration is disabled the calibration
time is reduced from approximately 720 µs to
approximately 150 µs when fRef is 26 MHz and
from 780 µs to 163 µs when fRef is 24 MHz.
The blanking interval between each frequency
hop is then approximately 240 µs us and 260
µs respectively.
There is a trade off between blanking time and
memory space needed for storing calibration
data in non-volatile memory. Solution 2) above
gives the shortest blanking interval, but
requires more memory space to store
calibration
values.
Solution
3)
gives
approximately 570 µs smaller blanking interval
than solution 1 when fRef is 24 MHz and
approximately 615 µs smaller blanking interval
than solution 1 when fRef is 24 MHz ).
14.18.3 Wideband Modulation
Spread Spectrum
not
Using
Digital modulation systems under FCC part
15.247 includes 2-FSK and GFSK modulation.
A maximum peak output power of 1 W (30
dBm) is allowed if the 6 dB bandwidth of the
modulated signal exceeds 500 kHz. In
addition, the peak power spectral density
conducted to the antenna shall not be greater
than 8 dBm in any 3 kHz band. Pleas refer to
DN006 [12] for further details concerning
wideband modulation and CC1110Fx/CC1111Fx.
Operating with high frequency separation, the
CC1110Fx/CC1111Fx is suited for systems
targeting compliance with digital modulation
systems as defined by FCC part 15.247. An
external power amplifier is needed to increase
the output above 10 dBm.
14.18.5 Crystal Drift Compensation
The CC1110Fx/CC1111Fx has a very fine frequency
resolution (see Table 16). This feature can be
used to compensate for frequency offset and
drift.
The frequency offset between an ‘external’
transmitter and the receiver is measured in the
CC1110Fx/CC1111Fx and can be read back from
the FREQEST status register as described in
Section 14.7.1. The measured frequency offset
can be used to calibrate the frequency using
the ‘external’ transmitter as the reference. That
is, the received signal of the device will match
the receiver’s channel filter better. In the same
way the centre frequency of the transmitted
signal will match the ‘external’ transmitter’s
signal.
14.18.6 Spectrum Efficient Modulation
CC1110Fx/CC1111Fx also has the possibility to use
Gaussian shaped 2-FSK (GFSK). This
spectrum-shaping feature improves adjacent
channel power (ACP) and occupied bandwidth.
In ‘true’ 2-FSK systems with abrupt frequency
shifting, the spectrum is inherently broad. By
making the frequency shift ‘softer’, the
spectrum can be made significantly narrower.
Thus, higher data rates can be transmitted in
the same bandwidth using GFSK.
14.18.7 Low Cost Systems
A HC-49 type SMD crystal is used in the
CC1110EM reference design [1]. Note that the
crystal package strongly influences the price.
In a size constrained PCB design a smaller,
but more expensive, crystal may be used.
14.18.4 Data Burst Transmissions
14.18.8 Battery Operated Systems
The
In low power applications, PM2 or PM3 should
be used when the CC1110Fx/CC1111Fx is not
active. The Sleep Timer can be used in PM2.
high
maximum
data
rate
of
CC1110Fx/CC1111Fx opens up for burst
transmissions. A low average data rate link
(e.g. 10 kBaud), can be realized using a higher
over-the-air data rate. Buffering the data and
transmitting in bursts at high data rate (e.g.
500 kBaud) will reduce the time in active
mode, and hence also reduce the average
current consumption significantly. Reducing
the time in active mode will reduce the
likelihood of collisions with other systems in
the same frequency range. Note that sensitivity
and thus transmission range is reduced in high
data rate bursts compared to lower data rates.
14.18.9 Increasing Output Power
In some applications it may be necessary to
extend the link range. Adding an external
power amplifier is the most effective way of
doing this.
The power amplifier should be inserted
between the antenna and the balun, and two
T/R switches are needed to disconnect the PA
in RX mode. See Figure 61.
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CC1110Fx / CC1111Fx
Antenna
Filter
PA
CC1110Fx /
Balun
T/R
switch
CC1111Fx
T/R
switch
Figure 61: Block Diagram of CC1110Fx/CC1111Fx Usage with External Power Amplifier
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CC1110Fx / CC1111Fx
14.19 Radio Registers
This section describes all RF registers used for
control and status for the radio.
0xDF2F: IOCFG2 - Radio Test Signal Configuration (P1_7)
Bit
Field Name
7
Reset
R/W
Description
-
R0
Not used
6
GDO2_INV
0
R/W
Invert output, i.e. select active low (1) / high (0)
5:0
GDO2_CFG[5:0]
000000
R/W
Debug output on P1_7 pin. See Table 73 for a
description of internal signals which can be output on
this pin for debug purpose
0xDF30: IOCFG1 - Radio Test Signal Configuration (P1_6)
Bit
Field Name
Reset
R/W
Description
7
GDO_DS
0
R/W
Enable / disable drive strength enhancement for all port
outputs. To be used below 2.6 V
6
5:0
GDO1_INV
GDO1_CFG[5:0]
0
000000
R/W
R/W
0
Disable
1
Enable
Invert output
0
Active high
1
Active low
Debug output on P1_6 pin. See Table 73 for a
description of internal signals which can be output on
this pin for debug purpose
0xDF31: IOCFG0 - Radio Test Signal Configuration (P1_5)
Bit
Field Name
7
Reset
R/W
Description
-
R0
Not used
6
GDO0_INV
0
R/W
Invert output, i.e. select active low (1) / high (0)
5:0
GDO0_CFG[5:0]
000000
R/W
Debug output on P1_5 pin. See Table 73 for a
description of internal signals which can be output on
this pin for debug purpose.
0xDF00: SYNC1 - Sync Word, High Byte
Bit
Field Name
Reset
R/W
Description
7:0
SYNC[15:8]
0xD3
R/W
8 MSB of 16-bit sync word
0xDF01: SYNC0 - Sync Word, Low Byte
Bit
Field Name
Reset
R/W
Description
7:0
SYNC[7:0]
0x91
R/W
8 LSB of 16-bit sync word
0xDF02: PKTLEN - Packet Length
Bit
Field Name
Reset
R/W
Description
7:0
PACKET_LENGTH
0xFF
R/W
Indicates the packet length when fixed length packets
are enabled. If variable length packets are used, this
value indicates the maximum length packets allowed
SWRS033F
Page 211 of 242
CC1110Fx / CC1111Fx
0xDF03: PKTCTRL1 - Packet Automation Control
Bit
Field Name
Reset
R/W
Description
7:5
PQT[2:0]
000
R/W
Preamble quality estimator threshold. The preamble quality estimator
increases an internal counter by one each time a bit is received that is
different from the previous bit, and decreases the counter by 8 each
time a bit is received that is the same as the last bit.
A threshold of 4·PQT for this counter is used to gate sync word
detection. When PQT=0 a sync word is always accepted
4:3
-
R0
Not used
2
APPEND_STATUS
1
R/W
When enabled, two status bytes will be appended to the payload of the
packet. The status bytes contain RSSI and LQI values, as well as the
CRC OK flag
1:0
ADR_CHK[1:0]
00
R/W
Controls address check configuration of received packages.
00
No address check
01
Address check, no broadcast
10
Address check, 0 (0x00) broadcast
11
Address check, 0 (0x00) and 255 (0xFF) broadcast
0xDF04: PKTCTRL0 - Packet Automation Control
Bit
Field Name
7
6
5:4
WHITE_DATA
PKT_FORMAT[1:0]
3
2
1:0
CRC_EN
LENGTH_CONFIG[1:0]
Reset
R/W
Description
-
R0
Not used
1
R/W
Whitening enable. Data whitening can only be used when
PKTCTRL0.CC2400_EN=0 (default).
00
R/W
0
Disabled
1
Enabled
Packet format of RX and TX data
00
Normal mode
01
Reserved
10
Random TX mode; sends random data using PN9 generator.
Used for test.
Works as normal mode, setting 00, in RX.
11
Reserved
0
R/W
Reserved. Always write 0
1
R/W
CRC calculation in TX and CRC check in RX enable
01
R/W
0
Disable
1
Enable
Packet Length Configuration
00
Fixed packet length mode. Length configured in PKTLEN register
01
Variable packet length mode. Packet length configured by the
first byte after sync word
10
Reserved
11
Reserved
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Page 212 of 242
CC1110Fx / CC1111Fx
0xDF05: ADDR - Device Address
Bit
Field Name
Reset
R/W
Description
7:0
DEVICE_ADDR[7:0]
0x00
R/W
Address used for packet filtration. Optional broadcast addresses are 0
(0x00) and 255 (0xFF).
0xDF06: CHANNR - Channel Number
Bit
Field Name
Reset
R/W
Description
7:0
CHAN[7:0]
0x00
R/W
The 8-bit unsigned channel number, which is multiplied by the channel
spacing setting and added to the base frequency.
0xDF07: FSCTRL1 - Frequency Synthesizer Control
Bit
Reset
R/W
Description
7:6
-
R0
Not used
5
0
R/W
Reserved
01111
R/W
The desired IF frequency to employ in RX. Subtracted from FS base
frequency in RX and controls the digital complex mixer in the
demodulator.
4:0
Field Name
FREQ_IF[4:0]
f IF =
f ref
210
⋅ FREQ _ IF
The default value gives an IF frequency of 381 kHz when fRef = 26 MHz
and 352 kHz when fRef = 24 MHz.
0xDF08: FSCTRL0 - Frequency Synthesizer Control
Bit
Field Name
Reset
R/W
Description
7:0
FREQOFF[7:0]
0x00
R/W
Frequency offset added to the base frequency before being used by the
FS. (2’s complement).
14
Resolution is fRef /2
Range is ±202 kHz to ±209 kHz for CC1110Fx and ±186 kHz for CC1111Fx
0xDF09: FREQ2 - Frequency Control Word, High Byte
Bit
Field Name
Reset
R/W
Description
7:6
FREQ[23:22]
01
R
FREQ[23:22]
5:0
FREQ[21:16]
11110
R/W
FREQ[23:0] is the base frequency for the frequency synthesizer in
16
increments of fRef /2 .
f carrier =
f ref
216
⋅ FREQ[23 : 0]
0xDF0A: FREQ1 - Frequency Control Word, Middle Byte
Bit
Field Name
Reset
R/W
Description
7:0
FREQ[15:8]
11000100
R/W
Ref. FREQ2 register
0xDF0B: FREQ0 - Frequency Control Word, Low Byte
Bit
Field Name
Reset
R/W
Description
7:0
FREQ[7:0]
11101100
R/W
Ref. FREQ2 register
SWRS033F
Page 213 of 242
CC1110Fx / CC1111Fx
0xDF0C: MDMCFG4 - Modem configuration
Bit
Field Name
Reset
R/W
7:6
CHANBW_E[1:0]
10
R/W
5:4
CHANBW_M[1:0]
00
R/W
Description
Sets the decimation ratio for the delta-sigma ADC input stream and thus the
channel bandwidth.
BWchannel =
f ref
8 ⋅ (4 + CHANBW _ M )·2 CHANBW _ E
The default values give 203 kHz channel filter bandwidth when fRef = 26 MHz
and 188 kHz when fRef = 24 MHz.
3:0
DRATE_E[3:0]
1100
R/W
The exponent of the user specified symbol rate.
0xDF0D: MDMCFG3 - Modem Configuration
Bit
Field Name
Reset
R/W
Description
7:0
DRATE_M[7:0]
0x22
R/W
The mantissa of the user specified symbol rate. The symbol rate is configured
using an unsigned, floating-point number with 9-bit mantissa and 4-bit
th
exponent. The 9 bit is a hidden ‘1’. The resulting data rate is:
RDATA =
(256 + DRATE _ M ) ⋅ 2 DRATE _ E ⋅ f
2 28
ref
The default values give a data rate of 115.051 kBaud when fRef = 26 MHz and
106.201 kHz when fRef = 24 MHz.
SWRS033F
Page 214 of 242
CC1110Fx / CC1111Fx
0xDF0E: MDMCFG2 - Modem Configuration
Bit
Field Name
Reset
R/W
Description
7
DEM_DCFILT_OFF
0
R/W
Disable digital DC blocking filter before demodulator. The recommended IF
frequency changes when the DC blocking is disabled. Please use SmartRF®
Studio [9] to calculate correct register setting.
6:4
MOD_FORMAT[2:0]
000
R/W
0
Enable
Better Sensitivity
1
Disable
Current optimized. Only for data rates ≤ 100 kBaud
The modulation format of the radio signal
000
2-FSK
001
GFSK
010
Reserved
011
ASK/OOK
100
Reserved
101
Reserved
110
Reserved
111
MSK
Note that MSK is only supported for data rates above 26 kBaud and GFSK,
ASK , and OOK is only supported for data rate up until 250 kBaud
3
2:0
MANCHESTER_EN
SYNC_MODE[2:0]
0
010
R/W
R/W
Manchester encoding/decoding enable
0
Disable
1
Enable
Sync-word qualifier mode.
The values 000 and 100 disables preamble and sync word transmission in
TX and preamble and sync word detection in RX.
The values 001, 010, 101 and 110 enables 16-bit sync word transmission in
TX and 16-bits sync word detection in RX. Only 15 of 16 bits need to match
in RX when using setting 001 or 101. The values 011 and 111 enables
repeated sync word transmission in TX and 32-bits sync word detection in
RX (only 30 of 32 bits need to match).
000
No preamble/sync
001
15/16 sync word bits detected
010
16/16 sync word bits detected
011
30/32 sync word bits detected
100
No preamble/sync, carrier-sense above threshold
101
15/16 + carrier-sense above threshold
110
16/16 + carrier-sense above threshold
111
30/32 + carrier-sense above threshold
SWRS033F
Page 215 of 242
CC1110Fx / CC1111Fx
0xDF0F: MDMCFG1 - Modem Configuration
Bit
Field Name
Reset
R/W
Description
7
FEC_EN
0
R/W
Enable Forward Error Correction (FEC) with interleaving for packet
payload. FEC is only supported for fixed packet length mode, i.e.
PKTCTRL0.LENGTH_CONFIG=0
6:4
NUM_PREAMBLE[2:0]
3:2
1:0
CHANSPC_E[1:0]
010
R/W
0
Disable
1
Enable
Sets the minimum number of preamble bytes to be transmitted
000
2
001
3
010
4
011
6
100
8
101
12
110
16
111
24
-
R0
Not used
10
R/W
2 bit exponent of channel spacing
0xDF10: MDMCFG0 - Modem Configuration
Bit
Field Name
Reset
R/W
Description
7:0
CHANSPC_M[7:0]
0xF8
R/W
8-bit mantissa of channel spacing (initial 1 assumed). The channel
spacing is multiplied by the channel number CHAN and added to the base
frequency. It is unsigned and has the format:
f ref
∆f CHANNEL =
218
⋅ (256 + CHANSPC _ M ) ⋅ 2 CHANSPC _ E
The default values give 199.951 kHz channel spacing when fRef = 26
MHz and 184.570 kHz when fRef = 24 MHz.
0xDF11: DEVIATN - Modem Deviation Setting
Bit
Field Name
7
6:4
DEVIATION_E[2:0]
3
2:0
DEVIATION_M[2:0]
Reset
R/W
Description
-
R0
Not used
100
R/W
Deviation exponent
-
R0
Not used
111
R/W
When MSK modulation is enabled:
Sets fraction of symbol period used for phase change. Refer to the
SmartRF® Studio software [9] for correct DEVIATN setting when using
MSK.
When 2-FSK/GFSK modulation is enabled:
Deviation mantissa, interpreted as a 4-bit value with MSB implicit 1. The
resulting deviation is given by:
f dev =
f ref
217
⋅ (8 + DEVIATION _ M ) ⋅ 2 DEVIATION _ E
The default values give ±47.607 kHz deviation when fRef = 26 MHz and
43.945 kHz when fRef = 24 MHz.
SWRS033F
Page 216 of 242
CC1110Fx / CC1111Fx
0xDF12: MCSM2 - Main Radio Control State Machine Configuration
Bit
Field Name
7:5
Reset
R/W
Description
-
R0
Not used
4
RX_TIME_RSSI
0
R/W
Direct RX termination based on RSSI measurement (carrier sense). For
ASK/OOK modulation, RX times out if there is no carrier sense in the first 8
symbol periods.
3
RX_TIME_QUAL
0
R/W
When the RX_TIME timer expires the chip stays in RX mode if sync word
is found when RX_TIME_QUAL=0, or either sync word is found or PQT is
reached when RX_TIME_QUAL=1.
2:0
RX_TIME[2:0]
111
R/W
Timeout for sync word search in RX. The timeout is relative to the
programmed tEvent0.
The RX timeout in µs is given by EVENT0·C(RX_TIME, WOR_RES) ·26/X, where C is given by the table below and X is
the reference frequency (fRef) in MHz:
RX_TIME[2:0]
WOR_RES=0
WOR_RES=1
WOR_RES=2
WOR_RES=3
000
3.6058
18.0288
32.4519
46.8750
001
1.8029
9.0144
16.2260
23.4375
010
0.9014
4.5072
8.1130
11.7188
011
0.4507
2.2536
4.0565
5.8594
100
0.2254
1.1268
2.0282
2.9297
101
0.1127
0.5634
1.0141
1.4648
110
0.0563
0.2817
0.5071
0.7324
111
Until end of packet
As an example, EVENT0 = 34666, WOR_RES = 0 and RX_TIME = 6 corresponds to 1.96 ms RX timeout
0xDF13: MCSM1 - Main Radio Control State Machine Configuration
Bit
Field Name
7:6
5:4
3:2
CCA_MODE[1:0]
RXOFF_MODE[1:0]
Reset
R/W
Description
-
R0
Not used
11
R/W
Selects CCA_MODE; Reflected in CCA signal
00
R/W
00
Always
01
If RSSI below threshold
10
Unless currently receiving a packet
11
If RSSI below threshold unless currently receiving a packet
Select what should happen (next state) when a packet has been received
00
IDLE
01
FSTXON
10
TX
11
Stay in RX
It is not possible to set RXOFF_MODE to be TX or FSTXON and at the same
time use CCA.
1:0
TXOFF_MODE[1:0]
00
R/W
Select what should happen (next state) when a packet has been sent (TX)
00
IDLE
01
FSTXON
10
Stay in TX (start sending preamble)
11
RX
SWRS033F
Page 217 of 242
CC1110Fx / CC1111Fx
0xDF14: MCSM0 - Main Radio Control State Machine Configuration
Bit
Field Name
7:6
5:4
FS_AUTOCAL[1:0]
Reset
R/W
Description
-
R0
Not used
00
R/W
Select calibration mode (when to calibrate)
00
Never (manually calibrate using SCAL strobe)
01
When going from IDLE to RX or TX (or FSTXON)
10
When going from RX or TX back to IDLE automatically
11
Every 4th time when going from RX or TX to IDLE automatically
3
0
R/W
Reserved. Refer to SmartRF® Studio software [9] for settings.
2
1
R/W
Reserved. Refer to SmartRF® Studio software [9] for settings.
00
R/W
Sets RX attenuation. Used in order to avoid saturation in RX when two or
more chips are close (within ~3 m).
1:0
CLOSE_IN_RX[1:0]
RX attenuation, typical values:
00
0 dB
01
6 dB
10
12 dB
11
18 dB
0xDF15: FOCCFG - Frequency Offset Compensation Configuration
Bit
Field Name
Reset
R/W
Description
7
-
R0
Not used
6
1
R/W
Reserved. Always write 0
5
FOC_BS_CS_GATE
1
R/W
If set, the demodulator freezes the frequency offset compensation and
clock recovery feedback loops until the CARRIER_SENSE signal goes
high.
4:3
FOC_PRE_K[1:0]
10
R/W
The frequency compensation loop gain to be used before a sync word is
detected.
2
1:0
FOC_POST_K
FOC_LIMIT[1:0]
1
10
R/W
R/W
00
K
01
2K
10
3K
11
4K
The frequency compensation loop gain to be used after a sync word is
detected.
0
Same as FOC_PRE_K
1
K/2
The saturation point for the frequency offset compensation algorithm:
00
±0 (no frequency offset compensation)
01
±BWCHAN / 8
10
±BW CHAN / 4
11
±BW CHAN / 2
Frequency offset compensation is not supported for ASK/OOK; Always use
FOC_LIMIT=0 with these modulation formats.
SWRS033F
Page 218 of 242
CC1110Fx / CC1111Fx
0xDF16: BSCFG - Bit Synchronization Configuration
Bit
Field Name
Reset
R/W
Description
7:6
BS_PRE_KI[1:0]
01
R/W
The clock recovery feedback loop integral gain to be used before a sync word
is detected (used to correct offsets in data rate):
5:4
3
2
1:0
BS_PRE_KP[1:0]
BS_POST_KI
BS_POST_KP
BS_LIMIT[1:0]
10
1
1
00
R/W
R/W
R/W
R/W
00
KI
01
2KI
10
3KI
11
4KI
The clock recovery feedback loop proportional gain to be used before a sync
word is detected
00
KP
01
2KP
10
3KP
11
4KP
The clock recovery feedback loop integral gain to be used after a sync word is
detected.
0
Same as BS_PRE_KI
1
KI /2
The clock recovery feedback loop proportional gain to be used after a sync
word is detected.
0
Same as BS_PRE_KP
1
KP
The saturation point for the data rate offset compensation algorithm:
00
±0 (No data rate offset compensation performed)
01
±3.125% data rate offset
10
±6.25% data rate offset
11
±12.5% data rate offset
SWRS033F
Page 219 of 242
CC1110Fx / CC1111Fx
0xDF17: AGCCTRL2 - AGC Control
Bit
Field Name
Reset
R/W
Description
7:6
MAX_DVGA_GAIN[1:0]
00
R/W
Reduces the maximum allowable DVGA gain.
5:3
2:0
MAX_LNA_GAIN[2:0]
MAGN_TARGET[2:0]
000
011
R/W
R/W
00
All gain settings can be used
01
The highest gain setting can not be used
10
The 2 highest gain settings can not be used
11
The 3 highest gain settings can not be used
Sets the maximum allowable LNA + LNA 2 gain relative to the
maximum possible gain.
000
Maximum possible LNA + LNA 2 gain
001
Approx. 2.6 dB below maximum possible gain
010
Approx. 6.1 dB below maximum possible gain
011
Approx. 7.4 dB below maximum possible gain
100
Approx. 9.2 dB below maximum possible gain
101
Approx. 11.5 dB below maximum possible gain
110
Approx. 14.6 dB below maximum possible gain
111
Approx. 17.1 dB below maximum possible gain
These bits set the target value for the averaged amplitude from the
digital channel filter (1 LSB = 0 dB).
000
24 dB
001
27 dB
010
30 dB
011
33 dB
100
36 dB
101
38 dB
110
40 dB
111
42 dB
SWRS033F
Page 220 of 242
CC1110Fx / CC1111Fx
0xDF18: AGCCTRL1 - AGC Control
Bit
Field Name
7
Reset
R/W
Description
-
R0
Not used
6
AGC_LNA_PRIORITY
1
R/W
Selects between two different strategies for LNA and LNA2
gain adjustment. When 1, the LNA gain is decreased first.
When 0, the LNA2 gain is decreased to minimum before
decreasing LNA gain.
5:4
CARRIER_SENSE_REL_THR[1:0]
00
R/W
Sets the relative change threshold for asserting carrier sense
3:0
CARRIER_SENSE_ABS_THR[3:0]
0000
R/W
00
Relative carrier sense threshold disabled
01
6 dB increase in RSSI value
10
10 dB increase in RSSI value
11
14 dB increase in RSSI value
Sets the absolute RSSI threshold for asserting carrier sense
(Equal to channel filter amplitude when AGC has not
decreased gain). The 2-complement signed threshold is
programmed in steps of 1 dB and is relative to the
MAGN_TARGET setting.
1000 (–8)
Absolute carrier sense threshold disabled
1001 (–7)
7 dB below MAGN_TARGET setting
…
…
1111 (–1)
1 dB below MAGN_TARGET setting
0000 (0)
At MAGN_TARGET setting
0001 (1)
1 dB above MAGN_TARGET setting
…
…
0111 (7)
7 dB above MAGN_TARGET setting
SWRS033F
Page 221 of 242
CC1110Fx / CC1111Fx
0xDF19: AGCCTRL0 - AGC Control
Bit
Field Name
Reset
R/W
Description
7:6
HYST_LEVEL[1:0]
10
R/W
Sets the level of hysteresis on the magnitude deviation
(internal AGC signal that determines gain changes).
5:4
3:2
1:0
WAIT_TIME[1:0]
AGC_FREEZE[1:0]
FILTER_LENGTH[1:0]
01
00
01
R/W
R/W
R/W
00
No hysteresis, small symmetric dead zone, high gain
01
Low hysteresis, small asymmetric dead zone, medium
gain
10
Medium hysteresis, medium asymmetric dead zone,
medium gain
11
Large hysteresis, large asymmetric dead zone, low gain
Sets the number of channel filter samples from a gain
adjustment has been made until the AGC algorithm starts
accumulating new samples.
00
8
01
16
10
24
11
32
Controls when the AGC gain should be frozen.
00
Normal operation. Always adjust gain when required.
01
The gain setting is frozen when a sync word has been
found.
10
Manually freeze the analog gain setting and continue to
adjust the digital gain.
11
Manually freezes both the analog and the digital gain
settings. Used for manually overriding the gain.
Sets the averaging length for the amplitude from the channel
filter. Sets the OOK/ASK decision boundary for OOK/ASK
reception. Please use the SmartRF® Studio software [9] for
recommended settings.
00
8
01
16
10
32
11
64
0xDF1A: FREND1 - Front End RX Configuration
Bit
Field Name
Reset
R/W
Description
7:6
LNA_CURRENT[1:0]
01
R/W
Adjusts front-end LNA PTAT current output
5:4
LNA2MIX_CURRENT[1:0]
01
R/W
Adjusts front-end PTAT outputs
3:2
LODIV_BUF_CURRENT_RX[1:0]
01
R/W
Adjusts current in RX LO buffer (LO input to mixer)
1:0
MIX_CURRENT[1:0]
10
R/W
Adjusts current in mixer
SWRS033F
Page 222 of 242
CC1110Fx / CC1111Fx
0xDF1B: FREND0 - Front End TX Configuration
Bit
Field Name
7:6
5:4
LODIV_BUF_CURRENT_TX[1:0]
3
2:0
PA_POWER[2:0]
Reset
R/W
Description
-
R0
Not used
01
R/W
Adjusts current TX LO buffer (input to PA). The value to
use in this field is given by the SmartRF® Studio software
[9].
-
R0
Not used
000
R/W
Selects PA power setting. This value is an index to the
PATABLE (PA_TABLE7 - PA_TABLE0 registers), which
can be programmed with up to 8 different PA settings. In
ASK mode, this selects the PATABLE index to use when
transmitting a ‘1’. PATABLE index zero is used in ASK
when transmitting a ‘0’. The PATABLE settings from index
‘0’ to the PA_POWER value are used for ASK TX shaping,
and for power ramp-up/ramp-down at the start/end of
transmission in all TX modulation formats.
0xDF1C: FSCAL3 - Frequency Synthesizer Calibration
Bit
Field Name
Reset
R/W
Description
7:6
FSCAL3[7:6]
10
R/W
Frequency synthesizer calibration configuration. The value to
write in this register before calibration is given by the
SmartRF® Studio software [9].
5:4
CHP_CURR_CAL_EN[1:0]
10
R/W
Disable charge pump calibration stage when 0
3:0
FSCAL3[3:0]
1001
R/W
Frequency synthesizer calibration result register. Digital bit
vector defining the charge pump output current, on an
FSCAL3[3:0]/4
exponential scale: IOUT=I0·2
Fast frequency hopping without calibration for each hop can
be done by calibrating upfront for each frequency and saving
the resulting FSCAL3, FSCAL2 and FSCAL1 register values.
Between each frequency hop, calibration can be replaced by
writing the FSCAL3, FSCAL2 and FSCAL1 register values
corresponding to the next RF frequency.
Note: This register will be in its reset state when returning to active mode from PM2 and PM3.
0xDF1D: FSCAL2 - Frequency Synthesizer Calibration
Bit
Field Name
7:6
5
4:0
VCO_CORE_H_EN
FSCAL2[4:0]
Reset
R/W
Description
-
R0
Not used
0
R/W
Select VCO
01010
R/W
0
Low
1
High
Frequency synthesizer calibration result register. VCO
current calibration result and override value
Fast frequency hopping without calibration for each hop can
be done by calibrating upfront for each frequency and saving
the resulting FSCAL3, FSCAL2 and FSCAL1 register values.
Between each frequency hop, calibration can be replaced by
writing the FSCAL3, FSCAL2 and FSCAL1 register values
corresponding to the next RF frequency.
Note: This register will be in its reset state when returning to active mode from PM2 and PM3.
SWRS033F
Page 223 of 242
CC1110Fx / CC1111Fx
0xDF1E: FSCAL1 - Frequency Synthesizer Calibration
Bit
Field Name
7:6
5:0
FSCAL1[5:0]
Reset
R/W
Description
-
R0
Not used
100000
R/W
Frequency synthesizer calibration result register. Capacitor array setting
for VCO coarse tuning.
Fast frequency hopping without calibration for each hop can be done by
calibrating upfront for each frequency and saving the resulting FSCAL3,
FSCAL2 and FSCAL1 register values. Between each frequency hop,
calibration can be replaced by writing the FSCAL3, FSCAL2 and FSCAL1
register values corresponding to the next RF frequency.
Note: This register will be in its reset state when returning to active mode from PM2 and PM3.
0xDF1F: FSCAL0 - Frequency Synthesizer Calibration
Bit
Field Name
7
6:0
FSCAL0[6:0]
Reset
R/W
Description
-
R0
Not used
0001101
R/W
Frequency synthesizer calibration control. The value to use in this register
is given by the SmartRF® Studio software [9].
0xDF23: TEST2 - Various Test Settings
Bit
Field Name
Reset
R/W
Description
7:0
TEST2[7:0]
0x88
R/W
At low data rates, the sensitivity can be improved by changing it to 0x81
(MDMCFG2.DEM_DCFILT_OFF should be 0).
0xDF24: TEST1 - Various Test Settings
Bit
Field Name
Reset
R/W
Description
7:0
TEST1[7:0]
0x11
R/W
Always set this register to 0x31 when being in TX. At low data rates, the
sensitivity can be improved by changing it to 0x35 in RX.
(MDMCFG2.DEM_DCFILT_OFF should be 0).
0xDF25: TEST0 - Various Test Settings
Bit
Field Name
Reset
R/W
Description
7:2
TEST0[7:2]
000010
R/W
The value to use in this register is given by the SmartRF® Studio software
[9].
1
VCO_SEL_CAL_EN
1
R/W
Enable VCO selection calibration stage when 1
0
TEST0[0]
1
R/W
The value to use in this register is given by the SmartRF® Studio software
[9].
0xDF27: PA_TABLE7 - PA Power Setting 7
Bit
Field Name
Reset
R/W
Description
7:0
PA_TABLE7[7:0]
0x00
R/W
Power amplifier output power setting 7
0xDF28: PA_TABLE6 - PA Power Setting 6
Bit
Field Name
Reset
R/W
Description
7:0
PA_TABLE6[7:0]
0x00
R/W
Power amplifier output power setting 6
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CC1110Fx / CC1111Fx
0xDF29: PA_TABLE5 - PA Power Setting 5
Bit
Field Name
Reset
R/W
Description
7:0
PA_TABLE5[7:0]
0x00
R/W
Power amplifier output power setting 5
0xDF2A: PA_TABLE4 - PA Power Setting 4
Bit
Field Name
Reset
R/W
Description
7:0
PA_TABLE4[7:0]
0x00
R/W
Power amplifier output power setting 4
0xDF2B: PA_TABLE3 - PA Power Setting 3
Bit
Field Name
Reset
R/W
Description
7:0
PA_TABLE3[7:0]
0x00
R/W
Power amplifier output power setting 3
0xDF2C: PA_TABLE2 - PA Power Setting 2
Bit
Field Name
Reset
R/W
Description
7:0
PA_TABLE2[7:0]
0x00
R/W
Power amplifier output power setting 2
0xDF2D: PA_TABLE1 - PA Power Setting 1
Bit
Field Name
Reset
R/W
Description
7:0
PA_TABLE1[7:0]
0x00
R/W
Power amplifier output power setting 1
0xDF2E: PA_TABLE0 - PA Power Setting 0
Bit
Field Name
Reset
R/W
Description
7:0
PA_TABLE0[7:0]
0x00
R/W
Power amplifier output power setting 0
0xDF36: PARTNUM - Chip ID[15:8]
Bit
Field Name
Reset
R/W
Description
7:0
PARTNUM[7:0]
0x01 CC1110Fx
R
Chip part number
0x11 CC1111Fx
0xDF37: VERSION - Chip ID[7:0]
Bit
Field Name
Reset
R/W
Description
7:0
VERSION[7:0]
0x03
R
Chip version number.
0xDF38: FREQEST - Frequency Offset Estimate from Demodulator
Bit
Field Name
Reset
R/W
Description
7:0
FREQOFF_EST
0x00
R
The estimated frequency offset (2’s complement) of the carrier.
14
Resolution is fRef/2
Range is ±202 kHz to ±209 kHz for CC1110Fx and ±186 kHz for CC1111Fx
Frequency offset compensation is only supported for 2-FSK, GFSK,
and MSK modulation. This register will read 0 when using ASK or OOK
modulation.
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CC1110Fx / CC1111Fx
0xDF39: LQI - Demodulator Estimate for Link Quality
Bit
Field Name
Reset
R/W
Description
7
CRC_OK
0
R
The last CRC comparison matched. Cleared when entering/restarting RX
mode.
6:0
LQI_EST[6:0]
0000000
R
The Link Quality Indicator estimates how easily a received signal can be
demodulated. Calculated over the 64 symbols following the sync word.
0xDF3A: RSSI - Received Signal Strength Indication
Bit
Field Name
Reset
R/W
Description
7:0
RSSI
0x80
R
Received signal strength indicator
0xDF3B: MARCSTATE - Main Radio Control State Machine State
Bit
Field Name
7:5
4:0
MARC_STATE[4:0]
Reset
R/W
Description
-
R0
Not used
0001
R
Main Radio Control FSM State
Value
State Name
State (Figure 55, Page202)
00000
SLEEP
SLEEP
00001
IDLE
IDLE
00010
Not used
00011
VCOON_MC
MANCAL
00100
REGON_MC
MANCAL
00101
MANCAL
MANCAL
00110
VCOON
FS_WAKEUP
00111
REGON
FS_WAKEUP
01000
STARTCAL
CALIBRATE
01001
BWBOOST
SETTLING
01010
FS_LOCK
SETTLING
01011
IFADCON
SETTLING
01100
ENDCAL
CALIBRATE
01101
RX
RX
01110
RX_END
RX
01111
RX_RST
RX
10000
TXRX_SWITCH
TXRX_SETTLING
10001
RX_OVERFLOW
RX_OVERFLOW
10010
FSTXON
FSTXON
10011
TX
TX
10100
TX_END
TX
10101
RXTX_SWITCH
RXTX_SETTLING
10110
TX_UNDERFLOW
TX_UNDERFLOW
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CC1110Fx / CC1111Fx
0xDF3C: PKTSTATUS - Packet Status
Bit
Field Name
Reset
R/
W
Description
7
CRC_OK
0
R
The last CRC comparison matched. Cleared when entering/restarting RX
mode.
6
CS
0
R
Carrier sense
5
PQT_REACHED
0
R
Preamble Quality reached
4
CCA
0
R
Channel is clear
3
SFD
0
R
Sync word found
-
R0
Not used
2:0
0xDF3D: VCO_VC_DAC - Current Setting from PLL Calibration Module
Bit
Field Name
Reset
R/W
Description
7:0
VCO_VC_DAC[7:0]
0x94
R
Status register for test only.
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CC1110Fx / CC1111Fx
15 Voltage Regulators
The CC1110Fx/CC1111Fx includes a low drop-out
voltage regulator. This is used to provide a 1.8
V power supply to the CC1110Fx/CC1111Fx digital
power supply. The voltage regulator should not
be used to provide power to external circuits
because of limited power sourcing capability
and also due to noise considerations.
The voltage regulator input pin AVDD_DREG is
to be connected to the unregulated 2.0 V to 3.6
V power supply. The output of the digital
regulator is connected internally in the
CC1110Fx/CC1111Fx to the digital power supply.
The voltage regulator requires an external
decoupling capacitor connected to the DCOUPL
pin as described in Section 10 on Page 36.
15.1 Voltage Regulator Power-on
The voltage regulator is disabled when the
CC1110Fx/CC1111Fx is placed in power modes
PM2 or PM3 (see Section 13.1). When the
voltage regulator is disabled, register and RAM
contents will be retained while the unregulated
2.0 V - 3.6 V power supply is present.
16 Radio Test Output Signals
For debug and test purposes, a number of
internal status signals in the radio may be
output on the port pins P1_7 - P1_5. This
debug option is controlled through the RF
registers IOCFG2 - IOCFG0. Table 73 shows
the value written to IOCFGx.GDOx_CFG[5:0]
with the corresponding internal signals that will
be output in each case.
Setting IOCFGx.GDOx_CFG to a value other
than 0 will override the P1SEL_SELP1_7,
P1SEL_SELP1_6,
and
P1SEL_SELP1_5
settings, and the pins will automatically
become outputs.
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CC1110Fx / CC1111Fx
GDO0_CFG[5:0]
GDO1_CFG[5:0]
GDO2_CFG[5:0]
Description
000000
The pin is configured according to the I/O registers. See 13.4.11
000001 - 000111
Reserved
001000
Preamble Quality Reached. Asserts when the PQI is above the programmed PQT value.
001001
Clear channel assessment. High when RSSI level is below threshold (dependent on the current
CCA_MODE setting)
001010 – 001101
Reserved
001110
Carrier sense. High if RSSI level is above threshold.
001111
CRC_OK. The last CRC comparison matched. Cleared when entering/restarting RX mode.
010000 - 010101
Reserved
010110
RX_HARD_DATA[1]. Can be used together with RX_SYMBOL_TICK for alternative serial RX output.
010111
RX_HARD_DATA[0]. Can be used together with RX_SYMBOL_TICK for alternative serial RX output.
011000 - 011010
Reserved
011011
PA_PD. Can be used to control an external PA or RX/TX switch. Signal is asserted when the radio
enters TX state.
011100
LNA_PD. Can be used to control an external LNA or RX/TX switch. Signal is asserted when the radio
enters RX state.
011101
RX_SYMBOL_TICK. Can be used together with RX_HARD_DATA for alternative serial RX output.
011110 - 101110
Reserved
101111
HW to 0 (HW1 achieved by setting GDOx_INV=1). Can be used to control an external LNA/PA or
RX/TX switch.
110000 - 111111
Reserved
Table 73: Radio Test Output Signals
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CC1110Fx / CC1111Fx
17 Register Overview
MPAGE (0x93) - Memory Page Select................................................................................... 53
MEMCTR (0xC7) - Memory Arbiter Control......................................................................... 54
DPH0 (0x83) - Data Pointer 0 High Byte ............................................................................... 54
DPL0 (0x82) - Data Pointer 0 Low Byte................................................................................. 54
DPH1 (0x85) - Data Pointer 1 High Byte ............................................................................... 54
DPL1 (0x84) - Data Pointer 1 Low Byte................................................................................. 54
DPS (0x92) - Data Pointer Select............................................................................................ 55
PSW (0xD0) - Program Status Word ...................................................................................... 55
ACC (0xE0) - Accumulator .................................................................................................... 56
B (0xF0) - B Register .............................................................................................................. 56
SP (0x81) - Stack Pointer ........................................................................................................ 56
IEN1 (0xB8) - Interrupt Enable 1 Register ............................................................................. 63
IEN2 (0x9A) - Interrupt Enable 2 Register ............................................................................. 64
TCON (0x88) - CPU Interrupt Flag 1 ..................................................................................... 65
S0CON (0x98) - CPU Interrupt Flag 2 ................................................................................... 66
S1CON (0x9B) - CPU Interrupt Flag 3................................................................................... 66
IRCON (0xC0) - CPU Interrupt Flag 4 ................................................................................... 67
IRCON2 (0xE8) - CPU Interrupt Flag 5 ................................................................................. 68
IP1 (0xB9) - Interrupt Priority 1.............................................................................................. 68
IP0 (0xA9) - Interrupt Priority 0 ............................................................................................. 69
PCON (0x87) - Power Mode Control...................................................................................... 78
SLEEP (0xBE) - Sleep Mode Control..................................................................................... 79
CLKCON (0xC6) - Clock Control .......................................................................................... 82
FCTL (0xAE) - Flash Control ................................................................................................. 89
FWDATA (0xAF) - Flash Write Data .................................................................................... 89
FADDRH (0xAD) - Flash Address High Byte........................................................................ 89
FADDRL (0xAC) - Flash Address Low Byte......................................................................... 89
FWT (0xAB) - Flash Write Timing ........................................................................................ 89
P0 (0x80) - Port 0 .................................................................................................................... 95
P1 (0x90) - Port 1 .................................................................................................................... 95
P2 (0xA0) - Port 2 ................................................................................................................... 95
PERCFG (0xF1) - Peripheral Control ..................................................................................... 95
ADCCFG (0xF2) - ADC Input Configuration ........................................................................ 96
P0SEL (0xF3) - Port 0 Function Select................................................................................... 96
P1SEL (0xF4) - Port 1 Function Select................................................................................... 96
P2SEL (0xF5) - Port 2 Function Select................................................................................... 97
P0DIR (0xFD) - Port 0 Direction ............................................................................................ 97
P1DIR (0xFE) - Port 1 Direction ............................................................................................ 97
P2DIR (0xFF) - Port 2 Direction............................................................................................. 98
P0INP (0x8F) - Port 0 Input Mode.......................................................................................... 98
P1INP (0xF6) - Port 1 Input Mode.......................................................................................... 98
P2INP (0xF7) - Port 2 Input Mode.......................................................................................... 98
P0IFG (0x89) - Port 0 Interrupt Status Flag............................................................................ 99
P1IFG (0x8A) - Port 1 Interrupt Status Flag ........................................................................... 99
P2IFG (0x8B) - Port 2 Interrupt Status Flag ........................................................................... 99
PICTL (0x8C) - Port Interrupt Control ................................................................................. 100
P1IEN (0x8D) - Port 1 Interrupt Mask.................................................................................. 100
DMAARM (0xD6) - DMA Channel Arm............................................................................. 110
DMAREQ (0xD7) - DMA Channel Start Request and Status .............................................. 111
DMA0CFGH (0xD5) - DMA Channel 0 Configuration Address High Byte........................ 111
DMA0CFGL (0xD4) - DMA Channel 0 Configuration Address Low Byte......................... 111
DMA1CFGH (0xD3) - DMA Channel 1 - 4 Configuration Address High Byte .................. 111
DMA1CFGL (0xD2) - DMA Channel 1 - 4 Configuration Address Low Byte ................... 111
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CC1110Fx / CC1111Fx
DMAIRQ (0xD1) - DMA Interrupt Flag............................................................................... 112
ENDIAN (0x95) - USB Endianess Control (CC1111Fx) ......................................................... 112
T1CNTH (0xE3) - Timer 1 Counter High............................................................................. 121
T1CNTL (0xE2) - Timer 1 Counter Low.............................................................................. 121
T1CTL (0xE4) - Timer 1 Control and Status ........................................................................ 121
T1CCTL0 (0xE5) - Timer 1 Channel 0 Capture/Compare Control ...................................... 122
T1CC0H (0xDB) - Timer 1 Channel 0 Capture/Compare Value High ................................. 122
T1CC0L (0xDA) - Timer 1 Channel 0 Capture/Compare Value Low.................................. 122
T1CCTL1 (0xE6) - Timer 1 Channel 1 Capture/Compare Control ...................................... 123
T1CC1H (0xDD) - Timer 1 Channel 1 Capture/Compare Value High................................. 123
T1CC1L (0xDC) - Timer 1 Channel 1 Capture/Compare Value Low .................................. 123
T1CCTL2 (0xE7) - Timer 1 Channel 2 Capture/Compare Control ...................................... 124
T1CC2H (0xDF) - Timer 1 Channel 2 Capture/Compare Value High ................................. 124
T1CC2L (0xDE) - Timer 1 Channel 2 Capture/Compare Value Low .................................. 124
T2CTL (0x9E) - Timer 2 Control.......................................................................................... 126
T2CT (0x9C) - Timer 2 Count .............................................................................................. 126
T2PR (0x9D) - Timer 2 Prescaler ......................................................................................... 126
WORTIME0 (0xA5) - Sleep Timer Low Byte...................................................................... 128
WORTIME1 (0xA6) - Sleep Timer High Byte..................................................................... 128
WOREVT1 (0xA4) - Sleep Timer Event0 Timeout High..................................................... 128
WOREVT0 (0xA3) - Sleep Timer Event0 Timeout Low ..................................................... 129
WORCTRL (0xA2) - Sleep Timer Control........................................................................... 129
WORIRQ (0xA1) - Sleep Timer Interrupt Control ............................................................... 129
T3CNT (0xCA) - Timer 3 Counter ....................................................................................... 133
T3CTL (0xCB) - Timer 3 Control......................................................................................... 134
T3CCTL0 (0xCC) - Timer 3 Channel 0 Compare Control ................................................... 135
T3CC0(0xCD) - Timer 3 Channel 0 Compare Value ........................................................... 135
T3CCTL1 (0xCE) - Timer 3 Channel 1 Compare Control ................................................... 136
T3CC1 (0xCF) - Timer 3 Channel 1 Compare Value ........................................................... 136
T4CNT (0xEA) - Timer 4 Counter........................................................................................ 136
T4CTL (0xEB) - Timer 4 Control......................................................................................... 137
T4CCTL0 (0xEC) - Timer 4 Channel 0 Compare Control ................................................... 138
T4CC0 (0xED) - Timer 4 Channel 0 Compare Value........................................................... 138
T4CCTL1 (0xEE) - Timer 4 Channel 1 Compare Control.................................................... 139
T4CC1 (0xEF) - Timer 4 Channel 1 Compare Value ........................................................... 139
TIMIF (0xD8) - Timers 1/3/4 Interrupt Mask/Flag............................................................... 140
ADCL (0xBA) - ADC Data Low .......................................................................................... 144
ADCH (0xBB) - ADC Data High ......................................................................................... 144
ADCCON1 (0xB4) - ADC Control 1.................................................................................... 144
ADCCON2 (0xB5) - ADC Control 2.................................................................................... 145
ADCCON3 (0xB6) - ADC Control 3.................................................................................... 146
RNDL (0xBC) - Random Number Generator Data Low Byte.............................................. 148
RNDH (0xBD) - Random Number Generator Data High Byte............................................. 148
ENCCS (0xB3) - Encryption Control and Status .................................................................. 150
ENCDI (0xB1) - Encryption Input Data ............................................................................... 150
ENCDO (0xB2) - Encryption Output Data ........................................................................... 150
WDCTL (0xC9) - Watchdog Timer Control......................................................................... 152
U0CSR (0x86) - USART 0 Control and Status..................................................................... 158
U0UCR (0xC4) - USART 0 UART Control ......................................................................... 159
U0GCR (0xC5) - USART 0 Generic Control ....................................................................... 159
U0DBUF (0xC1) - USART 0 Receive/Transmit Data Buffer .............................................. 160
U0BAUD (0xC2) - USART 0 Baud Rate Control ................................................................ 160
U1CSR (0xF8) - USART 1 Control and Status..................................................................... 160
U1UCR (0xFB) - USART 1 UART Control......................................................................... 161
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CC1110Fx / CC1111Fx
U1GCR (0xFC) - USART 1 Generic Control ....................................................................... 162
U1DBUF (0xF9) - USART 1 Receive/Transmit Data Buffer............................................... 162
U1BAUD (0xFA) - USART 1 Baud Rate Control................................................................ 162
0xDF40: I2SCFG0 - I2S Configuration Register 0................................................................ 167
0xDF41: I2SCFG1 - I2S Configuration Register 1................................................................ 168
0xDF42: I2SDATL - I2S Data Low Byte .............................................................................. 168
0xDF43: I2SDATH - I2S Data High Byte ............................................................................. 168
0xDF44: I2SWCNT - I2S Word Count Register ................................................................... 168
0xDF45: I2SSTAT - I2S Status Register ............................................................................... 169
0xDF46: I2SCLKF0 - I2S Clock Configuration Register 0................................................... 169
0xDF47: I2SCLKF1 - I2S Clock Configuration Register 1................................................... 169
0xDF48: I2SCLKF2 - I2S Clock Configuration Register 2................................................... 169
0xDE00: USBADDR - Function Address............................................................................. 179
0xDE01: USBPOW - Power/Control Register...................................................................... 179
0xDE02: USBIIF - IN Endpoints and EP0 Interrupt Flags ................................................... 179
0xDE04: USBOIF - Out Endpoints Interrupt Flags .............................................................. 180
0xDE06: USBCIF - Common USB Interrupt Flags .............................................................. 180
0xDE07: USBIIE - IN Endpoints and EP0 Interrupt Enable Mask....................................... 180
0xDE09: USBOIE - Out Endpoints Interrupt Enable Mask.................................................. 181
0xDE0B: USBCIE - Common USB Interrupt Enable Mask................................................. 181
0xDE0C: USBFRML - Current Frame Number (Low byte)................................................. 181
0xDE0D: USBFRMH - Current Frame Number (High byte) ............................................... 182
0xDE0E: USBINDEX - Current Endpoint Index Register ................................................... 182
0xDE10: USBMAXI - Max. Packet Size for IN Endpoint{1 - 5} ........................................ 182
0xDE11: USBCS0 - EP0 Control and Status (USBINDEX=0)............................................. 182
0xDE11: USBCSIL - IN EP{1 - 5} Control and Status Low................................................ 183
0xDE12: USBCSIH - IN EP{1 - 5} Control and Status High............................................... 183
0xDE13: USBMAXO - Max. Packet Size for OUT{1 - 5} Endpoint................................... 183
0xDE14: USBCSOL - OUT EP{1 - 5} Control and Status Low .......................................... 184
0xDE15: USBCSOH - OUT EP{1 - 5} Control and Status High ......................................... 184
0xDE16: USBCNT0 - Number of Received Bytes in EP0 FIFO (USBINDEX=0) .............. 184
0xDE16: USBCNTL - Number of Bytes in EP{1 - 5} OUT FIFO Low .............................. 184
0xDE17: USBCNTH - Number of Bytes in EP{1 - 5} OUT FIFO High ............................. 185
0xDE20: USBF0 - Endpoint 0 FIFO..................................................................................... 185
0xDE22: USBF1 - Endpoint 1 FIFO..................................................................................... 185
0xDE24: USBF2 - Endpoint 2 FIFO..................................................................................... 185
0xDE26: USBF3 - Endpoint 3 FIFO..................................................................................... 185
0xDE28: USBF4 - Endpoint 4 FIFO..................................................................................... 185
0xDE2A: USBF5 - Endpoint 5 FIFO .................................................................................... 185
RFIF (0xE9) - RF Interrupt Flags.......................................................................................... 189
RFIM (0x91) - RF Interrupt Mask ........................................................................................ 190
0xDF2F: IOCFG2 - Radio Test Signal Configuration (P1_7) .............................................. 211
0xDF30: IOCFG1 - Radio Test Signal Configuration (P1_6)............................................... 211
0xDF31: IOCFG0 - Radio Test Signal Configuration (P1_5)............................................... 211
0xDF00: SYNC1 - Sync Word, High Byte ........................................................................... 211
0xDF01: SYNC0 - Sync Word, Low Byte............................................................................ 211
0xDF02: PKTLEN - Packet Length ...................................................................................... 211
0xDF03: PKTCTRL1 - Packet Automation Control............................................................. 212
0xDF04: PKTCTRL0 - Packet Automation Control............................................................. 212
0xDF05: ADDR - Device Address........................................................................................ 213
0xDF06: CHANNR - Channel Number ................................................................................ 213
0xDF07: FSCTRL1 - Frequency Synthesizer Control .......................................................... 213
0xDF08: FSCTRL0 - Frequency Synthesizer Control .......................................................... 213
0xDF09: FREQ2 - Frequency Control Word, High Byte...................................................... 213
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CC1110Fx / CC1111Fx
0xDF0A: FREQ1 - Frequency Control Word, Middle Byte ................................................. 213
0xDF0B: FREQ0 - Frequency Control Word, Low Byte...................................................... 213
0xDF0C: MDMCFG4 - Modem configuration ..................................................................... 214
0xDF0D: MDMCFG3 - Modem Configuration .................................................................... 214
0xDF0E: MDMCFG2 - Modem Configuration .................................................................... 215
0xDF0F: MDMCFG1 - Modem Configuration..................................................................... 216
0xDF10: MDMCFG0 - Modem Configuration..................................................................... 216
0xDF11: DEVIATN - Modem Deviation Setting ................................................................. 216
0xDF12: MCSM2 - Main Radio Control State Machine Configuration ............................... 217
0xDF13: MCSM1 - Main Radio Control State Machine Configuration ............................... 217
0xDF14: MCSM0 - Main Radio Control State Machine Configuration ............................... 218
0xDF15: FOCCFG - Frequency Offset Compensation Configuration.................................. 218
0xDF16: BSCFG - Bit Synchronization Configuration ........................................................ 219
0xDF17: AGCCTRL2 - AGC Control .................................................................................. 220
0xDF18: AGCCTRL1 - AGC Control .................................................................................. 221
0xDF19: AGCCTRL0 - AGC Control .................................................................................. 222
0xDF1A: FREND1 - Front End RX Configuration .............................................................. 222
0xDF1B: FREND0 - Front End TX Configuration............................................................... 223
0xDF1C: FSCAL3 - Frequency Synthesizer Calibration ...................................................... 223
0xDF1D: FSCAL2 - Frequency Synthesizer Calibration...................................................... 223
0xDF1E: FSCAL1 - Frequency Synthesizer Calibration ...................................................... 224
0xDF1F: FSCAL0 - Frequency Synthesizer Calibration ...................................................... 224
0xDF23: TEST2 - Various Test Settings............................................................................... 224
0xDF24: TEST1 - Various Test Settings............................................................................... 224
0xDF25: TEST0 - Various Test Settings............................................................................... 224
0xDF27: PA_TABLE7 - PA Power Setting 7....................................................................... 224
0xDF28: PA_TABLE6 - PA Power Setting 6....................................................................... 224
0xDF29: PA_TABLE5 - PA Power Setting 5....................................................................... 225
0xDF2A: PA_TABLE4 - PA Power Setting 4 ...................................................................... 225
0xDF2B: PA_TABLE3 - PA Power Setting 3 ...................................................................... 225
0xDF2C: PA_TABLE2 - PA Power Setting 2 ...................................................................... 225
0xDF2D: PA_TABLE1 - PA Power Setting 1 ...................................................................... 225
0xDF2E: PA_TABLE0 - PA Power Setting 0 ...................................................................... 225
0xDF36: PARTNUM - Chip ID[15:8] .................................................................................. 225
0xDF37: VERSION - Chip ID[7:0] ...................................................................................... 225
0xDF38: FREQEST - Frequency Offset Estimate from Demodulator.................................. 225
0xDF39: LQI - Demodulator Estimate for Link Quality....................................................... 226
0xDF3A: RSSI - Received Signal Strength Indication ......................................................... 226
0xDF3B: MARCSTATE - Main Radio Control State Machine State................................... 226
0xDF3C: PKTSTATUS - Packet Status................................................................................ 227
0xDF3D: VCO_VC_DAC - Current Setting from PLL Calibration Module........................ 227
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CC1110Fx / CC1111Fx
18
Package Description (QLP 36)
All dimensions are in millimeters, angles in
degrees. Note: The CC1110Fx/CC1111Fx is
available in RoHS lead-free package only.
Compliant with JEDEC: MO-220.
Figure 62: Package Dimensions Drawing
Quad Leadless Package (QLP)
QLP36
Min
Max
A
A1
A2
D
D1
E
E1
0.80
0.005
0.60
5.90
5.65
5.90
5.65
0.85
0.025
0.65
6.00
5.75
6.00
5.75
0.90
0.045
0.70
6.10
5.85
6.10
5.85
e
0.50
b
L
0.18
0.45
0.23
0.55
0.30
0.65
D2
E2
4.40
4.40
Table 74: Package Dimensions
SWRS033F
Page 234 of 242
CC1110Fx / CC1111Fx
18.1 Recommended PCB Layout for Package (QLP 36)
Figure 63: Recommended PCB Layout for QLP 36 Package
Note: The figure is an illustration only and not to scale. There are nine 14 mil diameter via holes
distributed symmetrically in the ground pad under the package. See also the CC1110EM
reference design [1] and theCC1111 USB-Dongle reference design [4].
Thermal Resistance
Air velocity [m/s]
0
Rth,j-a [C/W]
32
Table 75: Thermal Properties of QLP 36 Package
18.2 Soldering information
The recommendations for lead-free reflow in
IPC/JEDEC J-STD-020D should be followed.
The lead finish is annealed (150 °C for 1 hr)
pure matte tin.
18.3 Tray Specification
Tray Specification
Package
Tray Length
Tray Width
Tray Height
Units per Tray
QLP 36
322.6 mm
135.9 mm
7.62 mm
490
Table 76: Tray Specification
SWRS033F
Page 235 of 242
CC1110Fx / CC1111Fx
18.4 Carrier Tape and Reel Specification
Carrier tape and reel is in accordance with EIA
Specification 481.
Tape and Reel Specification
Package
Carrier Tape
Width
Component
Pitch
Hole Pitch
Reel Diameter
Reel Hub
Diameter
Units per
Reel
QLP 36
16 mm
12 mm
4 mm
13 inches
100 mm
2500
Table 77: Carrier Tape and Reel Specification
19
Ordering Information
Ordering Part
Number
CC1110F8RSP
Description
Minimum
Order
Quantity
8 kB flash, 1 kB RAM, System-on-Chip RF Transceiver.
490
QLP36 package, RoHS compliant Pb-free assembly, Tray with 490 pcs per tray.
CC1110F8RSPR
8 kB flash, 1 kB RAM, System-on-Chip RF Transceiver.
2500
QLP36 package, RoHS compliant Pb-free assembly, T&R with 2500 pcs per reel.
CC1110F16RSP
16 kB flash, 2 kB RAM, System-on-Chip RF Transceiver.
490
QLP36 package, RoHS compliant Pb-free assembly, Tray with 490 pcs per tray.
CC1110F16RSPR
16 kB flash, 2 kB RAM, System-on-Chip RF Transceiver.
2500
QLP36 package, RoHS compliant Pb-free assembly, T&R with 2500 pcs per reel.
CC1110F32RSP
32 kB flash, 4 kB RAM, System-on-Chip RF Transceiver.
490
QLP36 package, RoHS compliant Pb-free assembly, Tray with 490 pcs per tray.
CC1110F32RSPR
32 kB flash, 4 kB RAM, System-on-Chip RF Transceiver.
2500
QLP36 package, RoHS compliant Pb-free assembly, T&R with 2500 pcs per reel.
CC1111F8RSP
8 kB flash, 1 kB RAM, full-speed USB, System-on-Chip RF Transceiver.
490
QLP36 package, RoHS compliant Pb-free assembly, Tray with 490 pcs per tray.
CC1111F8RSPR
8 kB flash, 1 kB RAM, full-speed USB, System-on-Chip RF Transceiver.
2500
QLP36 package, RoHS compliant Pb-free assembly, T&R with 2500 pcs per reel.
CC1111F16RSP
16 kB flash, 2 kB RAM, full-speed USB, System-on-Chip RF Transceiver.
490
QLP36 package, RoHS compliant Pb-free assembly, Tray with 490 pcs per tray.
CC1111F16RSPR
16 kB flash, 2 kB RAM, full-speed USB, System-on-Chip RF Transceiver.
2500
QLP36 package, RoHS compliant Pb-free assembly, T&R with 2500 pcs per reel.
CC1111F32RSP
32 kB flash, 4 kB RAM, full-speed USB, System-on-Chip RF Transceiver.
490
QLP36 package, RoHS compliant Pb-free assembly, Tray with 490 pcs per tray.
CC1111F32RSPR
32 kB flash, 4 kB RAM, full-speed USB, System-on-Chip RF Transceiver.
2500
QLP36 package, RoHS compliant Pb-free assembly, T&R with 2500 pcs per reel.
CC1110DK-433
CC1110Fx Development Kit, for 433 MHz operation
1
CC1110DK-868
CC1110Fx Development Kit, for 868/915 MHz operation
1
CC1110EMK433
CC1110 Evaluation Module Kit, for 433 MHz operation
1
CC1110EMK868-915
CC1110 Evaluation Module Kit, for 868/915 MHz operation
1
CC1111EMK868-915
CC1111 Evaluation Module Kit, for 868/915 MHz operation
1
Table 78: Ordering Information
SWRS033F
Page 236 of 242
CC1110Fx / CC1111Fx
20
References
[1]
CC1110EM315 Reference Design (swrr050.zip)
[2]
CC1110EM433 Reference Design (swrr047.zip)
[3]
CC1110EM868 - 915 Reference Design (swrr049.zip)
[4]
CC1111 USB-Dongle Reference Design (swrr049.zip)
[5]
NIST FIPS Pub 197: Advanced Encryption Standard (AES), Federal Information
Processing Standards Publication 197, US Department of Commerce/N.I.S.T., November
26, 2001. Available from the NIST website.
http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf
[6]
Universal Serial Bus Revision 2.0 Specification. Available from the USB Implementors
Forum website.
http://www.usb.org/developers/docs/
[7]
I2S bus specification, Philips Semiconductors, Available from the Philips Semiconductors
website.
http://www.semiconductors.philips.com/acrobat_download/various/I2SBUS.pdf
[8]
IEEE Std 1241-2000, IEEE standard for terminology and test methods for analog-to-digital
converters.
[9]
SmartRF® Studio (swrc046.zip)
[10]
AN001 SRD regulations for license free transceiver operation(swra090.pdf)
[11]
ISM-Band and Short Range Device Regulatory Compliance Overview (swra048.pdf)
[12]
DN006 CC11xx settings for FCC15.247 Solutions (swra123.pdf)
[13]
AN050 Using the CC1101 in the European 868 MHz SRD band (swra146.pdf)
[14]
DN016 Compact antenna solutions for 868/915MHz (swra160.pdf)
SWRS033F
Page 237 of 242
CC1110Fx / CC1111Fx
21
General Information
21.1 Document History
Revision
Date
Description/Changes
SWRS033
2006.01.04
First release
SWRS033A
2006.05.11
Preliminary status updated
SWRS033B
2007.09.14
First data sheet for released product.
Preliminary data sheets exist for engineering samples and pre-production prototype devices,
but these data sheets are not complete and may be incorrect in some aspects compared with
the released product.
SWRS033C
2007.09.20
Data sheet update before release of product.
- Operating frequency range changed to 391 - 464 MHz and 782 - 928 MHz
- Changed restricted range for PA power in Section 14.15 (now 0x68 to 0x6F)
- Added information about register TEST1 when TX-if-CCA is to be used
- Changed register FREQEST and FSCTRL0 max range from ±20910 to ±209
- Added reference to SmartRF Studio for register MCSM0.
- Changed bit description for bit FSCAL2.VCO_CORE_H_EN
- Added Section 13.1.5.2, describing data rate limitations caused by system clock speed
- Added power numbers for RX (Table 6) when using other system clock speeds
SWRS033D
2007.10.19
Data sheet update before release of CC1111Fx.
- Electrical Specification Section 7 updated with CC1111Fx performance
- Minimum power down time of CC1110Fx high speed crystal oscillator stated in Section 7.4.1,
Section 7.4.2, Section 13.1.1 and Section 13.1.5.1.
rd
- Removed 3 overtone crystal option for CC1111Fx
- Replaced Figure 14, Figure 15, and Figure 16 to correct error in address ranges.
- Fixed Table 32
- Fixed bit range for register FADDRH and stated that register WORTIME0 and WORTIME1 defines
a combined 16 bit word (WORTIME)
- Replaced all occurrences of WORCTL with WORCTRL
- Made consistent use of VDD for power with reference to power pin if so needed
- Corrected part number for these devices, register PARTNUM
- Stated that P1_0 and P1_1 does not have pull capability in register P2INP
- Corrected code example in Figure 49
- Corrected unimplemented RAM range in Section 11.2.3.1
- Updated Sections 13.1.3, 13.1.5.1, and 13.1.5.3 with information about system clock source
change
- Rewrote RAM range in Section 13.3.2
- Updated Section 13.8.2 with information about power modes. Changed code examples
- Changed heading text for Section 13.8.5
- Corrected received symbol write and read location in Section 14.11.2
SWRS033E
2007.10.26
- Corrected Table of contents
- Updated guard time and stated for which crystal this applies in Table 11
SWRS033F
Page 238 of 242
CC1110Fx / CC1111Fx
Revision
Date
Description/Changes
SWRS033F
2007.11.23
- Changed title on front page
- TX power consumption @ 1.2 kBaud, −6 dBm output power changed to 15.2 mA on front page
- “Crystal shunt capacitance” changed to C0 in Table 13
- Temperature coefficient changed to 2.47 mV/°C in Table 17
- Zout @ 868/915 MHz = 86.5 + j43 Ω changed to Zout @ 868 MHz = 86.5 + j43 Ω
- Changed component name in Figure 10, Figure 11, and Figure 12 in accordance with
reference designs and added optional filter in Figure 11 and Figure 12
- Table 28: Made changes to component names and descriptions
- Table 29: Changes to component names. Added components for optional filter. R2626/R263
changed to 33 Ω. C203/C214 changed to 22 pF
- Table 37: Added footer explaining opcode for ACALL and AJMP
- CLKCON.OSC bit. Changed description. It is not longer necessary to set SLEEP.OSC_PD=0 to
power up the HS crystal oscillator.
- 11.5.1: Added note emphasizing that an interrupt must not be enabled without having proper
code located at the corresponding interrupt vector address
- :11.5.2: Changes made to code example.
- 13.1.5: Changed HS crystal oscillator operating range to 26 - 27 MHz
- 13.1.5.1: Changed HS crystal oscillator operating range to 26 - 27 MHz and HS RCOSC
operating range to 13 - 13.5 MHz
- 13.1.5.1 and 13.1.7: Added info regarding retention of HS RCOSC calibration result.
- 13.1.5.2: Rewritten to improve readability
- 13.1.5.3: Changed low power RCOSC range to 34.667 - 36 kHz. Added/rewritten info
regarding calibration of the low power RCOSC.
- 13.5: Chapter rewritten to be more consistent in the use of the terms “transfer” and “transfer
count”. Added new info regarding the LEN setting. Changes made to Figure 26 and Figure 27
- 13.6.2.1 and 13.6.2.2: Emphasized that the timer wraps around/is loaded with 0x0000 on the
next timer tick after the terminal count value is reached
- 13.8.4: Added more detailed info about interrupt and associated flags
- 13.9.2.1 and 13.9.2.2 Emphasized that the timer wraps around/is loaded with 0x00 on the next
timer tick after the terminal count value is reached
- USBCIF.RESUMIF changed to USBCIF.RESUMEIF several places in the document
- 14.7.1: Added note saying that frequency offset compensation is not supported for ASK/OOK
- 14.11.2: Added note saying that when FEC is used, CLKCON.CLKSPD must be 000
-.PKTCTRL0: Bit 3 set as reserved
- FSCTRL0: Changed range to ±202 kHz to ±209 kHz for CC1110Fx
- MDMCFG2.DEM_DCFILT_OFF=1: Only for data rates ≤ 100 kBaud:
- MDMCFG2.MOD_FORMAT: Added setting for ASK/OOK
- MCSM2.RX_TIME_RSSI: Added note regarding ASK/OOK modulation
- FOCCFG.FOC_LIMIT: Added note regarding ASK/OOK modulation
AGCCTRL0.FILTER_LENGTH Added note regarding ASK/OOK modulation
- TEST2: Changed value for improved sensitivity
- FREQEST: Changed range to ±202 kHz to ±209 kHz for CC1110Fx. Added info regarding
ASK/OOK modulation
- LQI.CRC_OK: Removed reference to CC2400_EN bit, which has been removed
Table 79: Document History
SWRS033F
Page 239 of 242
CC1110Fx / CC1111Fx
21.2 Product Status Definitions
Data Sheet Identification
Product Status
Definition
Advance Information
Planned or Under
Development
This data sheet contains the design specifications for product
development. Specifications may change in any manner without
notice.
Preliminary
Experimental and
Prototype Devices
This data sheet contains preliminary data, and supplementary
data will be published at a later date. Texas Instruments reserves
the right to make changes at any time without notice in order to
improve design and supply the best possible product. The
product at this point is not yet fully qualified.
No Identification Noted
Full Production
This data sheet contains the final specifications. Texas
Instruments reserves the right to make changes at any time
without notice in order to improve design and supply the best
possible product.
Obsolete
Not In Production
This data sheet contains specifications on a product that has
been discontinued by Texas Instruments. The data sheet is
printed for reference information only.
Table 80: Product Status Definitions
SWRS033F
Page 240 of 242
CC1110Fx / CC1111Fx
22
Address Information
Texas Instruments Norway AS
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NORWAY
Tel: +47 22 95 85 44
Fax: +47 22 95 85 46
Web site: http://www.ti.com/lpw
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Internet
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SWRS033F
Page 241 of 242
CC1110Fx / CC1111Fx
Asia
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SWRS033F
Page 242 of 242
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