PHILIPS CLRC632 Multiple protocol contactless reader ic Datasheet

INTEGRATED CIRCUITS
& I•CODE
CL RC632
Multiple Protocol Contactless Reader IC
Product Specification
Revision 3.0
Confidential
Philips
Semiconductors
May 2003
Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
CL RC632
CONTENTS
1
GENERAL INFORMATION ..................................................................................................................7
1.1
Scope ....................................................................................................................................................7
1.2
General Description...............................................................................................................................7
1.3
Features ................................................................................................................................................8
1.4
Ordering Information .............................................................................................................................8
2
BLOCK DIAGRAM ...............................................................................................................................9
3
PINNING INFORMATION ...................................................................................................................10
3.1
Pin Configuration.................................................................................................................................10
3.2
Pin Description ....................................................................................................................................11
4
DIGITAL INTERFACE ........................................................................................................................13
4.1
Overview of Supported µ-Processor Interfaces ..................................................................................13
4.2
Automatic µ-Processor Interface Type Detection ...............................................................................13
4.3
4.3.1
4.3.2
4.3.3
Connection to Different µ-Processor Types ........................................................................................14
Separated Read/Write Strobe .............................................................................................................14
Common Read/Write Strobe ...............................................................................................................15
Common Read/Write Strobe and Hand-Shake Mechanism: EPP ......................................................16
4.4
SPI compatible interface .....................................................................................................................17
5
CL RC632 REGISTER SET ................................................................................................................20
5.1
5.1.1
CL RC632 Registers Overview ...........................................................................................................20
Register Bit Behaviour.........................................................................................................................22
5.2
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.2.7
5.2.8
Register Description ............................................................................................................................23
Page 0: Command and Status ............................................................................................................23
Page 1: Control and Status .................................................................................................................31
Page 2: Transmitter and Control .........................................................................................................38
Page 3: Receiver and Decoder Control ..............................................................................................44
Page 4: RF-Timing and Channel Redundancy ...................................................................................51
Page 5: FIFO, Timer and IRQ- Pin Configuration ...............................................................................58
Page 6: RFU........................................................................................................................................63
Page 7: Test Control ...........................................................................................................................64
5.3
CL RC632 Register Flags Overview ...................................................................................................68
5.4
5.4.1
5.4.2
5.4.3
Modes of Register Addressing ............................................................................................................72
Paging Mechanism..............................................................................................................................72
Dedicated Address Bus.......................................................................................................................72
Multiplexed Address Bus.....................................................................................................................72
6
MEMORY ORGANISATION OF THE E²PROM .................................................................................73
6.1
Diagram of the E²PROM Memory Organisation..................................................................................73
6.2
Product Information Field (Read Only)................................................................................................74
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
CL RC632
6.3
6.3.1
6.3.2
6.3.3
6.3.4
Register Initialisation Files (Read/Write) .............................................................................................75
Start Up Register Initialisation File (Read/Write).................................................................................75
Shipment Content of Start Up Register Initialisation File ....................................................................76
Register Initialisation File (Read/Write)...............................................................................................77
Content of I●CODE1 and ISO15693 STart Up Register Values.........................................................78
6.4
6.4.1
6.4.2
Crypto1 Keys (Write Only)...................................................................................................................78
Key Format..........................................................................................................................................79
Storage of Keys in the E²PROM .........................................................................................................79
7
FIFO BUFFER.....................................................................................................................................80
7.1
Overview..............................................................................................................................................80
7.2
7.2.1
Accessing the FIFO Buffer ..................................................................................................................80
Access Rules.......................................................................................................................................80
7.3
Controlling the FIFO-Buffer .................................................................................................................81
7.4
Status Information about the FIFO-Buffer ...........................................................................................81
7.5
Register Overview FIFO Buffer ...........................................................................................................82
8
INTERRUPT REQUEST SYSTEM .....................................................................................................83
8.1
8.1.1
Overview..............................................................................................................................................83
Interrupt Sources Overview.................................................................................................................83
8.2
8.2.1
8.2.2
Implementation of Interrupt Request Handling....................................................................................84
Controlling Interrupts and their Status.................................................................................................84
Accessing the Interrupt Registers .......................................................................................................84
8.3
Configuration of Pin IRQ .....................................................................................................................84
8.4
Register Overview Interrupt Request System .....................................................................................85
9
TIMER UNIT ........................................................................................................................................86
9.1
Overview..............................................................................................................................................86
9.2
9.2.1
9.2.2
9.2.3
9.2.4
9.2.5
Implementation of the Timer Unit ........................................................................................................87
Block Diagram .....................................................................................................................................87
Controlling the Timer Unit....................................................................................................................88
Timer Unit Clock and Period ...............................................................................................................88
Status of the Timer Unit.......................................................................................................................89
TimeSlotPeriod....................................................................................................................................89
9.3
9.3.1
9.3.2
9.3.3
9.3.4
Usage of the Timer Unit ......................................................................................................................90
Time-Out- and Watch-Dog-Counter ....................................................................................................90
Stop Watch ..........................................................................................................................................91
Programmable One-Shot Timer ..........................................................................................................91
Periodical Trigger ................................................................................................................................91
9.4
Register Overview Timer Unit .............................................................................................................92
10
POWER REDUCTION MODES ..........................................................................................................93
10.1
Hard Power Down ...............................................................................................................................93
10.2
Soft Power Down.................................................................................................................................93
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
CL RC632
10.3
Stand By Mode....................................................................................................................................94
10.4
Receiver Power Down.........................................................................................................................94
11
START UP PHASE .............................................................................................................................95
11.1
Hard Power Down Phase ....................................................................................................................95
11.2
Reset Phase........................................................................................................................................95
11.3
Initialising Phase .................................................................................................................................95
11.4
Initialising the Parallel Interface-Type .................................................................................................96
12
OSCILLATOR CIRCUITRY ................................................................................................................97
13
TRANSMITTER PINS TX1 AND TX2 .................................................................................................98
13.1
Configuration of TX1 and TX2.............................................................................................................98
13.2
Operating Distance versus Power Consumption ................................................................................99
13.3
13.3.1
13.3.2
13.3.3
Antenna Driver Output Source Resistance .........................................................................................99
Source Resistance Table ..................................................................................................................100
Formula for the Source Resistance...................................................................................................101
Calculating the Effective Source Resistance ....................................................................................101
13.4
Pulse Width .......................................................................................................................................102
14
RECEIVER CIRCUITRY ...................................................................................................................103
14.1
General..............................................................................................................................................103
14.2
Block Diagram ...................................................................................................................................103
14.3
14.3.1
14.3.2
14.3.3
14.3.4
Putting the Receiver into Operation ..................................................................................................104
Automatic Clock-Q Calibration ..........................................................................................................104
Amplifier.............................................................................................................................................105
Correlation Circuitry...........................................................................................................................106
Evaluation and Digitizer Circuitry ......................................................................................................106
15
SERIAL SIGNAL SWITCH ...............................................................................................................107
15.1
General..............................................................................................................................................107
15.2
Block Diagram ...................................................................................................................................107
15.3
Registers Relevant for the Serial Signal Switch................................................................................108
15.3.1 Active Antenna Concept....................................................................................................................109
15.3.2 Driving Two RF-Parts ........................................................................................................................109
16
MIFARE® HIGHER BAUDRATES ....................................................................................................110
17
ISO14443 B.......................................................................................................................................111
18
CL RC632 COMMAND SET .............................................................................................................112
18.1
General Description...........................................................................................................................112
18.2
General Behaviour ............................................................................................................................112
18.3
CL RC632 Commands Overview ......................................................................................................112
18.3.1 Basic States ......................................................................................................................................114
18.3.2 StartUp Command 3Fhex....................................................................................................................114
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
CL RC632
18.3.3 Idle Command 00hex ..........................................................................................................................114
18.4
18.4.1
18.4.2
18.4.3
18.4.4
18.4.5
Commands for ISO14443 A Card Communication ...........................................................................115
Transmit Command 1Ahex..................................................................................................................115
Receive Command 16hex ...................................................................................................................119
Transceive Command 1Ehex ..............................................................................................................122
States of the Card Communication ...................................................................................................122
State Diagram for the Card Communication .....................................................................................123
18.5
18.5.1
18.5.2
18.5.3
18.5.4
18.5.5
Commands for I•CODE1 and ISO15693 Label Communication ......................................................124
Transmit Command 1Ahex..................................................................................................................124
Receive Command 16hex ...................................................................................................................126
Transceive Command 1Ehex ..............................................................................................................128
States of the Label Communication ..................................................................................................128
State Diagram for the Label Communication ....................................................................................128
18.6
Commands to Access the E²PROM..................................................................................................130
18.6.1 WriteE2 Command 01hex ...................................................................................................................130
18.6.2 ReadE2 Command 03hex ...................................................................................................................132
18.7
Diverse Commands...........................................................................................................................132
18.7.1 LoadConfig Command 07hex..............................................................................................................132
18.7.2 CalcCRC Command 12hex .................................................................................................................133
18.8
Error Handling during Command Execution......................................................................................134
18.9
18.9.1
18.9.2
18.9.3
18.9.4
MIFARE® Classic Security Commands.............................................................................................135
LoadKeyE2 Command 0Bhex .............................................................................................................135
LoadKey Command 19hex ..................................................................................................................135
Authent1 Command 0Chex .................................................................................................................136
Authent2 Command 14hex..................................................................................................................136
19
MIFARE CLASSIC AUTHENTICATION AND CRYPTO1..............................................................137
19.1
General..............................................................................................................................................137
19.2
Crypto1 Key Handling .......................................................................................................................137
19.3
Performing MIFARE Classic Authentication....................................................................................138
20
TYPICAL APPLICATION..................................................................................................................139
20.1
Circuit Diagram..................................................................................................................................139
20.2
20.2.1
20.2.2
20.2.3
20.2.4
Circuit Description .............................................................................................................................140
EMC Low Pass Filter.........................................................................................................................140
Antenna matching .............................................................................................................................140
Receiving Circuit ...............................................................................................................................141
Antenna Coil......................................................................................................................................141
21
TEST SIGNALS ................................................................................................................................142
21.1
General..............................................................................................................................................142
21.2
Measurements Using the Serial Signal Switch .................................................................................142
21.2.1 Tx-Control..........................................................................................................................................143
21.2.2 Rx-control ..........................................................................................................................................144
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
CL RC632
21.3
Analog Test-Signals ..........................................................................................................................145
21.4
Digital Test-Signals ...........................................................................................................................146
21.5
Examples of ISO14443A Analog- and Digital Test Signals .............................................................147
21.6
Examples of I•CODE1 Analog- and Digital Test Signals ..................................................................148
22
ELECTRICAL CHARACTERISTICS ................................................................................................149
22.1
Absolute Maximum Ratings...............................................................................................................149
22.2
Operating Condition Range...............................................................................................................149
22.3
Current Consumption ........................................................................................................................149
22.4
22.4.1
22.4.2
22.4.3
Pin Characteristics ............................................................................................................................150
Input Pin Characteristics ...................................................................................................................150
Digital Output Pin Characteristics .....................................................................................................151
Antenna Driver Output Pin Characteristics .......................................................................................151
22.5
22.5.1
22.5.2
22.5.3
AC Electrical Characteristics .............................................................................................................152
AC Symbols.......................................................................................................................................152
AC Operating Specification ...............................................................................................................153
Clock Frequency ...............................................................................................................................157
23
E²PROM CHARACTERISTICS ........................................................................................................158
24
ESD SPECIFICATION ......................................................................................................................159
25
PACKAGE OUTLINES .....................................................................................................................160
25.1
SO32 .................................................................................................................................................160
26
DISCLAIMERS..................................................................................................................................161
26.1
Life support applications....................................................................................................................161
26.2
Licence Policy ...................................................................................................................................161
27
REVISION HISTORY ........................................................................................................................162
27.1
Update from Revision 2.0 to Revision 3.0.........................................................................................162
27.2
Versions Up to Revision 3.0 ..............................................................................................................162
Contact Information......................................................................................................................................163
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
1
1.1
CL RC632
GENERAL INFORMATION
Scope
This document describes the functionality of the CL RC632. It includes the functional and electrical
specifications and gives details on how to design-in this device from system and hardware viewpoint.
1.2
General Description
The CL RC632 is member of a new family of highly integrated reader ICs for contactless communication at
13.56 MHz. This reader IC family utilises an outstanding modulation and demodulation concept completely
integrated for all kinds of passive contactless communication methods and protocols at 13.56 MHz. The CL
RC632 is pin- compatible to the MF RC500, the MF RC530, the MF RC531 and the SL RC 400.
The CL RC632 supports all layers of the ISO14443 including the type A and type B communication scheme.
The CL RC632 supports contactless communication using MIFARE® Higher Baudrates. The receiver part
provides a robust and efficient implementation of a demodulation and decoding circuitry for signals from
ISO14443 compatible transponders.
The digital part handles the complete ISO14443 framing and error detection (Parity & CRC). Additionally it
supports the fast MIFARE® Classic security algorithm to authenticate MIFARE Classic (e.g. MIFARE®
Standard, MIFARE® Light) products.
The CL RC632 supports all layers of I•CODE1 and ISO 15693. The receiver part provides a robust and
efficient implementation of a demodulation and decoding circuitry for signals from I•CODE1 and ISO 15693
compatible transponders. The digital part handles I•CODE1 and ISO 15693 framing and error detection
(CRC).
The internal transmitter part is able to drive an antenna designed for proximity operating distance (up to 100
mm) directly without additional active circuitry.
A comfortable parallel interface, which can be directly connected to any 8-bit µ-Processor gives high
flexibility for the reader/terminal design.
Additionally a SPI compatible interface is supported.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
1.3
CL RC632
Features
• Highly integrated analog circuitry to demodulate and decode card/label response
• Buffered output drivers to connect an antenna with minimum number of external components
• Proximity operating distance (up to 100 mm)
• Supports ISO 14443 A&B
• Supports MIFARE® Dual Interface Card ICs and supports MIFARE® Classic protocol
• Supports contactless communication with MIFARE® higher baudrates up to 424 kbaud
• Supports I•CODE1 and ISO 15693
• Crypto1 and secure non-volatile internal key memory
• Pin-compatible to the MF RC500, MF RC530, MF RC531 and the SL RC400
• Parallel µ-Processor interface with internal address latch and IRQ line
• SPI compatible interface
• Flexible interrupt handling
• Automatic detection of parallel µ-Processor interface type
• Comfortable 64 byte send and receive FIFO-buffer
• Hard reset with low power function
• Power down mode per software
• Programmable timer
• Unique serial number
• User programmable start-up configuration
• Bit- and byte-oriented framing
• Independent power supply pins for digital, analog and transmitter part
• Internal oscillator buffer to connect 13.56 MHz quartz, optimised for low phase jitter
• Clock frequency filtering
• 3.3 V to 5 V operation for transmitter (antenna driver) in short range and proximity applications
• 3.3 V or 5V operation for the digital part
1.4
Ordering Information
Type Number
CL RC632 01T/0FE
Package
Name
Description
SO32
Small Outline Package; 32 leads
Table 1-1: CL RC632 Ordering Information
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
2
CL RC632
BLOCK DIAGRAM
N_WR, N_RD, N_CS
ALE
A0, A1, A2
D0 to D7
FIFO Control
DVDD
Voltage
Monitor
&
Power On
Detect
Parallel Interface Control
(incl. Automatic Interface Detection & Synchronisation)
DVSS
State Machine
64 Byte FIFO
Command Register
Reset
Control
Programable Timer
Power Down
Control
RSTPD
Control Register Bank
Interrupt Control
IRQ
CRC16/CRC8
Generation & Check
EEPROM
32 x 16 Byte EEPROM Access
Control
Parallel/Seriell Converter
Bit Counter
Master Key Buffer
Parity Generation & Check
Cyrpto1 Unit
Frame Generation & Check
Bit Decoding
Bit Coding
32 Bit Pseudo Random
Generator
MFIN
Serial Data Switch
MFOUT
Level Shifters
Amplitude
Rating
Correlation and Bit Decoding
Clock
Generation,
Filtering and
Distribution
Oscillator
Q-Clock
Generation
Power On
Detect
Reference
Voltage
Analog Test
MUX
I-Channel
Amplifier
Q-Channel
Amplifier
I-Channel
Demodulator
Q-Channel
Demodulator
OSCIN
OSCOUT
V+
GND
V+
AUX
AVSS
Transmitter Control
GND
VMID
AVDD
RX
TVSS
TX1
TX2
TVDD
Figure 1-1: CL RC632 Block Diagram
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
3
3.1
CL RC632
PINNING INFORMATION
Pin Configuration
Pins denoted by bold letters are supplied by AVDD and AVSS. Pins drawn with bold lines are supplied by
TVSS and TVDD. All other pins are supplied by DVDD and DVSS.
OSCIN
1
32
OSCOUT
IRQ
2
31
RSTPD
MFIN
3
30
VMID
MFOUT
4
29
RX
TX1
5
28
AVSS
TVDD
6
27
AUX
TX2
7
26
AVDD
TVSS
8
25
DVDD
NCS
9
24
A2
NWR
10
23
A1
NRD
11
22
A0
DVSS
12
21
ALE
D0
13
20
D7
D1
14
19
D6
D2
15
18
D5
D3
16
17
D4
CL RC632
SO32
Figure 3-1: CL RC632 Pin Configuration for SO32 package
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
3.2
CL RC632
Pin Description
Pin Types: I...Input;
PIN
SYMBOL
O...Output;
PWR...Power
TYPE
DESCRIPTION
1
OSCIN
I
Crystal Oscillator Input: input to the inverting amplifier of the oscillator.
This pin is also the input for an externally generated clock (fosc = 13.56 MHz).
2
IRQ
O
Interrupt Request: output to signal an interrupt event
3
MFIN
I
MIFARE Interface Input: accepts a digital, serial data stream according to
ISO14443A (MIFARE)
42
MFOUT
O
MIFARE Interface Output: delivers a serial data stream according to ISO14443A
(MIFARE)
I•CODE Interface Output: delivers a serial data stream according to I•CODE1 and
ISO 15693
5
TX1
O
Transmitter 1: delivers the modulated 13.56 MHz energy carrier
6
TVDD
7
TX2
O
Transmitter 2: delivers the modulated 13.56 MHz energy carrier
8
TVSS
PWR
Transmitter Ground: supplies the output stage of TX1 and TX2
9
NCS
I
Not Chip Select: selects and activates the µ-Processor interface of the CL RC632
NWR
I
Not Write: strobe to write data (applied on D0 to D7) into the CL RC632 register
101
1
11
PWR
Transmitter Power Supply: supplies the output stage of TX1 and TX2
R/NW
I
Read Not Write: selects if a read or write cycle shall be performed.
nWrite
I
Not Write: selects if a read or write cycle shall be performed
NRD
I
Not Read: strobe to read data from the CL RC632 register (applied on D0 to D7)
NDS
I
Not Data Strobe: strobe for the read and the write cycle
nDStrb
I
Not Data Strobe: strobe for the read and the write cycle
12
DVSS
PWR
13
D0
O
Master In Slave Out (MISO), SPI interface,
13
…
201
D0 to D7
I/O
8 Bit Bi-directional Data Bus
AD0 to AD7
I/O
8 Bit Bi-directional Address and Data Bus
211
221
Digital Ground
ALE
I
Address Latch Enable: signal to latch AD0 to AD5 into the internal address latch
when HIGH.
AS
I
Address Strobe: strobe signal to latch AD0 to AD5 into the internal address latch
when HIGH.
nAStrb
I
Not Address Strobe: strobe signal to latch AD0 to AD5 into the internal address latch
when LOW.
NSS
I
Not Slave Select: strobe for the SPI communication
A0
I
Address Line 0: Bit 0 of register address
nWait
O
Not Wait: signals with LOW that an access-cycle may started and with HIGH that it
may be finished.
MOSI
I
Master Out Slave In, SPI interface
PIN Description (continued)
1
These pins offer different functionality according to the selected µ-Processor interface type. For detailed
information, refer to chapter 4.
2
The SL RC400 uses the name SIGOUT for the MFOUT pin. The CLRC 632 functionality includes the test possibilities
for the SL RC 400 using the pin MFOUT.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
PIN
23
241
SYMBOL
TYPE
CL RC632
DESCRIPTION
A1
I
Address Line 1: Bit 1 of register address
A2
I
Address Line 2: Bit 2 of register address
SCK
I
Serial Clock: Clock for the SPI interface
25
DVDD
PIWR
Digital Power Supply
26
AVDD
PWR
Analog Power Supply
27
AUX
28
AVSS
29
RX
30
VMID
31
RSTPD
I
Reset and Power Down: When HIGH, internal current sinks are switched off, the
oscillator is inhibited, and the input pads are disconnected from the outside world.
With a negative edge on this pin the internal reset phase starts.
32
OSCOUT
O
Crystal Oscillator Output: Output of the inverting amplifier of the oscillator.
O
PWR
I
PWR
Auxiliary Output: This pin delivers analog test signals. The signal delivered on this
output may be selected by means of the TestAnaOutSel Register.
Analog Ground
Receiver Input: Input pin for the cards response, which is the load modulated 13.56
MHz energy carrier, that is coupled out from the antenna circuit.
Internal Reference Voltage: This pin delivers the internal reference voltage.
Note: It has to be supported by means of a 100 nF block capacitor.
Table 3-1: CL RC632 Pin Description
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
4
CL RC632
DIGITAL INTERFACE
4.1
Overview of Supported µ-Processor Interfaces
The CL RC632 supports direct interfacing of various µ-Processors. Alternatively the Enhanced Parallel Port
(EPP) of personal computers can be connected directly. The following table shows the parallel interface
signals supported by the CL RC632:
Bus Control Signals
Separated Read and Write
Strobes
Common Read and Write
Strobe
Common Read and Write
Strobe with Handshake
Bus
Separated Address and Data Bus
Multiplexed Address and Data Bus
control
NRD, NWR, NCS
NRD, NWR, NCS, ALE
address
A0, A1, A2
AD0, AD1, AD2, AD3, AD4, AD5
data
D0 … D7
AD0 … AD7
control
R/NW, NDS, NCS
R/NW, NDS, NCS, AS
address
A0, A1, A2
AD0, AD1, AD2, AD3, AD4, AD5
data
D0 … D7
AD0 … AD7
control
nWrite, nDStrb, nAStrb, nWait
-
address
AD0, AD1, AD2, AD3, AD4, AD5
(EPP)
data
AD0 … AD7
Table 4-1: Supported µ-Processor Interface Signals
4.2
Automatic µ-Processor Interface Type Detection
After every Power-On or Hard Reset, the CL RC632 also resets its parallel µ-Processor interface mode and
checks the current µ-Processor interface type.
The CL RC632 identifies the µ-Processor interface by means of the logic levels on the control pins after the
Reset Phase. This is done by a combination of fixed pin connections (see below) and a dedicated
initialisation routine (see 11.4).
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
4.3
CL RC632
Connection to Different µ-Processor Types
The connection to different µ-Processor types is shown in the following table:
Parallel Interface Type
Separated Read/Write Strobe
Common Read/Write Strobe
CL RC632
Dedicated
Address Bus
Multiplexed
Address Bus
Dedicated
Address Bus
Multiplexed
Address Bus
Multiplexed
Address Bus with
Handshake
ALE
HIGH
ALE
HIGH
AS
nAStrb
A2
A2
LOW
A2
LOW
HIGH
A1
A1
HIGH
A1
HIGH
HIGH
A0
A0
HIGH
A0
LOW
nWait
NRD
NRD
NRD
NDS
NDS
nDStrb
NWR
NWR
NWR
R/NW
R/NW
nWrite
NCS
NCS
NCS
NCS
NCS
LOW
D7 ... D0
D7 ... D0
AD7 ... AD0
D7 ... D0
AD7 ... AD0
AD7 ... AD0
Table 4-2: Connection Scheme for Detecting the Parallel Interface Type
4.3.1
SEPARATED READ/WRITE STROBE
CL RC632
Address Bus (A3...An)
Address
Decoder
CL RC632
NCS
Non Multiplexed Address
Address
Decoder
LOW
Address Bus (A0...A2)
A0...A2
HIGH
HIGH
Data Bus (D0...D7)
HIGH
Read Strobe (NRD)
Write Strobe (NWR)
D0...D7
Multiplexed Address/Data (AD0...AD7)
Address Latch Enable (ALE)
ALE
Read Strobe (NRD)
NRD
Write Strobe (NWR)
NWR
NCS
A2
A1
A0
D0...D7
ALE
NRD
NWR
Figure 4-1: Connection to µ-Processors with Separated Read/Write Strobes
For timing specification refer to chapter 22.5.2.1.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
4.3.2
CL RC632
COMMON READ/WRITE STROBE
CL RC632
Address Bus (A3...An)
Address
Decoder
CL RC632
NCS
Non Multiplexed Address
Address
Decoder
LOW
Address Bus (A0...A2)
A0...A2
Data Bus (D0...D7)
D0...D7
HIGH
Data Strobe (NDS)
Read/Write (R/NW)
HIGH
LOW
Multiplexed Address/Data (AD0...AD7)
Address Strobe (AS)
ALE
Data Strobe (NDS)
NRD
Read/Write (R/NW)
NWR
NCS
A2
A1
A0
D0...D7
ALE
NRD
NWR
Figure 4-2: Connection to µ-Processors with Common Read/Write Strobes
For timing specification refer to chapter 22.5.2.2.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
4.3.3
CL RC632
COMMON READ/WRITE STROBE AND HAND-SHAKE MECHANISM: EPP
CL RC632
LOW
NCS
HIGH
A2
A1
A0
HIGH
nWait
D0...D7
Multiplexed Address/Data (AD1...AD8)
Address Strobe (nAStrb)
ALE
Data Strobe (nDStrb)
NRD
Read/Write (nWrite)
NWR
Figure 4-3: Connection to µ-Processors with Common Read/Write Strobes and Hand-Shake
For timing specification refer to chapter 22.5.2.3.
Remarks for EPP:
Although in the standard for the EPP no chip select signal is defined, the N_CS of the CL RC632 allows
inhibiting the nDStrb signal. If not used, it shall be connected to DVSS.
After each Power-On or Hard Reset the nWait signal (delivered at pin A0) is high impedance. nWait will be
defined at the first negative edge applied to nAStrb after the Reset Phase.
The CL RC632 does not support Read Address Cycle.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
4.4
CL RC632
SPI compatible interface
Additionally the serial peripheral interface (SPI) will be supported. The CL RC632 acts as a slave during the
SPI communication. The SPI clock SCK has to be generated by the master. Data communication from the
master to the slave uses the line MOSI. Line MISO is used to send data back from the CL RC632 to the
master.
CL RC632
SPI Interface
ALE
NSS
A2
SCK
A1
LOW
A0
MOSI
NRD
HIGH
NWR
HIGH
NCS
LOW
D7 ... D1
do not connect
D0
MISO
Table 4-3: SPI compatible interface
The following table shows the µ-Processor connection to the CL RC632 using the SPI interface.
CL RC632
LOW
SCK
LOW
MOSI
MISO
NSS
NCS
A2
A1
A0
D0
ALE
Figure 4-4: Connection to µ-Processors with SPI
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
CL RC632
Remarks for SPI:
The implemented SPI interface is according to a standard SPI interface.
The CL RC632 can only be addressed as a slave.
Read data:
To read out data using the SPI interface the following structure has to be used. It is possible to read out up to
n-data bytes.
The first sent byte defines both, the mode itself and the address.
byte 0
byte 1
byte 2
……..
byte n
byte n+1
MOSI
adr 0
adr 1
adr. 2
…….
adr n
00
MISO
XX
data 0
data 1
……
data n-1
data n
The address byte has to fulfil the following format. The MSB bit of the first byte sets the used mode. To read
data from the CL RC632 the MSB bit is set to 1. The bits 6-1 define the address and the last bit should be
set to 0.
According to scheme above, the last sent byte has been set to 0.
Address (MOSI)
bit 7, MSB
bit 6 - bit 1
bit 0
byte 0
1
address
RFU (0)
byte 1 to byte n
RFU (0)
address
RFU (0)
byte n+1
0
0
0
Write data:
To write data to the CL RC632 using the SPI interface the following structure has to be used. It is possible to
write out up to n-data bytes.
The first send byte defines both, the mode itself and the address.
byte 0
byte 1
byte 2
……….
byte n
byte n+1
MOSI
adr
data 0
data 1
……….
data n-1
data n
MISO
XX
XX
XX
……….
XX
XX
The address byte has to fulfil the following format. The MSB bit of the first byte sets the used mode. To write
data to the CL RC632 the MSB bit is set to 0. The bits 6-1 define the address and the last bit should be set to
0.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
CL RC632
The SPI write mode writes all data to the same address as defined in byte 0.
This allows an effective data writing to the CL RC632’s FIFO buffer.
Address line (MOSI)
MSB
bit 6 - bit 1
bit 0
byte 0
0
address
RFU (0)
byte 1 to byte n+1
data
Note:
The data bus pins D7…D1 have to be disconnected.
For timing specification refer to chapter 22.5.2.4
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5
CL RC632
CL RC632 REGISTER SET
Addresshex
Register Name
Function
Page 0: Command and Status
0
Page
selects the register page
1
Command
starts (and stops) the command execution
2
FIFOData
in- and output of 64 byte FIFO buffer
3
PrimaryStatus
status flags of the receiver and transmitter and of the FIFO buffer
4
FIFOLength
number of bytes buffered in the FIFO
5
SecondaryStatus
diverse status flags
6
InterruptEn
control bits to enable and disable passing of interrupt requests
7
InterruptRq
interrupt request flags
8
Page
selects the register page
9
Control
diverse control flags e.g.: timer, power saving
A
ErrorFlag
error flags showing the error status of the last command executed
B
CollPos
bit position of the first bit collision detected on the RF-interface
C
TimerValue
actual value of the timer
D
CRCResultLSB
LSB of the CRC-Coprocessor register
E
CRCResultMSB
MSB of the CRC-Coprocessor register
F
BitFraming
adjustments for bit oriented frames
10
Page
selects the register page
11
TxControl
controls the logical behaviour of the antenna driver pins TX1 and TX2
12
CWConductance
selects the conductance of the antenna driver pins TX1 and TX2
13
ModConductance
Defines the driver output conductance
14
CoderControl
sets the clock rate and the coding mode
15
ModWidth
selects the width of the modulation pulse
16
ModWidthSOF
selects the width of the modulation pulse for SOF (I•CODE Fast-Mode)
17
TypeBFraming
Defines the framing for ISO14443-B communication
18
Page
selects the register page
19
RxControl1
controls receiver behaviour
1A
DecoderControl
controls decoder behaviour
1B
BitPhase
selects the bit-phase between transmitter and receiver clock
1C
RxThreshold
selects thresholds for the bit decoder
1D
BPSKDemControl
Control BPSK receiver behaviour
1E
RxControl2
controls decoder behaviour and defines the input source for the receiver
1F
ClockQControl
controls clock generation for the 90° phase shifted Q-channel clock
Page 1: Control and Status
Page
Page 2: Transmitter and Coder
Control
CL RC632 Registers Overview
Page 3:
Receiver and Decoder Control
5.1
CL RC632 Register Set (continued)
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
Page 7:
Test Control
Page 6:
RFU
Page 5: FIFO, Timer and IRQ-Pin
Configuration
Page 4: RF-Timing and Channel
Redundancy
Page
CL RC632
Addresshex
Register Name
Function
20
Page
selects the register page
21
RxWait
selects the time interval after transmission, before receiver starts
22
ChannelRedundancy
selects the kind and mode of checking the data integrity on the RFchannel
23
CRCPresetLSB
LSB of the pre-set value for the CRC register
24
CRCPresetMSB
MSB of the pre-set value for the CRC register
25
TimeSlotPeriod
selects the time between automatically mitted Frames
26
MFOUTSelect
selects internal signal applied to pin MFOUT,
includes the MSB of value TimeSlotPeriod see register 0x25
27
PreSet27
these values shall not be changed
28
Page
selects the register page
29
FIFOLevel
defines level for FIFO over– and underflow warning
2A
TimerClock
selects the divider for the timer clock
2B
TimerControl
selects start and stop conditions for the timer
2C
TimerReload
defines the pre-set value for the timer
2D
IRQPinConfig
configures the output stage of pin IRQ
2E
PreSet2E
these values shall not be changed
2F
PreSet2F
these values shall not be changed
30
Page
selects the register page
31
RFU
reserved for future use
32
RFU
reserved for future use
33
RFU
reserved for future use
34
RFU
reserved for future use
35
RFU
reserved for future use
36
RFU
reserved for future use
37
RFU
reserved for future use
38
Page
selects the register page
39
RFU
reserved for future use
3A
TestAnaSelect
selects analog test mode
3B
RFU
reserved for future use
3C
RFU
reserved for future use
3D
TestDigiSelect
selects digital test mode
3E
RFU
reserved for future use
3F
RFU
reserved for future use
Table 5-1: CL RC632 Register Overview
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.1.1
CL RC632
REGISTER BIT BEHAVIOUR
Bits and flags for different registers behave differently, depending on their functions. In principle bits with
same behaviour are grouped in common registers.
Abbreviation
Behaviour
Description
read and
write
These bits can be written and read by the µ-Processor. Since they are used
only for control means, there content is not influenced by internal state
machines, e.g. the TimerReload-Register may be written and read by the µProcessor. It will also be read by internal state machines, but never changed by
them.
dy
dynamic
These bits can be written and read by the µ-Processor. Nevertheless, they may
also be written automatically by internal state machines, e.g. the CommandRegister changes its value automatically after the execution of the actual
command.
r
read only
These registers hold flags, which value is determined by internal states only,
e.g. the ErrorFlag-Register can not be written from external but shows internal
states.
write only
These registers are used for control means only. They may be written by the µProcessor but can not be read. Reading these registers returns an undefined
value, e.g. the TestAnaSelect-Register is used to determine the signal on pin
AUX, but it is not possible to read its content.
r/w
w
Table 5-2: Behaviour of Register Bits and its Designation
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2
CL RC632
Register Description
5.2.1
PAGE 0: COMMAND AND STATUS
5.2.1.1
Page Register
Selects the register page.
Name: Page
Access
Rights
Address: 0x00, 0x08, 0x10, 0x18,
0x20, 0x28, 0x30, 0x38
7
6
5
4
3
UsePage
Select
0
0
0
0
r/w
r/w
r/w
r/w
r/w
Reset value: 10000000, 0x80
2
1
0
PageSelect
r/w
r/w
r/w
Description of the bits
Bit
Symbol
Function
7
UsePageSelect
If set to 1, the value of PageSelect is used as register address A5, A4, and A3.
The LSBbits of the register address are defined by the address pins or the internal
address latch, respectively.
If set to 0, the whole content of the internal address latch defines the register
address. The address pins are used as described in Table 4-2.
6-3
0000
2-0
PageSelect
Reserved for future use.
The value of PageSelect is used only if UsePageSelect is set to 1. In this case, it
specifies the register page (which is A5, A4, and A3 of the register address).
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.1.2
CL RC632
Command Register
Starts and stops the command execution.
Name: Command
Address: 0x01
7
6
IFDetect
Busy
0
r
r
Access
Rights
5
4
Reset value:X0000000, 0xX0
3
2
1
0
dy
dy
dy
Command
dy
dy
dy
Description of the bits
Bit
Symbol
7
IFDetectBusy
6
0
5-0
Command
Function
Shows the status of Interface Detection Logic:
Set to 0 means ‘Interface Detection finished successfully’,
Set to 1 signs ‘Interface Detection Ongoing’.
Reserved for future use.
Activates a command according the Command Code.
Reading this register shows, which command is actually executed.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.1.3
CL RC632
FIFOData Register
In- and output of the 64 byte FIFO buffer.
Name: FIFOData
7
Address: 0x02
6
5
Reset value: XXXXXXXX, 0xXX
4
3
2
1
0
dy
dy
dy
dy
FIFOData
Access
Rights
dy
dy
dy
dy
Description of the bits
Bit
Symbol
7-0
FIFOData
Function
Data input and output port for the internal 64 byte FIFO buffer. The FIFO buffer
acts as parallel in/parallel out converter for all data stream in- and outputs.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.1.4
CL RC632
PrimaryStatus Register
Status flags of the receiver, transmitter and the FIFO buffer.
Name: PrimaryStatus
7
Address: 0x03
6
0
Access
Rights
r
5
Reset value: 00000101, 0x05
4
ModemState
r
r
r
3
2
1
0
IRq
Err
HiAlert
LoAlert
r
r
r
r
Description of the bits
Bit
Symbol
7
0
6-4
ModemState
Function
Reserved for future use.
ModemState shows the state of the transmitter and receiver state machines.
State
Name of State
Description
000
Idle
Neither the transmitter nor the receiver is in operation,
since none of them is started or
since none of them has input data.
001
TxSOF
Transmitting the ‘Start Of Frame’ Pattern.
010
TxData
Transmitting data from the FIFO buffer (or redundancy
check bits).
011
TxEOF
Transmitting the ‘End Of Frame’ Pattern.
100
GoToRx1
Intermediate state, when receiver starts.
GoToRx2
Intermediate state, when receiver finishes.
101
PrepareRx
Waiting until the time period selected in the RxWait
Register is expired.
110
AwaitingRx
Receiver activated; Awaiting an input signal at pin Rx.
111
Receiving
Receiving data.
3
IRQ
This bit shows, if any interrupt source requests attention (with respect to the
setting of the interrupt enable flags in the InterruptEn Register).
2
Err
This bit is set to 1, if any error flag in the ErrorFlag Register is set.
1
HiAlert
Is set to 1, when the number of bytes stored in the FIFO buffer fulfil the following
equation: HiAlert = (64 − FIFOLength) ≤ WaterLevel
Example:
0
LoAlert
FIFOLength=60, WaterLevel=4
⇒ HiAlert =1
FIFOLength=59, WaterLevel=4
⇒ HiAlert =0
Is set to 1, when the number of bytes stored in the FIFO buffer fulfil the following
equation: LoAlert = FIFOLength ≤ WaterLevel
Example:
FIFOLength=4, WaterLevel=4
⇒ LoAlert =1
FIFOLength=5, WaterLevel=4
⇒ LoAlert =0
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.1.5
CL RC632
FIFOLength Register
Number of bytes buffered in the FIFO.
Name: FIFOLength
7
Address: 0x04
6
5
Reset value: 00000000, 0x00
4
0
Access
Rights
r
3
2
1
0
r
r
r
FIFOLength
r
r
r
r
Description of the bits
Bit
Symbol
7
0
6-0
FIFOLength
Function
Reserved for future use.
Indicates the number of bytes stored in the FIFO buffer. Writing to the FIFOData
Register increments, reading decrements FIFOLength.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.1.6
CL RC632
SecondaryStatus Register
Diverse Status flags.
Name: SecondaryStatus
Access
Rights
Address: 0x05
Reset value: 01100000, 0x60
7
6
5
4
3
TRunning
E2Ready
CRCReady
0
0
r
r
r
r
r
2
1
0
RxLastBits
r
r
r
Description of the bits
Bit
Symbol
Function
7
TRunning
If set to 1, the CL RC632’s timer unit is running, e.g. the counter will decrement
the Timer Value Register with the next timer clock.
6
E2Ready
If set to 1, the CL RC632 has finished programming the E2PROM.
5
CRCReady
4-3
00
2-0
RxLastBits
If set to 1, the CL RC632 has finished calculating the CRC.
Reserved for future use.
Show the number of valid bits in the last received byte. If zero, the whole byte is
valid.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.1.7
CL RC632
InterruptEn Register
Control bits to enable and disable passing of interrupt requests.
Name: InterruptEn
Access
Rights
Address: 0x06
Reset value: 00000000, 0x00
7
6
5
4
3
2
1
0
SetIEn
0
TimerIEn
TxIEn
RxIEn
IdleIEn
HiAlertIEn
LoAlertIEn
w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
Description of the bits
Bit
Symbol
Function
7
SetIEn
6
0
5
TimerIEn
4
TxIEn
Allows the transmitter interrupt request (indicated by bit TxIRq) to be propagated
to pin IRQ. This bit can not be set or cleared directly but only by means of bit
SetIEn.
3
RxIEn
Allows the receiver interrupt request (indicated by bit RxIRq) to be propagated to
pin IRQ. This bit can not be set or cleared directly but only by means of bit SetIEn.
2
IdleIEn
Allows the idle interrupt request (indicated by bit IdleIRq) to be propagated to pin
IRQ. This bit can not be set or cleared directly but only by means of bit SetIEn.
1
HiAlertIEn
Allows the high alert interrupt request (indicated by bit HiAlertIRq) to be
propagated to pin IRQ. This bit can not be set or cleared directly but only by
means of bit SetIEn.
0
LoAlertIEn
Allows the low alert interrupt request (indicated by bit LoAlertIRq) to be
propagated to pin IRQ. This bit can not be set or cleared directly but only by
means of bit SetIEn.
Set to 1 SetIEn defines that the marked bits in the InterruptEn Register are set,
Set to 0 clears the marked bits.
Reserved for future use.
Allows the timer interrupt request (indicated by bit TimerIRq) to be propagated to
pin IRQ. This bit can not be set or cleared directly but only by means of bit SetIEn.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.1.8
CL RC632
InterruptRq Register
Interrupt request flags.
Name: InterruptRq
Access
Rights
Address: 0x07
Reset value: 00000000, 0x00
7
6
5
4
3
2
1
0
SetIRq
0
TimerIRq
TxIRq
RxIRq
IdleIRq
HiAlertIRq
LoAlertIRq
w
r/w
dy
dy
dy
dy
dy
dy
Description of the bits
Bit
Symbol
7
SetIRq
6
0
5
TimerIRq
4
TxIRq
Function
Set to 1, SetIRq defines that the marked bits in the InterruptRq Register are set.
Set to 0 SetIRq defines, that the marked bits in the InterruptRq Register are
cleared.
Reserved for future use.
Set to 1, when the timer decrements the TimerValue Register to zero.
Set to 1, when one of the following events occurs:
Transceive Command: All data transmitted.
Auth1 and Auth2 Command: All data transmitted.
WriteE2 Command: All data is programmed.
CalcCRC Command: All data is processed.
3
RxIRq
This bit is set to 1, when the receiver terminates.
2
IdleIRq
This bit is set to 1, when a command terminates by itself e.g. when the Command
Register changes its value from any command to the Idle Command.
If an unknown command is started bit IdleIRq is set.
Starting the Idle Command by the µ-Processor does not set bit IdleIRq.
1
HiAlertIRq
This bit is set to 1, when bit HiAlert is set. In opposite to HiAlert, HiAlertIRq stores
this event and can only be reset by means of bit SetIRq.
0
LoAlertIRq
This bit is set to 1, when bit LoAlert is set. In opposite to LoAlert, LoAlertIRq
stores this event and can only be reset by means of bit SetIRq.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.2
CL RC632
PAGE 1: CONTROL AND STATUS
5.2.2.1
Page Register
Selects the register page. See 5.2.1.1 Page Register.
5.2.2.2
Control Register
Diverse control flags, e.g.: timer, power saving.
Name: Control
Access
Rights
Address: 0x09
Reset value: 00000000, 0x00
7
6
5
4
3
2
1
0
0
0
StandBy
PowerDown
Crypto1On
TStopNow
TStartNow
FlushFIFO
r/w
r/w
dy
dy
dy
w
w
w
Description of the bits
Bit
Symbol
Function
7-6
00
5
StandBy
Setting this bit to 1 enters the Soft PowerDown Mode. This means, internal
current consuming blocks are switched off, the oscillator keeps running.
4
PowerDown
Setting this bit to 1 enters the Soft PowerDown Mode. This means, internal
current consuming blocks are switched off including the oscillator.
3
Crypto1On
This bit indicates that the Crypto1 unit is switched on and therefore all data
communication with the card is encrypted.
This bit can only be set to 1 by a successful execution of the Authent2 Command.
2
TStopNow
Setting this bit to 1 stops the timer immediately.
Reading this bit will always return 0.
1
TStartNow
Setting this bit to 1 starts the timer immediately.
Reading this bit will always return 0.
0
FlushFIFO
Setting this bit to 1clears the internal FIFO-buffer’s read- and write-pointer
(FIFOLength becomes 0) and the flag FIFOOvfl immediately.
Reading this bit will always return 0.
Reserved for future use
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.2.3
CL RC632
ErrorFlag Register
Error flags showing the error status of the last executed command.
Name: ErrorFlag
Access
Rights
Address: 0x0A
Reset value: 01000000, 0x40
7
6
5
4
3
2
1
0
0
KeyErr
AccessErr
FIFOOvfl
CRCErr
FramingErr
ParityErr
CollErr
r
r
r
r
r
r
r
r
Description of the bits
Bit
Symbol
Function
7
0
6
KeyErr
5
AccessErr
This bit is set to 1, if the access rights to the E²PROM are violated.
This bit is set to 0 starting an E²PROM related command.
4
FIFOOvfl
This bit is set to 1, if the µ-Processor or a CL RC632’s internal state machine (e.g.
receiver) tries to write data into the FIFO buffer although the FIFO buffer is
already full.
3
CRCErr
This bit is set to 1, if RxCRCEn is set and the CRC fails. It is cleared to 0
automatically at receiver start phase during the state PrepareRx.
2
FramingErr
1
ParityErr
0
CollErr
Reserved for future use.
This bit is set to 1, if the LoadKeyE2 or the LoadKey Command recognises, that
the input data is not coded according to the Key format definition.
This bit is set to 0 starting the LoadkeyE2 or the LoadKey command.
This bit is set to 1, if the SOF is incorrect. It is cleared automatically at receiver
start (that is during the state PrepareRx).
This bit is set to 1, if the parity check has failed. It is cleared automatically at
receiver start (that is during the state PrepareRx).
This bit is set to 1, if a bit-collision is detected. It is cleared automatically at
receiver start (that is during the state PrepareRx).
Note: only valid for communication according to ISO14443 A.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.2.4
CL RC632
CollPos Register
Bit position of the first bit collision detected on the RF- interface.
Name: CollPos
Address: 0x0B
7
6
5
Reset value: 00000000, 0x00
4
3
2
1
0
r
r
r
r
CollPos
Access
Rights
r
r
r
r
Description of the bits
Bit
Symbol
7-0
CollPos
Function
This register shows the bit position of the first detected collision in a received
frame.
Example:
0x00 indicates a bit collision in the start bit
0x01 indicates a bit collision in the 1st bit
0x08 indicates a bit collision in the 8th bit
Note: For ISO14443B a bit collision is not indicated in the CollPos register.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.2.5
CL RC632
TimerValue Register
actual value of the timer.
Name: TimerValue
7
Address:0x0C
6
5
Reset value: XXXXXXXX, 0xXX
4
3
2
1
0
r
r
r
TimerValue
Access
Rights
r
r
r
r
r
Description of the bits
Bit
Symbol
7-0
TimerValue
Function
This register shows the actual value of the timer counter.
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.2.6
CL RC632
CRCResultLSB Register
LSB of the CRC-Coprocessor register.
Name: CRCResultLSB
7
Address: 0x0D
6
5
Reset value: XXXXXXXX, 0xXX
4
3
2
1
0
r
r
r
CRCResultLSB
Access
Rights
r
r
r
r
r
Description of the bits
Bit
Symbol
7-0
CRCResultLSB
Function
This register shows the actual value of the least significant byte of the CRC
register. It is valid only if bit CRCReady is set to 1.
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.2.7
CL RC632
CRCResultMSB Register
MSB of the CRC-Coprocessor register.
Name: CRCResultMSB
7
Address: 0x0E
6
5
Reset value: XXXXXXXX, 0xXX
4
3
2
1
0
r
r
r
CRCResultMSB
Access
Rights
r
r
r
r
r
Description of the bits
Bit
Symbol
7-0
CRCResultMSB
Function
This register shows the actual value of the most significant byte of the CRC
register. It is valid only if bit CRCReady is set to 1.
For 8-bit CRC calculation the registers value is undefined.
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.2.8
CL RC632
BitFraming Register
Adjustments for bit oriented frames.
Name: BitFraming
7
Address: 0x0F
6
0
Access
Rights
r/w
5
Reset value: 00000000, 0x00
4
RxAlign
dy
dy
3
2
0
dy
r/w
1
0
TxLastBits
dy
dy
dy
Description of the bits
Bit
Symbol
7
0
6-4
RxAlign
Function
Reserved for future use
Used for reception of bit oriented frames: RxAlign defines the bit position for the
first bit received to be stored in the FIFO. Further received bits are stored in the
following bit positions.
After reception, RxAlign is cleared automatically.
Example:
3
0
2-0
TxLastBits
RxAlign = 0:
the LSB of the received bit is stored at bit 0,
second received bit is stored at bit position 1
RxAlign = 1:
the LSB of the received bit is stored at bit 1,
second received bit is stored at bit position 2
RxAlign = 7:
the LSB of the received bit is stored at bit 7,
second received bit is stored in the following byte
at bit position 0
reserved for future use
Used for transmission of bit oriented frames: TxLastBits defines the number of
bits of the last byte that shall be transmitted. A 000 indicates that all bits of the last
byte shall be transmitted.
After transmission, TxLastBits is cleared automatically.
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.3
CL RC632
PAGE 2: TRANSMITTER AND CONTROL
5.2.3.1
Page Register
Selects the register page. See 5.2.1.1 Page Register.
5.2.3.2
TxControl Register
Controls the logical behaviour of the antenna pin TX1 and TX2.
Name: TxControl
7
0
Access
Rights
r/w
Address: 0x11
6
5
ModulatorSource
r/w
r/w
Reset value: 01011000, 0x58
4
3
2
1
0
Force
100ASK
TX2Inv
TX2Cw
TX2RFEn
TX1RFEn
r/w
r/w
r/w
r/w
r/w
Description of the bits
Bit
Symbol
7
0
6-5
Modulator
Source
Function
This value shall not be changed
Selects the source for the modulator input:
00:
LOW
01:
HIGH
10:
Internal Coder
11:
Pin MFIN
4
Force100ASK
Set to 1, Force100ASK forces a 100% ASK Modulation independent of the setting
in the ModConductance Register.
3
TX2Inv
Set to 1, the output signal on pin TX2 will deliver an inverted 13.56 MHz energy
carrier.
2
TX2Cw
Set to 1, the output signal on pin TX2 will deliver continuously the un-modulated
13.56 MHz energy carrier.
Setting TX2Cw to 0 enables modulation of the 13.56 MHz energy carrier.
1
TX2RFEn
Set to 1, the output signal on pin TX2 will deliver the 13.56 MHz energy carrier
modulated by the transmission data.
If TX2RFEn is 0, TX2 drives a constant output level.
0
TX1RFEn
Set to 1, the output signal on pin TX1 will deliver the 13.56 MHz energy carrier
modulated by the transmission data.
If TX1RFEn is 0, TX1 drives a constant output level.
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.3.3
CL RC632
CwConductance Register
Selects the conductance of the antenna driver pins TX1 and TX2.
Name: CwConductance
Access
Rights
Address: 0x12
7
6
0
0
r/w
r/w
5
Reset value: 00111111, 0x3F
4
3
2
1
0
r/w
r/w
r/w
GsCfgCW
r/w
r/w
r/w
Description of the bits
Bit
Symbol
7-6
00
5-0
GsCfgCW
Function
These values shall not be changed
The value of this register defines the conductance of the output driver. This may
be used to regulate the output power and subsequently current consumption and
operating distance.
Note: For detailed information about GsCfgCW see 13.3
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.3.4
CL RC632
ModConductance Register
defines the driver output conductance.
Name: ModConductance
Access
Rights
Address: 0x13
7
6
0
0
r/w
r/w
5
Reset value: 00111111, 0x03F
4
3
2
1
0
r/w
r/w
r/w
GsCfgMod
r/w
r/w
r/w
Description of the bits
Bit
Symbol
7-6
00
5-0
GsCfgMod
Function
These values shall not be changed
The value of this register defines the conductance of the output driver for the time
of modulation. This may be used to regulate the modulation index.
Note: If Force100ASK is set to one, the value of GsCfgMod has no effect.
For detailed information about GsCfgMod see 13.3
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.3.5
CL RC632
CoderControl Register
sets the clock rate and the coding mode
Name: CoderControl
Access
Rights
Address:0x14
7
6
SendOne
Pulse
0
r/w
r/w
5
Reset value: 00011001, 0x19
4
3
2
CoderRate
r/w
r/w
1
0
TxCoding
r/w
r/w
r/w
r/w
Description of the bits
Bit
Symbol
7
SendOnePulse
6
0
5-3
CoderRate
Function
Set to 1, forces to generate only one Mudulation (for ISO 15693 only). This is
used to switch to the next TimeSlot if the Inventory command is used.
This bit is not cleared automatically, it has to be re-set to 0 by the user.
These values shall not be changed
This register defines the clock rate for Coder Circuit
000:
001:
010:
011:
100:
101:
110:
111:
2-0
TxCoding
MIFARE® 848 kBaud
MIFARE® 424 kBaud
MIFARE® 212 kBaud
MIFARE® 106 kBaud; ISO14443 A
ISO 14443-B
For I●CODE1 standard mode and ISO 15693 (~52.97kHz)
For I●CODE1 fast mode (~26.48kHz)
RFU
This register defines the bit coding Mode and Framing during Transmission
000:
001:
010:
011:
100:
101:
110:
111:
NRZ according ISO14443-B
MIFARE®, ISO14443-A, (Miller coded)
RFU
RFU
For I●CODE1 standard mode (1 out of 256 coding)
For I●CODE1 fast mode (RZ coding)
For ISO 15693 standard mode (1 out of 256 coding)
For ISO 15693 fast mode (1 out of 4 coding)
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.3.6
CL RC632
ModWidth Register
selects the width of the modulation pulse.
Name: ModWidth
7
Address: 0x15
6
5
Reset value: 00010011, 0x13
4
3
2
1
0
r/w
r/w
r/w
r/w
ModWidth
Access
Rights
r/w
r/w
r/w
r/w
Description of the bits
Bit
Symbol
7-0
ModWidth
5.2.3.7
Function
This register defines the width of the modulation pulse according to
Tmod = 2⋅(ModWidth +1) / fc.
ModWidthSOF Register
Name: ModWidthSOF
7
Address: 0x16
6
5
Reset value: 00111111, 0x3F
4
3
2
1
0
r/w
r/w
r/w
ModWidthSOF
Access
Rights
r/w
r/w
r/w
r/w
r/w
Description of the bits
Bit
Symbol
7-0
ModWidthSOF
Function
This register defines the width of the modulation pulse for SOF
Tmod = 2⋅(ModWidth +1) / fc .
Register setting:
MIFARE® & ISO14443: 0x3F(Modulation width SOF: 9.44µs).
I•CODE1 Standard Mode: 0x3F (Modulation width SOF: 9.44µs).
I•CODE1 Fast Mode: 0x73 (Modulation width SOF: 18.88µs).
ISO 15693: 0x3F (Modulation width SOF: 9.44µs).
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.3.8
CL RC632
TypeBFraming
defines the framing for ISO 14443 B communication
Name: TypeBFraming
Access
Rights
Address: 0x17
7
6
5
NoTx
SOF
NoTx
EOF
EOF
Width
r/w
r/w
r/w
Reset value: 00111011, 0x3B
4
3
2
CharSpacing
r/w
r/w
1
0
SOFWidth
r/w
r/w
r/w
Description of the bits
Bit
Symbol
Function
7
NoTxSOF
Set to 1 TxCoder suppresses the SOF
6
NoTXEOF
Set to 1 TxCoder suppresses the EOF
5
EOFWidth
0:
1:
4-2
CharSpacing
1-0
SOFWidth
Set the EOF to a length of 10 ETU
Set the EOF to a length of 11 ETU
Set the length of the EGT length between 0 and 7 ETU.
00:
01:
10:
11:
Set the SOF to a length of 10 ETU LOW and 2 ETU HIGH
Set the SOF to a length of 10 ETU LOW and 3 ETU HIGH
Set the SOF to a length of 11 ETU LOW and 2 ETU HIGH
Set the SOF to a length of 11 ETU LOW and 3 ETU HIGH
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.4
CL RC632
PAGE 3: RECEIVER AND DECODER CONTROL
5.2.4.1
Page Register
Selects the register page. See 5.2.1.1 Page Register.
5.2.4.2
RxControl1 Register
controls receiver behaviour.
Name: RxControl1
7
Address: 0x19
6
5
SubCPulses
Access
Rights
r/w
r/w
Reset value: 01110011, 0x73
4
3
ISO Selection
r/w
r/w
r/w
2
1
LPOff
r/w
0
Gain
r/w
r/w
Description of the bits
Bit
Symbol
7-5
SubCPulses
4-3
ISO Selection
Function
Defines the number of subcarrier pulses per Bit
000:
1 Pulse
001:
2 Pulses
010:
4 Pulses
011:
8 Pulses
ISO14443A&B
100: 16 Pulses
I•CODE1 , ISO15693
101:
RFU
110:
RFU
111:
RFU
00:
RFU
10:
ISO 14443 A&B
01:
I•CODE1 , ISO15693
11:
RFU
2
LPOff
Switches off a LowPassFilter at the internal amplifier.
1-0
Gain
This register defines the receivers signal voltage gain factor:
00:
20 dB
01:
24 dB
10:
31 dB
11:
35 dB
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.4.3
CL RC632
DecoderControl Register
Controls decoder behaviour.
Name: DecoderControl
Access
Rights
Address: 0x1A
7
6
5
0
RxMultiple
ZeroAfter
Coll
r/w
r/w
r/w
Reset value: 00001000, 0x08
4
3
RxFraming
r/w
r/w
2
1
0
RxInvert
0
RxCoding
r/w
r/w
r/w
Description of the bits
Bit
Symbol
7
0
6
RxMultiple
5
ZeroAfter Coll
4-3
RxFraming
2
RxInvert
1
0
0
RxCoding
Function
These values shall not be changed
If set to 0, after receiving of the Frame the receiver is deactivated
If set to 1, it is possible to receive more than one Frame
If set to 1, any bits received after a bit-collision are masked to zero. This eases
resolving the anti-collision procedure defined in ISO14443-A.
00:
01:
10:
11:
for I•CODE1
MIFARE®, ISO14443A
ISO 15693
ISO14443B
If set to 0, a modulation at the first half bit results a logic 1 (according I•CODE1)
If set to 1, a modulation at the first half bit results a logic 0 (according ISO15693)
These values shall not be changed
0:
1:
Manchester Coding
BPSK Coding
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.4.4
CL RC632
BitPhase Register
selects the bit-phase between transmitter and receiver clock.
Name: BitPhase
Address: 0x1B
7
6
5
Reset value: 10101101, 0xAD
4
3
2
1
0
r/w
r/w
r/w
r/w
BitPhase
Access
Rights
r/w
r/w
r/w
r/w
Description of the bits
Bit
Symbol
7-0
BitPhase
Function
Defines the phase relation between transmitter and receiver clock.
Note: The correct value of this register is essential for proper operation.
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.4.5
CL RC632
RxThreshold Register
selects thresholds for the bit decoder.
Name: RxThreshold
7
Address: 0x1C
6
5
Reset value: 11111111, 0xFF
4
3
2
MinLevel
Access
Rights
r/w
r/w
1
0
r/w
r/w
CollLevel
r/w
r/w
r/w
r/w
Description of the bits
Bit
Symbol
7-4
MinLevel
Function
Defines the minimum signal strength at the decoder input that shall be accepted.
If the signal strength is below this level, it is not evaluated.
3-0
CollLevel
Defines the minimum signal strength at the decoder input that has to be reached
by the weaker half-bit of the Manchester-coded signal to generate a bit-collision
relatively to the amplitude of the stronger half-bit.
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.4.6
CL RC632
BPSKDemControl
controls BPSK demodulation
Name: BPSKDemControl
Access
Rights
Address: 0x1D
Reset value: 00011110, 0x1E
7
6
5
4
NoRx
SOF
NoRx
EGT
NoRx
EOF
Filter
AmpDet
r/w
r/w
r/w
r/w
3
2
1
TauD
r/w
0
TauB
r/w
r/w
r/w
Description of the bits
Bit
Symbol
Function
7
NoRxSOF
If set to 1 a missing SOF in the receiving data stream will be ignored and no
framing error indicated
6
NoRxEGT
If set to 1 a too short or too long EGT in the receiving data stream will be ignored
and no framing error indicated
5
NoRxEOF
If set to 1 a missing EOF in the receiving data stream produces will be ignored
and no framing error indicated
4
FilterAmpDet
3-2
TauD
Change time-constant of internal PLL during data receiving
1-0
TauB
Change time-constant of internal PLL during burst
Switches on a HighPassFilter for amplitude detection
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.4.7
CL RC632
RxControl2 Register
controls decoder behaviour and defines the input source for the receiver.
Name:RxControl2
Access
Rights
Address: 0x1E
Reset value: 01000001, 0x41
7
6
5
4
3
2
RcvClkSelI
RxAutoPD
0
0
0
0
r/w
r/w
r/w
r/w
r/w
r/w
1
0
DecoderSource
r/w
r/w
Description of the bits
Bit
Symbol
Function
7
RcvClkSelI
If set to 1, the I-clock is used for the receiver clock.
Set to 0 indicates, that the Q-clock is used. I-clock and Q-clock are 90° phase
shifted to each other
6
RxAutoPD
If set to 1, the receiver circuit is automatically switched on before receiving and
switched off afterwards. This may be used to reduce current consumption.
If set to 0, the receiver is always activated.
5-2
0000
1-0
DecoderSource
These values shall not be changed
Selects the source for the decoder input:
00:
Low
01:
Internal Demodulator
10:
A subcarrier modulated Manchester coded signal at Pin MFIN
11:
A baseband Manchester coded signal at Pin MFIN
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.4.8
CL RC632
ClockQControl Register
controls clock generation for the 90° phase shifted Q-channel clock.
Name: ClockQControl
Address: 0x1F
7
6
5
ClkQ180Deg
ClkQCalib
0
r
r/w
r/w
Access
Rights
Reset value: 000XXXXX, 0xXX
4
3
2
1
0
dy
dy
ClkQDelay
dy
dy
dy
Description of the bits
Bit
Symbol
7
ClkQ180Deg
6
ClkQCalib
5
0
4-0
ClkQDelay
Function
If the Q-clock is phase shifted more than 180° compared to the I-clock, the bit
ClkQ180Deg is set to 1, otherwise it is 0.
If this bit is 0, the Q-clock is calibrated automatically after the Reset Phase and
after data reception from the card.
If this bit is set to 1, no calibration is performed automatically.
This value shall not be changed
This register shows the number of delay elements actually used to generate a
90°phase shift of the I-clock to obtain the Q-clock.
It can be written directly by the µ-Processor or by the automatic calibration cycle.
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.5
CL RC632
PAGE 4: RF-TIMING AND CHANNEL REDUNDANCY
5.2.5.1
Page Register
Selects the register page. See 5.2.1.1 Page Register.
5.2.5.2
RxWait Register
Selects the time interval after transmission, before receiver starts.
Name: RxWait
Address: 0x21
7
6
5
Reset value: 00000101, 0x06
4
3
2
1
0
r/w
r/w
r/w
r/w
RxWait
Access
Rights
r/w
r/w
r/w
r/w
Description of the bits
Bit
Symbol
7-0
RxWait
Function
After data transmission, the activation of the receiver is delayed for RxWait bitclocks. During this ‘frame guard time’ any signal at pin Rx is ignored.
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.5.3
CL RC632
ChannelRedundancy Register
Selects kind and mode of checking the data integrity on the RF-channel.
Name: ChannelRedundancy
Access
Rights
Address: 0x22
Reset value: 00000011, 0x03
7
6
5
4
3
2
1
0
0
0
CRC
3309
CRC8
RxCRCEn
TxCRCEn
ParityOdd
ParityEn
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
Description of the bits
Bit
Symbol
7-6
00
5
CRC3309
Function
This value shall not be changed
If set to 1, CRC-calculation is done according ISO/IEC3309 (ISO14443B) and ISO
15693.
Note: For usage according to ISO14443A this bit has to be 0.
For usage according to I•CODE1 this bit has to be 0.
4
CRC8
If set to 1, an 8-bit CRC is calculated.
If set to 0, a 16-bit CRC is calculated.
3
RxCRCEn
If set to 1, the last byte(s) of a received frame is/are interpreted as CRC byte/s.
If the CRC itself is correct the CRC byte(s) is/are not passed to the FIFO.
In case of an error, the CRCErr flag is set.
If set to 0, no CRC is expected.
2
TxCRCEn
If set to 1, a CRC is calculated over the transmitted data and the CRC byte(s) are
appended to the data stream.
If set to 0, no CRC is transmitted.
1
ParityOdd
If set to 1, an odd parity is generated or expected, respectively.
If set to 0 an even parity is generated or expected, respectively.
Note: For usage according to ISO14443-A this bit has to be 1.
0
ParityEn
If set to 1, a parity bit is inserted in the transmitted data stream after each byte
and expected in the received data stream after each byte (MIFARE®, ISO14443A)
If set to 0, no parity bit is inserted or expected (ISO14443B)
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.5.4
CL RC632
CRCPresetLSB Register
LSB of the preset value for the CRC register.
Name: CRCPresetLSB
7
Address: 0x23
6
5
Reset value: 01010011, 0x63
4
3
2
1
0
r/w
r/w
r/w
CRCPresetLSB
Access
Rights
r/w
r/w
r/w
r/w
r/w
Description of the bits
Bit
Symbol
Function
7-0
CRCPresetLSB
CRCPresetLSB defines the starting value for CRC-calculation. This value is
loaded into the CRC at the beginning of transmission, reception and the CalcCRC
Command, if the CRC calculation is enabled.
To use the ISO 15693 functionality the CRCPresetLSB Register has to be set to
0xFF.
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.5.5
CL RC632
CRCPresetMSB Register
MSB of the preset value for the CRC register.
Name: CRCPresetMSB
7
Address: 0x24
6
5
Reset value: 01010011, 0x63
4
3
2
1
0
r/w
r/w
r/w
CRCPresetMSB
Access
Rights
r/w
r/w
r/w
r/w
r/w
Description of the bits
Bit
Symbol
Function
7-0
CRCPresetMSB
CRCPresetMSB defines the starting value for CRC-calculation. This value is
loaded into the CRC at the beginning of transmission, reception and the CalcCRC
Command, if the CRC calculation is enabled.
Note: This register is not relevant, if CRC8 is 1.
54
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.5.6
CL RC632
TimeSlotPeriod Register
defines the time slot period for I•CODE1 protocol.
Name: TimeSlotPeriod
7
Address: 0x25
6
5
Reset value: 00000000, 0x00
4
3
2
1
0
r/w
r/w
r/w
TimeSlotPeriod
Access
Rights
r/w
r/w
r/w
r/w
r/w
Description of the bits
Bit
Symbol
Function
7-0
TimeSlotPeriod
TimeSlotPeriod defines the time between automatically transmitted Frames. To
send a Quit-Frame according to the I•CODE1 protocol, it is necessary to have a
relation to the beginning of the Command-Frame. The TimeSlotPeriod will start at
the End of the Command transmission. For detailed information see also chapter
9.2.5
55
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.5.7
CL RC632
MFOUTSelect Register
Selects internal signal applied to pin MFOUT.
Name: MFOUTSelect
Access
Rights
Address: 0x26
Reset value:00000000, 0x00
7
6
5
4
3
0
0
0
TimeSlot
Period
MSB
0
r/w
r/w
r/w
r/w
r/w
2
1
0
MFOUTSelect
r/w
r/w
r/w
Description of the bits
Bit
Symbol
7-5
00000
4
TimeSlotPeriod
MSB
3
0
2-0
MFOUTSelect
Function
These values shall not be changed
MSB of value TimeSlotPeriod see register 0x25
These values shall not be changed
MFOUTSelect defines which signal is routed to pin MFOUT.
000
Constant Low
001
Constant High
010
Modulation Signal (envelope) from internal coder, Miller coded
011
Serial data stream, not Miller coded
100
Output signal of the energy carrier demodulator (card modulation
signal)
Note: only valid MIFARE® and ISO14443 A at a baudrate of 106
kbaud.
101
Output signal of the subcarrier demodulator (Manchester coded card
signal)
Note: only valid MIFARE® and ISO14443 A at a baudrate of 106
kbaud.
110
RFU
111
RFU
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.5.8
PreSet27 Register
Name: PreSet27
Access
Rights
CL RC632
Address: 0x27
Reset value: xxxxxxxx, 0xxx
7
6
5
4
3
2
1
0
x
x
x
x
x
x
x
x
w
w
w
w
w
w
w
w
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.6
CL RC632
PAGE 5: FIFO, TIMER AND IRQ- PIN CONFIGURATION
5.2.6.1
Page Register
Selects the register page. See 5.2.1.1 Page Register.
5.2.6.2
FIFOLevel Register
Defines the level for FIFO under- and overflow warning.
Name: FIFOLevel
Access
Rights
Address: 0x29
7
6
0
0
r/w
r/w
5
Reset value:00001000, 0x08
4
3
2
1
0
r/w
r/w
WaterLevel
r/w
r/w
r/w
r/w
Description of the bits
Bit
Symbol
7-6
00
5-0
WaterLevel
Function
These values shall not be changed
This register defines, the warning level of the CL RC632 for the µ-Processor for a
FIFO-buffer over- or underflow:
HiAlert is set to 1, if the remaining FIFO-buffer space is equal or less than
WaterLevel bytes in the FIFO-buffer.
LoAlert is set to 1, if equal or less than WaterLevel bytes are in the FIFO-buffer.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.6.3
CL RC632
TimerClock Register
Selects the divider for the timer clock.
Name: TimerClock
Access
Rights
Address: 0x2A
7
6
5
0
0
TAutoRestart
r/w
r/w
r/w
Reset value: 00000111, 0x07
4
3
2
1
0
r/w
r/w
TPreScaler
r/w
r/w
r/w
Description of the bits
Bit
Symbol
7-6
00
5
TAutoRestart
4-0
TPreScaler
Function
These values shall not be changed
If set to 1, the timer automatically restart its count-down from TReloadValue,
instead of counting down to zero.
If set to 0 the timer decrements to zero and the bit TimerIRq is set to 1.
Defines the timer clock fTimer. TPreScaler can be adjusted from 0 up to 21. The
following formula is used to calculate fTimer :
fTimer = 13.56 MHz / 2TPreScaler.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.6.4
CL RC632
TimerControl Register
Selects start and stop conditions for the timer.
Name: TimerControl
Access
Rights
Address: 0x2B
Reset value: 00000110, 0x06
7
6
5
4
3
2
1
0
0
0
0
0
TStopRxEnd
TStopRxBegin
TStartTxEnd
TStartTxBegin
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
Description of the bits
Bit
Symbol
Function
7-4
0000
3
TStopRxEnd
2
TStopRxBegin
1
TStartTxEnd
If set to 1, the timer starts automatically when data transmission ends. If the timer
is already running, the timer restarts by loading TReloadValue into the timer.
0 indicates, that the timer is not influenced by this condition.
0
TStartTxBegin
If set to 1, the timer is starts automatically when the first bit is transmitted. If the
timer is already running, the timer restarts by loading TReloadValue into the timer.
0 indicates, that the timer is not influenced by this condition.
These values shall not be changed
If set to 1, the timer stops automatically when data reception ends.
0 indicates, that the timer is not influenced by this condition.
If set to 1, the timer stops automatically, when the first valid bit is received.
0 indicates, that the timer is not influenced by this condition.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.6.5
CL RC632
TimerReload Register
Defines the preset value for the timer.
Name: TimerReload
7
Address: 0x2C
6
5
Reset value: 00001010, 0x0A
4
3
2
1
0
r/w
r/w
r/w
TReloadValue
Access
Rights
r/w
r/w
r/w
r/w
r/w
Description of the bits
Bit
Symbol
7-0
TreloadValue
Function
With a start event the timer loads with the TreloadValue. Changing this register
affects the timer only with the next start event.
If TReloadValue is set to 0, the timer cannot start.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.6.6
CL RC632
IRQPinConfig Register
Configures the output stage for pin IRQ.
Name: IRQPinConfig
Access
Rights
Address: 0x2D
Reset value: 00000010, 0x02
7
6
5
4
3
2
1
0
0
0
0
0
0
0
IRQInv
IRQPushPull
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
Description of the bits
Bit
Symbol
7-2
000000
These values shall not be changed
1
IRQInv
If set to 1, the signal on pin IRQ is inverted with respect to bit IRq.
0 indicates, that the signal on pin IRQ is equal to bit IRQ.
0
IRQPushPull
5.2.6.7
Function
If set to 1, pin IRQ works as standard CMOS output pad.
0 indicates, that pin IRQ works as open drain output pad.
PreSet2E
Name: PreSet2E
Access
Rights
5.2.6.8
Address: 0x2E
7
6
5
4
3
2
1
0
x
x
x
x
x
x
x
x
w
w
w
w
w
w
w
w
Preset2F
Name: PreSet2F
Access
Rights
Reset value: xxxxxxxx, 0xxx
Address: 0x2F
Reset value: xxxxxxxx, 0xxx
7
6
5
4
3
2
1
0
x
x
x
x
x
x
x
x
w
w
w
w
w
w
w
w
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.7
CL RC632
PAGE 6: RFU
5.2.7.1
Page Register
Selects the register page. See 5.2.1.1 Page Register.
5.2.7.2
RFU Registers
Name: RFU
Access
Rights
Address: 0x31, 0x32, 0x33, 0x34,
0x35, 0x36, 037
Reset value:xxxxxxxx, 0xxx
7
6
5
4
3
2
1
0
x
x
x
x
x
x
x
x
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
Note: These registers are reserved for future use.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.8
CL RC632
PAGE 7: TEST CONTROL
5.2.8.1
Page Register
Selects the register page. See 5.2.1.1 Page Register.
5.2.8.2
RFU Register
Name: RFU
Access
Rights
Address: 0x39
Reset value: xxxxxxxx, 0xxx
7
6
5
4
3
2
1
0
x
x
x
x
x
x
x
x
w
w
w
w
w
w
w
w
Note: This register is reserved for future use.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.8.3
CL RC632
TestAnaSelect Register
Selects analog test signals.
Name: TestAnaSelect
Access
Rights
Address: 0x3A
Reset value: 00000000, 0x00
7
6
5
4
0
0
0
0
w
w
w
w
3
2
1
0
TestAnaOutSel
w
w
w
w
Description of the bits
Bit
Symbol
7-4
0000
3-0
TestAnaOutSel
Function
These values shall not be changed
This register selects the internal analog signal that is routed to pin AUX.
For detailed information see 21.3
Value
Signal Name
0
Vmid
1
Vbandgap
2
VRxFollI
3
VRxFollQ
4
VRxAmpI
5
VRxAmpQ
6
VCorrNI
7
VCorrNQ
8
VCorrDI
9
VCorrDQ
A
VEvalL
B
VEvalR
C
VTemp
D
RFU
E
RFU
F
RFU
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.8.4
CL RC632
RFU Register
Name: RFU
Access
Rights
Address: 0x3B
Reset value: xxxxxxxx, 0xxx
7
6
5
4
3
2
1
0
x
x
x
x
x
x
x
x
w
w
w
w
w
w
w
w
Note: This register is reserved for future use.
5.2.8.5
RFU Register
Name: RFU
Access
Rights
Address: 0x3C
Reset value: xxxxxxxx, 0xxx
7
6
5
4
3
2
1
0
x
x
x
x
x
x
x
x
w
w
w
w
w
w
w
w
Note: This register is reserved for future use.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.2.8.6
CL RC632
TestDigiSelect Register
Selects digital test mode.
Name: TestDigiSelect
7
Address:0x3D
6
5
Reset value: xxxxxxxx, 0xxx
4
SignalTo
MFOUT
Access
Rights
w
3
2
1
0
w
w
w
TestDigiSignalSel
w
w
w
w
Description of the bits
Bit
Symbol
Function
7
SignalToMFOUT
Set to 1, overrules the setting in MFOUTSelect and the digital test signal defined
in TestDigiSignalSel is routed to pin MFOUT instead.
Set to 0, MFOUTSelect defines the signal delivered at pin MFOUT.
6-0
TestDigiSignalSel
Selects the digital test signal to be routed to pin MFOUT.
For detailed information refer to chapter 21.4
5.2.8.7
TestDigiSignalSel
Signal Name
F4hex
s_data
E4hex
s_valid
D4hex
s_coll
C4hex
s_clock
B5hex
rd_sync
A5hex
wr_sync
96hex
int_clock
83hex
BPSK_out
E2hex
BPSK_sig
RFU Registers
Name: RFU
Access
Rights
Address: 0x3E, 0x3F
Reset value: xxxxxxxx, 0xxx
7
6
5
4
3
2
1
0
x
x
x
x
x
x
x
x
w
w
w
w
w
w
w
w
Note: These registers are reserved for future use.
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.3
CL RC632
CL RC632 Register Flags Overview
Flag(s)
Register
Address
Register, Bit Position
AccessErr
ErrorFlag
0x0A, bit 5
BitPhase
BitPhase
0x1B, bits 7:0
CharSpacing
TypeBFraming
0x17, bits 4:2
ClkQ180Deg
ClockQControl
0x1F, bit 7
ClkQCalib
ClockQControl
0x1F, bit 6
ClkQDelay
ClockQControl
0x1F, bits 4:0
CoderRate
CoderControl
0x14, bits 5:3
CollErr
ErrorFlag
0x0A, bit 0
CollLevel
RxThreshold
0x1C, bits 3:0
CollPos
CollPos
0x0B, bits 7:0
Command
Command
0x01, bits 5:0
CRC3309
ChannelRedundancy
0x22, bit 5
CRC8
ChannelRedundancy
0x22, bit 4
CRCErr
ErrorFlag
0x0A, bit 3
CRCPresetLSB
CRCPresetLSB
0x23, bits 7:0
CRCPresetMSB
CRCPresetMSB
0x24, bits 7:0
CRCReady
SecondaryStatus
0x05 , bit 5
CRCResultMSB
CRCResultMSB
0x0E, bits 7:0
CRCResultLSB
CRCResultLSB
0x0D, bits 7:0
Crypto1On
Control
0x09, bit 3
DecoderSource
RxControl2
0x1E, bits 1:0
E2Ready
SecondaryStatus
0x05, bit 6
EOFWidth
TypeBFraming
0x17, bit 5
Err
PrimaryStatus
0x03, bit 2
FIFOData
FIFOData
0x02, bits 7:0
FIFOLength
FIFOLength
0x04, bits 7:0
FIFOOvfl
ErrorFlag
0x0A, bit 4
FilterAmpDet
BPSKDemControl
0x1D, bit 4
FlushFIFO
Control
0x09, bit 0
Force100ASK
TxControl
0x11, bit 4
FramingErr
ErrorFlag
0x0A, bit 2
Gain
RxControl1
0x19, bits 1:0
GsCfgCW
CWConductance
0x12, bits 5:0
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
Flag(s)
Register
CL RC632
Address
Register, Bit Position
GsCfgMod
ModConductance
0x13, bits 5:0
HiAlert
PrimaryStatus
0x03, bit 1
HiAlertIEn
InterruptEn
0x06, bit 1
HiAlertIRq
InterruptRq
0x07, bit 1
IdleIEn
InterruptEn
0x06, bit 2
IdleIRq
InterruptRq
0x07, bit 2
IFDetectBusy
Command
0x01, bit 7
Irq
PrimaryStatus
0x03, bit 3
IRQInv
IRQPinConfig
0x2D, bit 1
IRQPushPull
IRQPinConfig
0x2D, bit 0
ISO Selection
RxControl1
0x19, bits 4:3
KeyErr
ErrorFlag
0x0A, bit 6
LoAlert
PrimaryStatus
0x03, bit 0
LoAlertIEn
InterruptEn
0x06, bit 0
LoAlertIRq
InterruptRq
0x07, bit 0
LPOff
RxControl1
0x19, bit 2
MFOUTSelect
MFOUTSelect
0x26, bits 2:0
MinLevel
RxThreshold
0x1C, bits 7:4
ModemState
PrimaryStatus
0x03 , bit 6:4
ModulatorSource
TxControl
0x11, bits 6:5
ModWidth
ModWidth
0x15, bits 7:0
NoRxEGT
BPSKDemControl
0x1D, bit 6
NoRxEOF
BPSKDemControl
0x1D, bit 5
NoRxSOF
BPSKDemControl
0x1D, bit 7
NoTxEOF
TypeBFraming
0x17, bit 6
NoTxSOF
TypeBFraming
0x17, bit 7
PageSelect
Page
0x00, 0x08, 0x10, 0x18, 0x20,
0x28, 0x30, 0x38, bits 2:0
ParityEn
ChannelRedundancy
0x22, bit 0
ParityErr
ErrorFlag
0x0A, bit 1
ParityOdd
ChannelRedundancy
0x22 , bit 1
PowerDown
Control
0x09, bit4
RcvClkSelI
RxControl2
0x1E, bit 7
RxAlign
BitFraming
0x0F, bits 6:4
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
Flag(s)
Register
CL RC632
Address
Register, Bit Position
RxAutoPD
RxControl2
0x1E, bit 6
RxCRCEn
ChannelRedundancy
0x22, bit 3
RxCoding
DecoderControl
0x1A, bit 0
RxFraming
DecoderControl
0x1A, bits 4:3
RxIEn
InterruptEn
0x06, bit 3
RxIRq
InterruptRq
0x07, bit 3
RxLastBits
SecondaryStatus
0x05, bits 2:0
RxMultiple
DecoderControl
0x1A,bit 6
RxWait
RxWait
0x21, bits 7:0
SetIEn
InterruptEn
0x06, bit 67
SetIRq
InterruptRq
0x07, bit 7
SignalToMFOUT
TestDigiSelect
0x3D, bit 7
SOFWidth
TypeBFraming
0x17, bits 1:0
StandBy
Control
0x09, bit 5
SubCPulses
RxControl1
0x19, bits 7:5
TauB
BPSKDemControl
0x1D, bits 1:0
TauD
BPSKDemControl
0x1D, bits 3:2
TautoRestart
TimerClock
0x2A, bit 5
TestAnaOutSel
TestAnaSelect
0x3A, bits 6:4
TestDigiSignalSel
TestDigiSelect
0x3D, bit 6:0
TimerIEn
InterruptEn
0x06, bit 5
TimerIRq
InterruptRq
0x07, bit 5
TimerValue
TimerValue
0x0C, bits 7:0
TimeSlotPeriod
TimeSlotPeriod
0x25, bits 7:0
TimeSlotPeriodMSB
MFOUTSelect
0x26, bit 4
TpreScaler
TimerClock
0x2A, bits 4:0
TReloadValue
TimerReload
0x2C, bits 7:0
TRunning
SecondaryStatus
0x05, bit 7
TstartTxBegin
TimerControl
0x2B, bit 0
TstartTxEnd
TimerControl
0x2B, bit 1
TstartNow
Control
0x09, bit 1
TstopRxBegin
TimerControl
0x2B, bit 2
TstopRxEnd
TimerControl
0x2B, bit 3
TstopNow
Control
0x09, bit 2
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
Flag(s)
Register
CL RC632
Address
Register, Bit Position
TX1RFEn
TxControl
0x11, bit 0
TX2Cw
TxControl
0x11, bit 3
TX2Inv
TxControl
0x11, bit 3
TX2RFEn
TxControl
0x11, bit 1
TxCoding
CoderControl
0x14, bits 2:0
TxCRCEn
ChannelRedundancy
0x22, bit 2
TxIEn
InterruptEn
0x06, bit 4
TxIRq
InterruptRq
0x07, bit 4
TxLastBits
BitFraming
0x0F, bits 2:0
UsePageSelect
Page
0x00, 0x08, 0x10, 0x18, 0x20,
0x28, 0x30, 0x38, bit 7
WaterLevel
FIFOLevel
0x29, bits 5:0
ZeroAfterColl
DecoderControl
0x1A, bit 5
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
5.4
CL RC632
Modes of Register Addressing
Three mechanisms are valid to operate with the CL RC632:
•
Initiating functions and controlling data manipulation by executing commands
•
Configuring electrical and functional behaviour via a set of configuration bits
•
Monitoring the state of the CL RC632 by reading status flags
The commands, configuration bits and flags are accessed via the µ-Processor interface.
The CL RC632 can internally address 64 registers. This basically requires six address lines.
5.4.1
PAGING MECHANISM
The CL RC632 register set is segmented into 8 pages with 8 register each. The Page-Register can always
be addressed, no matter which page is currently selected.
5.4.2
DEDICATED ADDRESS BUS
Using the CL RC632 with dedicated address bus, the µ-Processor defines three address lines via the
address pins A0, A1, and A2. This allows addressing within a page. To switch between registers in different
pages the paging mechanism needs then to be used.
The following table shows how the register address is assembled:
Register Bit:
UsePageSelect
1
Register-Address
PageSelect2
PageSelect1
PageSelect0
A2
A1
A0
Table 5-3: Dedicated Address Bus: Assembling the Register Address
5.4.3
MULTIPLEXED ADDRESS BUS
Using the CL RC632 with multiplexed address bus, the µ-Processor may define all 6 address lines at once.
In this case either the paging mechanism or linear addressing may be used.
The following table shows how the register address is assembled:
Interface Bus Type
Register Bit:
UsePageSelect
Multiplexed Address Bus
(paging mode)
1
PageSelect2
PageSelect1
PageSelect0
AD2
AD1
AD0
Multiplexed Address Bus
(linear addressing)
0
AD5
AD4
AD3
AD2
AD1
AD0
Register-Address
Table 5-4: Multiplexed Address Bus: Assembling the Register Address
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
6
CL RC632
MEMORY ORGANISATION OF THE E²PROM
6.1
Diagram of the E²PROM Memory Organisation
Block
Number
Block Address
Byte
Addresses
Access Rights
Memory Content
See
Also
0
0
00 … 0F
r
Product Information Field
6.2
1
1
10 … 1F
r/w
2
2
20 … 2F
r/w
Start Up Register Initialisation File
6.3.1
3
3
30 … 3F
r/w
4
4
40 … 4F
r/w
5
5
50 … 5F
r/w
6
6
60 … 6F
r/w
7
7
70 … 7F
r/w
8
8
80 … 8F
w
9
9
90 … 9F
w
10
A
A0 … AF
w
11
B
B0 … BF
w
12
C
C0 … CF
w
13
D
D0 … DF
w
14
E
E0 … EF
w
15
F
F0 … FF
w
16
10
100 … 10F
w
17
11
110 … 11F
w
18
12
120 … 12F
w
19
13
130 … 13F
w
20
14
140 … 14F
w
21
15
150 … 15F
w
22
16
160 … 16F
w
23
17
170 … 17F
w
24
18
180 … 18F
w
25
19
190 … 19F
w
26
1A
1A0 … 1AF
w
27
1B
1B0 … 1BF
w
28
1C
1C0 … 1CF
w
29
1D
1D0 … 1DF
w
30
1E
1E0 … 1EF
w
31
1F
1F0 … 1FF
w
Register Initialisation File
For User data or second Initialisation
Keys for Crypto1
6.3.3
6.4
Table 6-1: Diagram of E²PROM Memory Organisation
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Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
6.2
CL RC632
Product Information Field (Read Only)
Byte
Meaning
0
1
2
3
4
5
Product Type Identification
6
7
RFU
8
9
10
11
12
Product Serial Number
13
Internal
14
15
RsMaxP
CRC
Table 6-2: Product Information Field
PRODUCT TYPE IDENTIFICATION:
The CL RC632 is a member of a new family for highly integrated reader IC’s. Each member of the product
family has its unique Product Type Identification. The value of the Product Type Identification is shown in the
table below:
Product Type Identification
Byte
0
1
2
3
4
Value
30hex
FFhex
FFhex
0Fhex
XXhex
Table 6-3: Product Type Identification Definition
Byte 4 indicates the current version number.
PRODUCT SERIAL NUMBER:
The CL RC632 holds a four byte serial number that is unique for each device.
INTERNAL:
These 2 bytes hold internal trimming parameters.
RsMaxP:
Maximum Source Resistance for the p-Channel Driver Transistor of pin TX1 and TX2
The source resistance of the p-channel driver transistors of pin TX1 and TX2 may be adjusted via the value
GsCfgCW in the CWConductance Register (see chapter 13.3). The mean value of the maximum adjustable
source resistance of the pins TX1 and TX2 is stored as an integer value in Ohms in byte RsMaxP.
This value is denoted as maximum adjustable source resistance Rsref,max,p and is measured setting
GsCfgCW in the Register CWConductance to 01hex. It is in the range between about 80 to 120 Ohm.
CRC:
The content of the product information field is secured via a CRC-byte, which is checked during start up.
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6.3
CL RC632
Register Initialisation Files (Read/Write)
Register initialisation in the register address range from 10hex to 2Fhex is done automatically during the
Initialising Phase (see 11.3), using the Start Up Register Initialisation File.
Furthermore, the user may initialise the CL RC632 registers with values from the Register Initialisation File
executing the LoadConfig-Command (see 18.7.1).
Notes:
• The Page-Register (addressed with 10hex, 18hex, 20hex, 28hex) is skipped and not initialised.
• Make sure, that all PreSet registers are not changed.
• Make sure, that all register bits that are reserved for future use (RFU) are set to 0.
6.3.1
START UP REGISTER INITIALISATION FILE (READ/WRITE)
The content of the E²PROM memory bock address 1 and 2 are used to initialise the CL RC632 registers
10hex to 2Fhex during the Initialising Phase automatically. The default values written into the E²PROM during
production are shown chapter 6.3.2.
The assignment is the following:
E²PROM Byte Address
Register Address
Remark
10hex (Block 1, Byte 0)
10hex
Skipped
11hex
11hex
Copied
…
…
2Fhex
Copied
…
2Fhex (Block 2, Byte 15)
Table 6-4: Byte Assignment for Register Initialisation at Start Up
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Multiple Protocol Contactless Reader IC
6.3.2
CL RC632
SHIPMENT CONTENT OF START UP REGISTER INITIALISATION FILE
During production test, the Start Up Register Initialisation File is initialised with the values shown in the table
below. With each power up these values are written into the CL RC632 register during the Initialising Phase.
E²PROM Byte
Address
Reg.
Address
Value
10
10
00
Page: free for user
11
11
58
TxControl: Transmitter pins TX1 and TX2 switched off, bridge driver configuration,
modulator driven from internal digital circuitry
12
12
3F
CwConductance: Source resistance of TX1 and TX2 to minimum.
13
13
3F
ModConductance: defines the output conductance
14
14
19
CoderControl: ISO14443-A coding is set
15
15
13
ModWidth: Pulse width for Miller pulse coding is set to standard configuration.
16
16
3F
ModWithSOF: Pulse width of SOF
17
17
3B
TypeFraming: ISO 14443-A framing is set
18
18
00
Page: free for user
19
19
73
RxControl1: ISO 14443-A is set and internal amplifier gain is maximum.
1A
1A
08
DecoderControl: A bit-collision always evaluates to HIGH in the data bit stream.
1B
1B
AD
BitPhase: BitPhase is set to standard configuration.
1C
1C
FF
RxThreshold: MinLevel and CollLevel are set to maximum.
1D
1D
1E
BPSKDemControl: ISO14443-A is set
41
RxControl2: Use Q-clock for the receiver, ‘Automatic Receiver Off’ is switched on,
decoder is driven from internal analog circuitry.
Description
1E
1E
1F
1F
00
ClockQControl: ‘Automatic Q-clock Calibration’ is switched on.
20
20
00
Page: free for user
21
21
06
RxWait: Frame Guard Time is set to six bit clocks.
22
22
03
ChannelRedundancy: Channel Redundancy is set according to ISO14443-A.
23
23
63
CRCPresetLSB: CRC-Preset value is set according to ISO14443-A.
24
24
63
CRCPresetMSB: CRC-Preset value is set according to ISO14443-A.
25
25
00
TimeSlotPeriod: : defines the time for the I●CODE1 time slots
26
26
00
MFOUTSelect: Pin MFOUT is set to LOW.
27
27
00
PreSet27
28
28
00
Page: free for user
29
29
08
FIFOLevel: WaterLevel FIFO buffer warning level is set to standard configuration.
2A
2A
07
TimerClock: TPreScaler is set to standard configuration, timer unit restart function is switched off.
2B
2B
06
TimerControl: Timer is started at the end of transmission, stopped at the beginning of reception.
2C
2C
0A
TimerReload: TReloadValue: the timer unit preset value is set to standard configuration.
2D
2D
02
IRQPinConfig: Pin IRQ is set to high impedance.
2E
2E
00
PreSet2E
2F
2F
00
PreSet2F
Table 6-5: Shipment Content of Start Up Configuration File
Note: The default configuration of the CL RC632 supports the MIFARE® and ISO 14443 A communication
scheme. The memory addresses 3 to 7 may be used for user specific initialisation files as I●CODE1,
ISO15693 or ISO14443 B.
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Multiple Protocol Contactless Reader IC
6.3.3
CL RC632
REGISTER INITIALISATION FILE (READ/WRITE)
The content of the E²PROM memory from block address 3 to 7 may be used to initialise the CL RC632
registers 10hex to 2Fhex by execution of the LoadConfig-Command (see 18.7.1). It requires a two bytes
argument, used as the two bytes long E²PROM starting byte address for the initialisation procedure.
The assignment is the following:
E²PROM Byte Address
Register Address
Remark
Starting Byte address for the E²PROM
10hex
Skipped
Starting Byte address for the E²PROM +1
11hex
Copied
…
…
…
Starting Byte address for the E²PROM + 31
2Fhex
Copied
Table 6-6: Byte Assignment for Register Initialisation at Start Up
The Register Initialisation File is big enough to hold the values for two initialisation sets and leaves one more
block (16 bytes) for the user.
Note: The Register Initialisation File is read- and write-able for the user. Therefore, these bytes may also be
used to store user specific data for other purposes.
The standard configuration for the CL RC632 enables the MIFARE® and ISO14443 setting after each power
up.
To give the user the needed flexibility the startup configuration might be adapted and for example the
ICODE1 start up configuration might be stored in the register block address 3 and 4.
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6.3.4
CL RC632
CONTENT OF I●CODE1 AND ISO15693 START UP REGISTER VALUES
To enable the I●CODE1 functionality the following table gives an overview on the start up values for
communication according t to the I●CODE1 and ISO15693 scheme
E²PROM Byte
Address
Reg.
Address
Value
30
10
00
Page: free for user
31
11
58
TxControl: Transmitter pins TX1 and TX2 switched off, bridge driver configuration,
modulator driven from internal digital circuitry
32
12
3F
CwConductance: Source resistance of TX1 and TX2 to minimum.
33
13
05
ModGsCfg: Source resistance of TX1 and TX2 at the time of Modulation, to determine the
modulation index
34
14
2C
CoderControl: Selects the bit coding mode and the framing during transmission
35
15
3F
ModWidth: Pulse width for “used code (1 out of 256, RZ or 1 out of 4)” pulse coding is set to
standard configuration.
36
16
3F
ModWidthSOF Pulse width of SOF
37
17
00
TypeBFraming
38
18
00
Page: free for user
39
19
8B
RxControl1: Amplifier gain is maximum.
3A
1A
00
DecoderControl: A bit-collision always evaluates to HIGH in the data bit stream.
Description
3B
1B
54
BitPhase: BitPhase is set to standard configuration.
3C
1C
68
RxThreshold: MinLevel and CollLevel are set to maximum.
3D
1D
00
BPSKDemControl
3E
1E
41
RxControl2: Use Q-clock for the receiver, ‘Automatic Receiver Off’ is switched on,
decoder is driven from internal analog circuitry.
3F
1F
00
ClockQControl: Automatic Q-clock Calibration’ is switched on.
40
20
00
Page: free for user
41
21
08
RxWait: Frame Guard Time is set to six bit clocks.
42
22
0C
ChannelRedundancy: Channel Redundancy is set according to I●CODE1.
43
23
FE
CRCPresetLSB: CRC-Preset value is set according to I●CODE1.
44
24
FF
CRCPresetMSB: CRC-Preset value is set according to I●CODE1.
45
25
00
TimeSlot Period : defines the time for the I●CODE1 time slots
46
26
00
MFOUTSelect: Pin MFOUT is set to LOW.
47
27
00
PreSet27
48
28
00
Page: free for user
49
29
3E
FIFOLevel: WaterLevel: FIFO buffer warning level is set to standard configuration.
4A
2A
0B
TimerClock: TPreScaler is set to standard configuration, timer unit restart function is switched off.
4B
2B
02
TimerControl: Timer is started at the end of transmission, stopped at the beginning of reception.
4C
2C
00
TimerReload: TReloadValue: the timer unit preset value is set to standard configuration
4D
2D
02
IRQPinConfig: Pin IRQ is set to high impedance.
4E
2E
00
PreSet2E
4F
2F
00
PreSet2F
Table 6-7: Content of I●CODE1 Start Up Configuration
6.4
Crypto1 Keys (Write Only)
The MIFARE® Classic security requires specific keys to encrypt the communication on the contactless
interface. These keys are named as crypto1 keys.
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6.4.1
CL RC632
KEY FORMAT
To store a key in the E²PROM, it has to be written in a specific format. Each key byte has to be split into the
lower four bits k0 to k3 (lower nibble) and the higher four bits k4 to k7 (higher nibble). Each nibble is stored
twice in one byte and one of the two nibbles is bit-wise inverted. This format is a precondition for successful
execution of the LoadKeyE2- (see 18.9.1) and the LoadKey-Command (see 18.9.2).
With this format, 12 bytes of the E²PROM memory are needed to store a 6 byte long key.
This is shown in the following table:
Master Key Byte
Master Key Bits
0 (LSB)
1
5 (MSB)
k7 k6 k5 k4 k7 k6 k5 k4 k3 k2 k1 k0 k3 k2 k1 k0 k7 k6 k5 k4 k7 k6 k5 k4 k3 k2 k1 k0 k3 k2 k1 k0
k7 k6 k5 k4 k7 k6 k5 k4 k3 k2 k1 k0 k3 k2 k1 k0
E²PROM Byte
Address
n
n+1
n+2
n+3
n+10
n+11
Example
5Ahex
F0hex
5Ahex
E1hex
5Ahex
A5hex
Table 6-8: Key Storage Format
Example: For the actual key A0 A1 A2 A3 A4 A5hex the value 5A F0 5A E1 5A D2 5A C3 5A B4 5A A5hex
must be written into the E²PROM.
Note: Although it is possible to load data of any other format into the key storage location of the E²PROM, it
is not possible to obtain a valid card authentication with such a key. The LoadKeyE2-Command (see 18.9.1)
will fail.
6.4.2
STORAGE OF KEYS IN THE E²PROM
The CL RC632 reserves 384 bytes of memory area in the E²PROM to hold Crypto1 keys. It uses no memory
segmentation to mirror the 12 bytes structure of key storage. Thus, every byte of the dedicated memory area
may be the start of a key.
Example: If a key loading cycle starts at the last byte address of an E²PROM block, e.g. key byte 0 is stored
at 12Fhex, the following bytes are stored in the next E²PROM block , e.g. key byte 1 is stored at 130hex, byte 2
at 131hex, up to byte 11 at 13Ahex.
With 384 bytes of memory and 12 bytes needed for one key, 32 different keys may be stored in the
E²PROM.
Note: It is not possible to load a key exceeding the E²PROM byte location 1FFhex.
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7
CL RC632
FIFO BUFFER
7.1
Overview
An 8x64 bit FIFO buffer is implemented in the CL RC632 acting as a parallel-to-parallel converter. It buffers
the input and output data stream between the µ-Processor and the internals of the CL RC632. Thus, it is
possible to handle data streams with lengths of up to 64 bytes without taking timing constraints into account.
7.2
Accessing the FIFO Buffer
7.2.1
ACCESS RULES
The FIFO-buffer input and output data bus is connected to the FIFOData Register. Writing to this register
stores one byte in the FIFO-buffer and increments the internal FIFO-buffer write-pointer. Reading from this
register shows the FIFO-buffer contents stored at the FIFO-buffer read-pointer and increments the FIFObuffer read-pointer. The distance between the write- and read-pointer can be obtained by reading the
FIFOLength Register.
When the µ-Processor starts a command, the CL RC632 may, while the command is in progress, access the
FIFO-buffer according to that command. Physically only one FIFO-buffer is implemented, which can be used
in input- and output direction. Therefore the µ-Processor has to take care, not to access the FIFO-buffer in
an unintended way.
The following table gives an overview on FIFO access during command processing:
Active Command
µ-Processor is allowed to
Write to FIFO
Read from FIFO
StartUp
-
-
Idle
-
-
Transmit
Receive
µ-Processor has to know the actual state of the command
(transmitting or receiving)
Transceive
WriteE2
The µ-Processor has to prepare the arguments,
afterwards only reading is allowed
ReadE2
LoadKeyE2
-
LoadKey
-
Authent1
-
Authent2
Remark
-
-
LoadConfig
-
CalcCRC
-
Table 7-1: Allowed Access to the FIFO-Buffer
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7.3
CL RC632
Controlling the FIFO-Buffer
Besides writing to and reading from the FIFO-buffer, the FIFO-buffer pointers might be reset by setting the bit
FlushFIFO. Consequently, FIFOLength becomes zero, FIFOOvfl is cleared, the actually stored bytes are not
accessible anymore and the FIFO-buffer can be filled with another 64 bytes again.
7.4
Status Information about the FIFO-Buffer
The µ-Processor may obtain the following data about the FIFO-buffers status:
•
•
•
•
Number of bytes already stored in the FIFO-buffer: FIFOLength
Warning, that the FIFO-buffer is quite full: HiAlert
Warning, that the FIFO-buffer is quite empty: LoAlert
Indication, that bytes were written to the FIFO-buffer although it was already full: FIFOOvfl
FIFOOvfl can be cleared only by setting bit FlushFIFO.
The CL RC632 can generate an interrupt signal
• If LoAlertIRq is set to 1 it will activate Pin IRQ when LoAlert changes to 1.
• If HiAlertIRq is set to 1 it will activate Pin IRQ when HiAlert changes to 1.
The flag HiAlert is set to 1 if only WaterLevel bytes or less can be stored in the FIFO-buffer. It is generated
by the following equation:
HiAlert = (64 − FIFOLength) ≤ WaterLevel
The flag LoAlert is set to 1 if WaterLevel bytes or less are actually stored in the FIFO-buffer. It is generated
by the following equation:
LoAlert = FIFOLength ≤ WaterLevel
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7.5
CL RC632
Register Overview FIFO Buffer
The following table shows the related flags of the FIFO buffer in alphabetic order.
Flags
Register
Address
Register, bit position
FIFOLength
FIFOLength
0x04, bits 6-0
FIFOOvfl
ErrorFlag
0x0A, bit 4
FlushFIFO
Control
0x09, bit 0
HiAlert
PrimaryStatus
0x03, bit 1
HiAlertIEn
InterruptIEn
0x06, bit 1
HiAlertIRq
InterruptIRq
0x07, bit 1
LoAlert
PrimaryStatus
0x03, bit 0
LoAlertIEn
InterruptIEn
0x06, bit 0
LoAlertIRq
InterruptIRq
0x07, bit 0
WaterLevel
FIFOLevel
0x29, bits 5-0
Table 7-2. Registers associated with the FIFO Buffer
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8
CL RC632
INTERRUPT REQUEST SYSTEM
8.1
Overview
The CL RC632 indicates certain events by setting bit IRq in the PrimaryStatus-Register and, in addition, by
activating pin IRQ. The signal on pin IRQ may be used to interrupt the µ-Processor using its interrupt
handling capabilities. This allows the implementation of efficient µ-Processor software.
8.1.1
INTERRUPT SOURCES OVERVIEW
The following table shows the integrated interrupt flags, the related source and the condition for its setting.
The interrupt flag TimerIRq indicates an interrupt set by the timer unit. The setting is done when the timer
decrements from 1 either down to zero (TAutoRestart flag disabled) or to the TPreLoad value if TAutoRestart
is enabled.
The TxIRq bit indicates interrupts from different sources. If the transmitter is active and the state changes
from sending data to transmitting the end of frame pattern, the transmitter unit sets automatically the interrupt
bit. The CRC coprocessor sets TxIRq after having processed all data from the FIFO buffer. This is indicated
by the flag CRCReady = 1. If the E2Prom programming has finished the TxIRq bit is set, indicated by the bit
E2Ready = 1.
The RxIRq flag indicates an interrupt when the end of the received data is detected.
The flag IdleIRq is set if a command finishes and the content of the command register changes to idle.
The flag HiAlertIRq is set to 1 if the HiAlert bit is set to one, that means the FIFO buffer has reached the level
indicated by the bit WaterLevel, see chapter 7.4.
The flag LoAlertIRq is set to 1 if the LoAlert bit is set to one, that means the FIFO buffer has reached the
level indicated by the bit WaterLevel, see chapter 7.4.
Interrupt Flag
Interrupt Source
TimerIRq
Timer Unit
the timer counts from 1 to 0
Transmitter
a data stream, transmitted to the card, ends
TxIRq
CRC-Coprocessor
Is set automatically, when
all data from the FIFO buffer has been processed
E²PROM
all data from the FIFO buffer has been programmed
RxIRq
Receiver
a data stream, received from the card, ends
IdleIRq
Command Register
HiAlertIRq
FIFO-buffer
the FIFO-buffer is getting full
LoAlertIRq
FIFO-buffer
the FIFO-buffer is getting empty
a command execution finishes
Table 8-1: Interrupt Sources
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8.2
CL RC632
Implementation of Interrupt Request Handling
8.2.1
CONTROLLING INTERRUPTS AND THEIR STATUS
The CL RC632 informs the µ-Processor about the interrupt request source by setting the according bit in the
InterruptRq Register. The relevance of each interrupt request bit as source for an interrupt may be masked
with the interrupt enable bits of the InterruptEn Register.
Register
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
InterruptEn
SetIEn
rfu
TimerIEn
TxIEn
RxIEn
IdleIEn
HiAlertIEn
LoAlertIEn
InterruptRq
SetIRq
rfu
TimerIRq
TxIRq
RxIRq
IdleIRq
HiAlertIRq
LoAlertIRq
Table 8-2: Interrupt Control Registers
If any interrupt request flag is set to 1 (showing that an interrupt request is pending) and the corresponding
interrupt enable flag is set the status flag IRq in the PrimaryStatus Register is set to 1. Furthermore different
interrupt sources can be set active simultaneously. Therefore, all interrupt request bits are ‘OR’ed and
connected to the flag IRq and forwarded to pin IRQ.
8.2.2
ACCESSING THE INTERRUPT REGISTERS
The interrupt request bits are set automatically by the internal state machines of the CL RC632. Additionally
the µ-Processor has access in order to set or to clear them.
A special implementation of the InterruptRq and the InterruptEn Register allows the change a single bit
status without influencing the other ones. If a specific interrupt register shall be set to one, the bit SetIxx has
to be set to 1 and simultaneously the specific bit has to be set to 1 too. Vice versa, if a specific interrupt flag
shall be cleared, a zero has to be written to the SetIxx and simultaneously the specific address of the
interrupt register has to be set to 1. If a bit content shall not be changed during the setting or clearing phase
a zero has to be written to the specific bit location.
Example: writing 3Fhex to the InterruptRq Register clears all bits as SetIRq in this case is set to 0 and all
other bits are set to 1. Writing 81hex sets bit LoAlertIRq to 1 and leaves all other bits untouched.
8.3
Configuration of Pin IRQ
The logic level of the status flag IRq is visible at pin IRQ. In addition, the signal on pin IRQ may be controlled
by the following bits of the IRQPinConfig Register:
•
•
IRQInv: if set to 0, the signal on pin IRQ is equal to the logic level of bit IRq.
If set to 1, the signal on pin IRQ is inverted with respect to bit IRq.
IRQPushPull: if set to 1, pin IRQ has standard CMOS output characteristics
otherwise it is an open drain output and an external resistor is necessary to achieve a HIGH level at this
pin.
Note: During the Reset Phase (see 11.2) IRQInv is set to 1 and IRQPushPull to 0. This results in a high
impedance at pin IRQ.
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8.4
CL RC632
Register Overview Interrupt Request System
The following table shows the related flags of the Interrupt Request System in alphabetic order.
Flags
Register
Address
Register, bit position
HiAlertIEn
InterruptEn
0x06, bit 1
HiAlertIRq
InterruptRq
0x07, bit 1
IdleIEn
InterruptEn
0x06, bit 2
IdleIRq
InterruptRq
0x07, bit 2
IRq
PrimaryStatus
0x03, bit 3
IRQInv
IRQPinConfig
0x07, bit 1
IRQPushPull
IRQPinConfig
0x07, bit 0
LoAlertIEn
InterruptEn
0x06, bit 0
LoAlertIRq
InterruptRq
0x07, bit 0
RxIEn
InterruptEn
0x06, bit 3
RxIRq
InterruptRq
0x07, bit 3
SetIEn
InterruptEn
0x06, bit 7
SetIRq
InterruptRq
0x07, bit 7
TimerIEn
InterruptEn
0x06, bit 5
TimerIRq
InterruptRq
0x07, bit 5
TxIEn
InterruptEn
0x06, bit 4
TxIRq
InterruptRq
0x07, bit 4
Table 8-3 Registers associated with the Interrupt Request System
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9
9.1
CL RC632
TIMER UNIT
Overview
A timer is implemented in the CL RC632. It derives its clock from the 13.56 MHz chip-clock. The µ-Processor
may use this timer to manage timing relevant tasks.
The timer unit may be used in one of the following configurations:
•
•
•
•
•
Timeout-Counter
Watch-Dog Counter
Stop Watch
Programmable One-Shot
Periodical Trigger
The timer unit can be used to measure the time interval between two events or to indicate that a specific
event occurred after a specific time. The timer can be triggered by events which will be explained in the
following, but the timer itself does not influence any internal event (e.g. A timeout during data receiving does
not influence the receiving process automatically). Furthermore, several timer related flags are set and these
flags can be used to generate an interrupt.
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9.2
9.2.1
CL RC632
Implementation of the Timer Unit
BLOCK DIAGRAM
The following block diagram shows the timer module.
TReloadValue [7:0]
TStartTxBegin
TxBegin Event
TStartTxEnd
parallel in
TxEnd Event
start counter /
parallel load
TAutoRestart
TStartNow
Q S
TRunning
Q
R
TStopNow
stop counter
Counter Module
(x <= x-1)
RxEnd Event
TStopRxEnd
RxBegin Event
TStopRxBegin
TPreScaler [4:0]
Clock
Divider
13.56 MHz
>clock
parallel out
to Parallel Interface
TimerValue [7:0]
Counter = 0 ?
to Interrupt Logic: TimerIRq
Figure 9-1: Timer Module Block Diagram
The timer unit is designed in a way, that several events in combination with enabling flags start or stop the
counter. For example, setting the bit TStartTxBegin to 1 enables to control the receiving of data using the
timer unit. In addition, the first received bit is indicated by TxBeginEvent. This combination starts the counter
at the defined TReloadValue.
The timer stops either automatically if the counter value is equal to zero, or if a defined stop event happens.
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9.2.2
CL RC632
CONTROLLING THE TIMER UNIT
The main part of the timer unit is a down-counter. As long as the down-counter value is unequal zero, it
decrements its value with each timer clock.
If TAutoRestart is enabled the timer does not decrement down to zero. Having reached the value 1 the timer
reloads with the next clock with the TimerReload value.
The timer is started immediately by loading a value from the TimerReload Register into the counter module.
This may be triggered by one of the following events:
•
•
•
Transmission of the first bit to the card (TxBegin Event) and bit TStartTxBegin is 1
Transmission of the last bit to the card (TxEnd Event) and bit TStartTxEnd is 1
Bit TStartNow is set to 1 (by the µ-Processor)
Note: Every start event reloads the timer from the TimerReload Register. Thus, the timer unit is re-triggered.
The timer can be configured to stop with one of the following events:
•
•
•
•
Reception of the first valid bit from the card (RxBegin Event) and bit TStopRxBegin is set to 1
Reception of the last bit from the card (RxEnd event) and bit TStopRxEnd is set to 1
The counter module has decrement down to zero and bit TAutoRestart is set to 0
Bit TStopNow is set to 1 (by the µ-Processor)
Loading a new value, e.g. zero, into the TimerReload Register does not immediately influence the counter,
since the TimerReload Register affects the counter units content only with the next start event. Thus, the
TimerReload Register may be changed even if the timer unit is already counting. The consequence of
changing the TimerReload Register will be visible after the next start event.
If the counter is stopped by setting bit TstopNow, no TimerIRq is signalled.
9.2.3
TIMER UNIT CLOCK AND PERIOD
The clock of the timer unit is derived from the 13.56 MHz chip clock via a programmable divider. The clock
selection is done with the TPreScaler Register that defines the timer unit clock frequency according to the
following formula:
TTimerClock =
1
f TimerClock
2T Pr eScaler
=
13.56MHz
The possible values for the TPreScaler Register range from 0 up to 21 resulting in minimum time TTimerClock of
about 74 ns up to about 150 ms.
The time period elapsed since the last start event is calculated with
TTimer =
TReLoadValue − TimerValue
f TimerClock
resulting in a minimum time TTimer of about 74 ns up to about 40 s.
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9.2.4
CL RC632
STATUS OF THE TIMER UNIT
The TRunning bit in the SecondaryStatus Register shows the timer’s current status. Any configured start
event starts the timer at the TReloadValue and changes the status flag TRunning to 1, any configured stop
event stops the timer and sets the status flag TRunning back to 0. As long as status flag TRunning is set to
1, the TimerValue Register changes with the next timer unit clock.
The actual timer unit content can be read directly via the TimerValue Register.
9.2.5
TIMESLOTPERIOD
For sending of I•CODE1-Quit-Frames it is necessary to generat a exact chronological relation to the begin of
the command frame.
Is TimeSlotPeriod > 0, with the end of command transmission the TimeSlotPeriod starst.
If there are Data in the FIFO after reaching the end of TimeSlotPeriod, these data were sent at that moment.
If the FIFO is empty nothing happens.
As long as the contend of TimeSlotPeriod is > 0 the counter for the TimeSlotPeriod will start automatically
after reaching the end.
This allows a exact time relation to the end (as well as to the beginning) of the command frame for the
generation and sending of the I•CODE1-Quit-Frames
Is TimeSlotPeriod > 0 the next Frame starts exact with the interval
TimeSlotPeriod/CoderRate
delayed after each previous Send Frame. CoderRate defines the clock frequency of the coder.
If TimeSlotPeriod = 0, the send function will not be triggered automatically.
The content of the register TimeSlotPeriod can be changed during the active mode. The modification take
effect at the next restart of the TimeSlotPeriod.
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Example:
CoderRate = 0x05 (~52.97kHz)
For I•CODE1 standard mode the interval should be 8.458ms
->TimeSlotPeriod = CoderRate * interval = 52.97kHz * 8.458ms –1 = 447 (447 = 0x1BF)
Note: The MSB of the TimeSlotPeriod is in the MFOUTSelect register.
Quit1
Command
Quit2
Response1
Response2
TSP1
TSP2
TimeSlotPeriod for TSP1
TimeSlotPeriod for TSP2
I•CODE1 Standard Mode
0xBF
0x1BF
I•CODE1 Fast Mode
0x5F
0x67
Note: It is strictly recommended that bit TxCRCEn is set to 0 before the Quit-Frame is sent. If the TxCRCEn
is not set to 0 a CRC value is calculated and sent with the Quit-Frame.
To calculate the Quit value a CRC8 algorithm has to be used.
9.3
9.3.1
Usage of the Timer Unit
TIME-OUT- AND WATCH-DOG-COUNTER
Having started the timer by setting TReloadValue the timer unit decrements the TimerValue Register
beginning with a certain start event. If a certain stop event occurs e.g. a bit is received from the card, the
timer unit stops (no interrupt is generated).
On the other hand, if no stop event occurs, e.g. the card does not answer in the expected time, the timer unit
decrements down to zero and generates a timer interrupt request. This signals the µ-Processor that the
expected event has not occurred in the given time TTimer.
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9.3.2
CL RC632
STOP WATCH
The time TTimer between a certain start- and stop event may be measured by the µ-Processor by means of
the CL RC632 timer unit. Setting TReloadValue the timer starts to decrement. If the defined stop event
occurs the timers stops. The time between start and stop can be calculated by
∆T = (T Re load value − Timervalue )* TTimer
if the timer does not decrements down to zero.
9.3.3
PROGRAMMABLE ONE-SHOT TIMER
The µ-Processor starts the timer unit and waits for the timer interrupt. After the specified time TTimer the
interrupt will occur.
9.3.4
PERIODICAL TRIGGER
If the µ-Processor sets bit TAutoRestart, it will generate an interrupt request periodically after every TTimer.
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9.4
CL RC632
Register Overview Timer Unit
The following table shows the related flags of the Timer Unit in alphabetic order.
Flags
Register
Address
TautoRestart
TimerClock
0x2A, bit 5
TimerValue
TimerValue
0x0C, bits 7-0
TimerReloadValue
TimerReload
0x2C, bits 7-0
TpreScaler
TimerClock
0x2A, bits 4-0
Trunning
SecondaryStatus
0x05, bit 7
TstartNow
Control
0x09, bit 1
TstartTxBegin
TimerControl
0x2B, bit 0
TstartTxEnd
TimerControl
0x2B, bit 1
TstopNow
Control
0x09, bit 2
TstopRxBegin
TimerControl
0x2B, bit 2
TstopRxEnd
TimerControl
0x2B, bit 3
Table 9-1 Registers associated with the Timer Unit
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10
CL RC632
POWER REDUCTION MODES
10.1 Hard Power Down
A Hard Power Down is enabled with HIGH on pin RSTPD. This turns off all internal current sinks including
the oscillator. All digital input buffers are separated from the input pads and defined internally (except pin
RSTPD itself). The output pins are frozen at a certain value.
This is shown in the following table.
SYMBOL
PIN
TYPE
DESCRIPTION
OSCIN
1
I
Not separated from input, pulled to AVSS
IRQ
2
O
High impedance
MFIN
3
I
Separated from Input
MFOUT
4
O
LOW
TX1
5
O
TX2
7
O
NWR
9
I
Separated from Input
NRD
10
I
Separated from Input
NCS
11
I
Separated from Input
D0 to D7
13 to 20
I/O
Separated from Input
ALE
21
I
Separated from Input
A0
22
I/O
Separated from Input
A1
23
I
Separated from Input
A2
24
I
Separated from Input
AUX
27
O
High impedance
RX
29
I
Not changed
VMID
30
A
Pulled to AVDD
RSTPD
31
I
Not changed
OSCOUT
32
O
HIGH
HIGH, if TX1RFEn=1
LOW, if TX1RFEn=0
HIGH, only if TX2RFEn=1 and TX2Inv=0
LOW
Table 10-1: Signal on Pins during Hard Power Down
10.2 Soft Power Down
The Soft Power Down-mode is entered immediately by setting bit PowerDown in the Control-Register. All
internal current sinks are switched off (including the oscillator buffer).
In difference to the Hard Power Down-mode, the digital input-buffers are not separated by the input pads and
keep their functionality. The digital output pins do not change their state.
After resetting bit PowerDown in the Control-Register it needs 512 clocks until the Soft Power Down mode is
left indicated by the PowerDown bit itself. Resetting it does not immediately clear it. It is cleared
automatically by the CL RC632 when the Soft Power Down-Mode is left.
Note: If the internal oscillator is used, you have to take into account that it is supplied by AVDD and it will
take a certain time tosc until the oscillator is stable and the clock cycles can be detected by the internal logic.
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10.3 Stand By Mode
The Stand By-mode is entered immediately by setting bit StandBy in the Control-Register. All internal current
sinks are switched off (including the internal digital clock buffer but except the oscillator buffer).
Different from the Hard Power Down-Mode, the digital input-buffers are not separated by the input pads and
keep their functionality. The digital output pins do not change their state.
Different from the Soft Power Down-Mode, the oscillator does not need time to wake up.
After resetting bit StandBy in the Control-Register it needs 4 clocks on pin OSCIN until the Stand By-Mode is
left indicated by the StandBy bit itself. Resetting it does not immediately clear it. It is cleared automatically by
the CL RC632 when the Stand By-Mode is left.
10.4 Receiver Power Down
It is power saving to switch off the receiver circuit when it is not needed and switched it on again right before
data is to be received from the card. This is done automatically by setting bit RxAutoPD to 1. If it is set to 0
the receiver is continuously switched on.
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11
CL RC632
START UP PHASE
The phases executed during the start up are shown in the following figure.
Start Up Phase
States
tPD
tReset
tInit
Hard Power
Down Phase
Reset Phase
Initialising
Phase
Ready
Figure 11-1: Start Up Procedure
11.1 Hard Power Down Phase
The Hard Power Down Phase is active during the following cases:
• Power On Reset caused by power up at pin DVDD
(active while DVDD is below the digital reset threshold)
• Power On Reset caused by power up at pin AVDD
(active while AVDD is below the analog reset threshold)
• A HIGH level on pin RSTPD
(active while pin RSTPD is HIGH)
11.2 Reset Phase
The Reset Phase follows the Hard Power Down Phase automatically. One’s the oscillator is running stable, it
takes 512 clocks. During the Reset Phase, some of the register bits are pre-set by hardware. The respective
reset values are given in the description of each register (see 5.2.).
Note: If the internal oscillator is used, you have to take into account that it is supplied by AVDD and that it will
take a certain time tosc until the oscillator is stable.
11.3 Initialising Phase
The Initialising Phase follows the Reset Phase automatically. It takes 128 clocks. During the Initialising
Phase the content of the E²PROM blocks 1 and 2 is copied into the registers 10hex to 2Fhex. (see 6.3)
Note: At production test, the CL RC632 is initialised with default configuration values. This reduces the
µ-Processors effort for configuring the device to a minimum.
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11.4 Initialising the Parallel Interface-Type
For the different connections for the different µ-Processor interface types (see 4.3), a certain initialising
sequence shall be applied to enable a proper µ-Processor interface type detection and to synchronise the
µ-Processor’s and the CL RC632’s Start Up.
During the whole Start Up Phase, the Command value reads as 3Fhex. At the end of the Initialising Phase the
CL RC632 enters the Idle Command automatically. Consequently the Command value changes to 00hex.
To ensure proper detection of the µ-Processor interface, the following sequence shall be executed:
• Read from the Command-Register until the 6 bit register value for Command is 00hex.
The internal initialisation phase is now completed and the CL RC632 is ready to be controlled.
• Write the value 80hex to the Page-Register to initialise the µ-Processor interface.
• Read the Command-Register. If its value is 00hex the µ-Processor interface initialisation was
successful.
Having done the interface initialisation, the linear addressing mode can be activated by writing 0x00 to the
page register(s).
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12
CL RC632
OSCILLATOR CIRCUITRY
MF RC531
OSCOUT
OSCIN
13.56 MHz
15 pF
15 pF
Figure 12-1: Quartz Connection
The clock applied to the CL RC632 acts as time basis for the coder and decoder of the synchronous system.
Therefore stability of the clock frequency is an important factor for proper performance. To obtain highest
performance, clock jitter has to be as small as possible. This is best achieved by using the internal oscillator
buffer with the recommended circuitry. If an external clock source is used, the clock signal has to be applied
to pin OSCIN. In this case special care for clock duty cycle and clock jitter is needed and the clock quality
has to be verified. It needs to be in accordance with the specifications in chapter 22.5.3.
Remark: We do not recommend to use an external clock source.
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13
CL RC632
TRANSMITTER PINS TX1 AND TX2
The signal delivered on TX1 and TX2 is the 13.56 MHz energy carrier modulated by an envelope signal. It
can be used to drive an antenna directly, using a few passive components for matching and filtering (see
chapter 20). For that, the output circuitry is designed with a very low impedance source resistance. The
signal of TX1 and TX2 can be controlled via the TxControl Register.
13.1 Configuration of TX1 and TX2
The configuration possibilities of TX1 are described in the table below:
Register Configuration in TxControl
TX1RFEn
FORCE100ASK
0
X
1
0
1
1
Envelope
Signal on TX1
X
LOW (GND)
0
13.56 MHz carrier frequency modulated
1
13.56 MHz carrier frequency
0
LOW
1
13.56 MHz energy carrier
Table 13-1: Configurations of Pin TX1
The configuration possibilities of TX2 are described in the table below:
Register Configuration in TxControl
Envelope
Signal on TX2
X
LOW
0
13.56 MHz carrier frequency modulated
1
13.56 MHz carrier frequency
0
13.56 MHz carrier frequency modulated,
180° phase shift relative to TX1
1
13.56 MHz carrier frequency,
180° phase shift relative to TX1
0
X
13.56 MHz carrier frequency
1
X
13.56 MHz carrier frequency, 180° phase shift
relative to TX1
0
LOW
1
13.56 MHz carrier frequency
0
HIGH
1
13.56 MHz carrier frequency,
180° phase shift relative to TX1
0
X
13.56 MHz carrier frequency
1
X
13.56 MHz carrier frequency,
180° phase shift relative to TX1
TX2RFEn
FORCE100
ASK
TX2CW
InvTX2
0
X
X
X
0
0
1
0
1
1
0
0
1
1
1
Table 13-2: Configurations of Pin TX2
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13.2 Operating Distance versus Power Consumption
The user has the possibility to find a trade-off between maximum achievable operating distance and power
consumption using different antenna matching circuits by varying the supply voltage at the antenna driver
supply pin TVDD. Different antenna matching circuits are described in the Application Note, MIFARE
Design of MF RC500 Matching Circuit and Antennas.
13.3 Antenna Driver Output Source Resistance
The output source conductance of TX1 and TX2 for driving a HIGH level may be adjusted via the value
GsCfgCW in the CwConductance Register in the range from about 1 up to 100 Ohm. The output source
conductance of Tx1 and TX2 during the modulation phase may be adjusted via the value GsCfgMod in the
ModConductance Register in the same range. The values given are relative to the reference resistance Rsrel,
that is measured during production test and stored in the CL RC632 E²PROM. It can be obtained from the
Product Information Field (see chapter 6.2). The electrical specification can be found in chapter 22.4.3.
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13.3.1 SOURCE RESISTANCE TABLE
Rsrel
[Ohm]
GsCfgCW,
GsCfgMod
[decimal]
EXPGsCfgCW,
EXPGsCfgMod
MANTGsCfgCW
MANTGsCfgMod
[decimal]
[decimal]
0
∞
24
1
8
0,0652
1
0
∞
25
1
9
0,0580
2
0
∞
37
2
5
0,0541
48
3
0
∞
26
1
10
0,0522
1
0
1
1,0000
27
1
11
0,0474
17
1
1
0,5217
51
3
3
0,0467
2
0
2
0,5000
38
2
6
0,0450
3
0
3
0,3333
28
1
12
0,0435
33
2
1
0,2703
29
1
13
0,0401
18
1
2
0,2609
39
2
7
0,0386
4
0
4
0,2500
30
1
14
0,0373
5
0
5
0,2000
52
3
4
0,0350
19
1
3
0,1739
31
1
15
0,0348
6
0
6
0,1667
40
2
8
0,0338
7
0
7
0,1429
41
2
9
0,0300
49
3
1
0,1402
53
3
5
0,0280
34
2
2
0,1351
42
2
10
0,0270
20
1
4
0,1304
43
2
11
0,0246
8
0
8
0,1250
54
3
6
0,0234
9
0
9
0,1111
44
2
12
0,0225
21
1
5
0,1043
45
2
13
0,0208
10
0
10
0,1000
55
3
7
0,0200
11
0
11
0,0909
46
2
14
0,0193
35
2
3
0,0901
47
2
15
0,0180
22
1
6
0,0870
56
3
8
0,0175
12
0
12
0,0833
57
3
9
0,0156
13
0
13
0,0769
58
3
10
0,0140
23
1
7
0,0745
59
3
11
0,0127
14
0
14
0,0714
60
3
12
0,0117
50
3
2
0,0701
61
3
13
0,0108
36
2
4
0,0676
62
3
14
0,0100
15
0
15
0,0667
63
3
15
0,0093
GsCfgCW,
GsCfgMod
[decimal]
EXPGsCfgCW,
EXPGsCfgMod
MANTGsCfgCW,
MANTGsCfgMod
[decimal]
[decimal]
0
0
16
32
Rsrel
[Ohm]
Table 13-3: Source Resistance of n-Channel Driver Transistor of TX1 and TX2 vs. GsConfCW or GsCfgMod
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13.3.2 FORMULA FOR THE SOURCE RESISTANCE
The relative resistance Rsrel can be calculated by
Rsrel =
1
MANTGsCfgCW ⋅ ( 77
40 )
EXPGsCfgCW
The relative resistance Rsrel during the modulation phase can be calculated using GsCfgMod, respectively.
13.3.3 CALCULATING THE EFFECTIVE SOURCE RESISTANCE
13.3.3.1 Wiring Resistance
Wiring and bonding add a constant offset to the driver resistance, that is relevant if TX1 and TX2 are
switched to low impedance. The additional resistance for TX1 can be set approximately to
Rs wire ,TX 1 ≈ 500mΩ
13.3.3.2 Effective Resistance
The source resistances of the driver transistors RsMaxP found in the Product Information Field (see chapter
6.2) are measured at production test with GsCfgCW set to 01hex. To get the driver resistance for a specific
value set in GsCfgMod the following formula may be used:
Rs x = (Rsref ,max, p − Rswire ,TX 1 )⋅ Rsrel + Rswire ,TX 1 .
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13.4
CL RC632
Pulse Width
The envelope carries the information of the data signal that shall be transmitted to the card done by coding
the data signal according to the Miller code. Furthermore, each pause of the Miller coded signal again is
coded as a pulse of certain length. The width of this pulse can be adjusted by means of the ModWidth
Register. The pulse length is calculated by
TPulse = 2
ModWidth + 1
fC
where fc = 13.56MHz.
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14
CL RC632
RECEIVER CIRCUITRY
14.1 General
The CL RC632 employs an integrated quadrature-demodulation circuit giving the possibility to detect an ISO
14443 compliant subcarrier signal applied to pin RX. The ISO14443-A sub-carrier signal is defined as a
Manchester coded ASK-modulated signal. The ISO14443-B sub-carrier signal is defined as an NRZ-L coded
BPSK modulated ISO14443-B sub-carrier signal.
The quadrature-demodulator uses two different clocks, Q- and I-clock, with a phase shift of 90° between
them. Both resulting sub-carrier signals are amplified, filtered and forwarded to a correlation circuitry. The
correlation results are evaluated, digitised and passed to the digital circuitry.
For all processing units various adjustments can be made to obtain optimum performance.
14.2 Block Diagram
Figure 14-1 shows the block diagram of the receiver circuitry. The receiving process includes several steps.
First the quadrature demodulation of the carrier signal of 13.56 MHz is done. To achieve an optimum in
performance an automatic clock Q calibration is recommended (see 14.3.1). The demodulated signal is
amplified by an adjustable amplifier. A correlation circuit calculates the degree of similarity between the
expected and the received signal. The bit phase register allows aligning the position of the correlation
intervals with the bit grid of the received signal. In the evaluation and digitizer circuitry the valid bits are
detected and the digital results are send to the FIFO register. Several tuning steps in this circuit are possible.
ClockQDelay[4:0]
ClockQCalib
ClockQ180°
BitPhase[7:0]
CollLevel[3:0]
Gain[1:0]
I to Q
Conversion
I-clock
MinLevel[3:0]
RcvClkSelI
RxWait[7:0]
clock
Q-clock
s_valid
RX
13.56 MHz
Demodulator
Correlation
Circuitry
Evaluation and Digitizer
Circuitry
s_data
s_coll
s_clock
VRxFollQ
VRxFollI
VRxAmpQ
VRxAmpI
VCorrNI
VCorrDI
VCorrNQ
VCorrDQ
VEvalR
VEvalL
to
TestAna
OutSel
Figure 14-1: Block Diagram of Receiver Circuitry
The user may observe the signal on its way through the receiver as shown in the block diagram above. One
signal at a time may be routed to pin AUX using the TestAnaSelect-Register as described in 21.3.
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14.3 Putting the Receiver into Operation
In general, the default settings programmed in the Start Up Initialisation File are suitable to use the CL
RC632 for data communication with MIFARE cards. However, in some environments specific user settings
may achieve better performance.
14.3.1 AUTOMATIC CLOCK-Q CALIBRATION
The quadrature demodulation concept of the receiver generates a phase signal I-clock and a 90°-shifted
quadrature signal Q-clock. To achieve an optimum demodulator performance, the Q- and the I-clock have to
have a difference in phase of 90°. After the reset phase of the CL RC632, a calibration procedure is done
automatically. It is possible to have an automatic calibration done at the ending of each Transceive
command. To do so, the ClkQCalib bit has to be configured to a value of 0.
Configuring this bit to a constant value of 1 disables all automatic calibrations except the one after the reset
sequence.
It is also possible to initiate one automatic calibration by software. This is done with a 0 to 1 transition of bit
ClkQCalib.
The details:
calibration impulse
from reset sequence
a rising edge initiates
a clock Q calibration
calibration impulse
from ending of
TRANSEIVE command
the ClkQCalib bit
Note: The duration of the automatic clock Q calibration takes 65 oscillator periods which is approx. 4,8µs.
The value of ClkQDelay is proportional to the phase shift between the Q- and the I-clock. The status flag
ClkQ180Deg shows, that the phase shift between the Q- and the I-clock is greater than 180°.
Notes:
•
The start-up configuration file enables an automatically Q-clock calibration after the reset.
•
While ClkQCalib is 1, no automatic calibration is done. Therefore leaving this bit 1 can be used to
permanently disable the automatic calibration.
•
It is possible to write data to ClkQDelay via the µ-Processor. The aim could be a disabling of the
automatic calibration and to pre-set the delay by software. But notice, that configuring the delay value by
software requires that bit ClkQCalib has already been set to 1 before and that a time interval of at least
4.8µs has elapsed since then. Each delay value must be written with the ClkQCalib bit set to 1. If
ClkQCalib is 0 the configured delay value will be overwritten by the next interval automatic calibration.
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14.3.2 AMPLIFIER
The demodulated signal has to be amplified with the variable amplifier to achieve the best performance. The
gain of the amplifiers can be adjusted by means of the register bits Gain [1:0]. The following gain factors are
selectable:
Register Setting
Gain Factor [dB]
(Simulation Results)
0
20
1
24
2
31
3
35
Table 14-1: Gain Factors for the Internal Amplifier
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14.3.3 CORRELATION CIRCUITRY
The correlation circuitry calculates the degree of matching between the received and an expected signal.
The output is a measure for the amplitude of the expected signal in the received signal. This is done for both,
the Q- and the I-channel. The correlator delivers two outputs for each of the two input channels, resulting in
four output signals in total.
For optimum performance, the correlation circuitry needs the phase information for the signal coming from
the card. This information has to be defined by the µ-Processor by means of the register BitPhase [7:0]. This
value defines the phase relation between the transmitter and receiver clock in multiples of tBitPhase =
1/13.56 MHz.
14.3.4 EVALUATION AND DIGITIZER CIRCUITRY
For each bit-half of the Manchester coded signal the correlation results are evaluated. The evaluation and
digitizer circuit decides from the signal strengths of both bit-halves, whether the current bit is valid, and, if it is
valid, the value of the bit itself or whether the current bit-interval contains a collision.
To do this in an optimum way, the user may select the following levels:
•
MinLevel: Defines the minimum signal strength of the stronger bit-half’s signal for being considered valid.
•
CollLevel: Defines the minimum signal strength that has to be exceeded by the weaker half-bit of the
Manchester-coded signal to generate a bit-collision. If the signal’s strength is below this value, a 1 and 0
can be determined unequivocally.
CollLevel defines the minimum signal strength relative to the amplitude of the stronger half-bit.
After transmission of data, the card is not allowed to send its response before a certain time period, called
frame guard time in the standard ISO14443. The length of this time period after transmission shall be set in
the RxWait-Register. The RxWait-Register defines when the receiver is switched on after data transmission
to the card in multiples of one bit-duration.
If register bit RcvClkSelI is set to 1, the I-clock is used to clock the correlator and evaluation circuits. If set to
0, the Q-clock is used.
Note: It is recommended to use the Q-clock.
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CL RC632
SERIAL SIGNAL SWITCH
15.1 General
Two main blocks are implemented in the CL RC632. A digital circuitry, comprising state machines, coder and
decoder logic and so on and an analog circuitry with the modulator and antenna drivers, receiver and
amplification circuitry. The interface between these two blocks can be configured in the way, that the
interfacing signals may be routed to the pins MFIN and MFOUT.
This topology supports, that the analog part of the one CL RC632 may be connected to the digital part of
another device.
The serial signal switch can be used to measure MIFARE® and ISO14443 as well I•CODE1 and ISO15693
related signals.
Note: The MFIN pin can only be accessed by 106 kbaud according to ISO14443A . The Manchester
with Subcarrier- and the Manchester signal can only be accessed at the MFOUT pin at 106 kbaud
according to ISO14443A.
15.2 Block Diagram
Figure 15-1 describes the serial signal switches. Three different switches are implemented in the serial signal
switch in order to use the CL RC632 in different configurations.
The serial signal switch may also be used during the design In phase or for test purposes to check the
transmitted and received data. Chapter 21.2 describes analog test signals as well as measurements at the
serial signal switch.
Note: The SL RC400 uses the name SIGOUT for the MFOUT pin. The CLRC 632 functionality includes the
0
0
Serial Data Out
Miller Coder
1 out of 256,
RZ or
1 out of 4
1
1
Envelope
2
MfIn
3
Modulator
Tx1
Driver
Tx2
2
Modulator
Source
(Part of)
Serial Data Processing
Manchester with Subcarrier
Manchester
4
5
1
Carrier
Demodulator
Rx
3
MfOut
Select
Transmitt NRZ
3
0
0
Subcarrier
Demodulator
1
Decoder
Source
Subcarrier
Demodulator
RFU
Envelope
3 Manchester
2
RFU
Manchester Out
2 Manchester with SubCarrier
6
Manchester
Decoder
2
Serial Data In
0
1 Internal
7
0
(Part of)
Analog Circuitry
1
0
Digital Test Signal
SignalTo
MfOut
Serial Signal Switch
MfIn
MfOut
Figure 15-1: Serial Signal Switch
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test possibilities for the SL RC 400 using the pin MFOUT.
The following chapters describe the relevant registers used to configure and control the serial signal switch.
15.3 Registers Relevant for the Serial Signal Switch
The flags DecoderSource define the input signal for the internal Manchester decoder in the following way:
Input Signal for Decoder
DecoderSource
0
Constant 0
1
Output of the analog part. This is the default configuration.
2
Direct connection to MFIN, expecting an 847.5 kHz sub-carrier signal modulated
by a Manchester coded signal.
3
Direct connection to MFIN, expecting a Manchester coded signal.
Table 15-1: Values for DecoderSource
ModulatorSource defines the signal that modulates the transmitted 13.56 MHz energy carrier. The modulated
signal drives the pins TX1 and TX2.
Input Signal for Modulator
ModulatorSource
0
Constant 0 (energy carrier off at pin TX1 and TX2).
1
Constant 1 (continuous energy carrier delivered at pin TX1 and TX2).
2
Modulation signal (envelope) from the internal coder. This is the default
configuration.
3
Direct connection to MFIN, expecting a Miller pulse coded signal.
Table 15-2: Values for ModulatorSource
MFOUTSelect selects the output signal, which is routed to the pin MFOUT.
Signal Routed to Pin MFOUT
MFOUTSelect
0
Constant Low
1
Constant High
2
Modulation signal (envelope) from the internal coder.
3
Serial data stream that is to be transmitted
(same as for MFOUTSelect = 2, but not coded by the selected pulse coder yet).
4
Output signal of the receiver circuit (card modulation signal regenerated
and delayed)
5
Output signal of the subcarrier demodulator (Manchester-coded card signal)
6
RFU
7
RFU
able 15-3: Values for MFOUTSelect
To use MFOUTSelect, the value of test signal control bit SignalToMFOUT has to be 0.
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MIFARE® : Usage of the MFIN and MFOUT
15.3.1 ACTIVE ANTENNA CONCEPT
The CL RC632 analog circuitry may be used via the pins MFIN and MFOUT. To do so, the following register
settings have to be made:
Register
Value
Signal
At CL RC632 Pin
ModulatorSource
3
Miller Pulse Coded
MFIN
MFOUTSelect
4
Manchester Coded with sub-carrier
MFOUT
DecoderSource
X
-
-
Table 15-4: Register setting to use the CL RC632 analog circuitry only
On the other hand, the CL RC632 digital circuitry may be used via the pins MFIN and MFOUT. To do so, the
following register settings have to be made:
Register
Value
Signal
At CL RC632 Pin
ModulatorSource
X
-
-
MFOUTSelect
2
Miller Pulse Coded
MFOUT
DecoderSource
2
Manchester Coded with sub-carrier
MFIN
Table 15-5: Register setting to use the CL RC632 digital circuitry only
Two CL RC632 devices configured in the above described way may be connected to each other via the pins
MFOUT and MFIN.
Note: The usage of the active antenna concept is only possible with a baudrate of 106kbaud
according to ISO14443A.
15.3.2 DRIVING TWO RF-PARTS
It is possible, to connect a ‘passive antenna’ to pins TX1, TX2 and RX (via the appropriate filter and matching
circuit) and at the same time an Active Antenna to the pins MFOUT and MFIN.
In this configuration, two RF-parts may be driven (one after another) by one µ-Processor.
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CL RC632
MIFARE® HIGHER BAUDRATES
The MIFARE® Classic system is specified with a fix Baud-rate of 106 kBaud for the communication on the
RF interface. ISO 14443 in the existing version also defines 106 kBaud at least for the initial phase of a
communication between PICC and PCD.
To speed up the communication between a terminal and a card to cover requirements for large data
transmission the CL RC632 supports the MIFARE® higher baudrates communication in combination with e.g.
a µController IC like the MIFARE® ProX.
Communication direction
CL RC632 based PCD
µC PICC supporting higher baudrates
µC PICC supporting higher baudrates
CL RC632 based PCD
Baudrates [kbaud]
106, 212, 424
106, 212, 424
Table 16-1 MIFARE® Higher Baudrates
The MIFARE® Higher Baudrates’ concept will be described in the Application Note: ‘MIFARE®
Implementation of Higher Baudrates’. This Application Note will cover also the integration a MIFARE® Higher
Baudrates communication concept in current applications.
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CL RC632
ISO14443 B
The international standard ISO14443 standard covers 2 communication schemes: the ISO14443-A and the
ISO14443-B.
The CL RC632 reader IC fully supports the ISO14443.
The following registers and flags cover the ISO 14443B communication scheme:
Flags
Register
Address
CharSpacing
TypeBFraming
0x17, bits 4-3
CoderRate
CoderControl
0x14, bits 5-3
EOFWidth
TypeBFraming
0x17, bit 5
FilterAmpDet
BPSKDemControl
0x1D, bit 4
Force100ASK
TxControl
0x11, bit 4
GSCfgCW
CWConductance
0x12, bits 5-0
GSCfgMod
ModConductance
0x13, bits 5-0
MinLevel
RxTreshhold
0x1C, bits 7-4
NoTxEOF
TypeBFraming
0x17, bit 6
NoTxSOF
TypeBFraming
0x17, bit 7
NoRxEGT
BPSKDemControl
0x1D, bit 6
NoRxEOF
BPSKDemControl
0x1D, bit 5
NoRxSOF
BPSKDemControl
0x1D, bit 7
RxCoding
DecoderControl
0x1A,bit 0
RxFraming
DecoderControl
0x1A,bits 4-3
SOFWidth
TypeBFraming
0x17,bits 1-0
SubCPulses
RxControl1
0x19, bits 7-5
TauB
BPSKDemControl
0x1D, bits 1-0
TauD
BPSKDemControl
0x1D, bits 3-2
TxCoding
CoderControl
0x14, bits 2-0
Table 17-1 Registers associated with ISO14443-B
As a reference documentation the international standard ISO14443 ‘Identification cards- Contactless
integrated circuit(s) cards- Proximity cards, part 1-4’ can be taken.
Note: Philips Semiconductors does not offer a basic function library to design in the ISO14443 B protocol.
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CL RC632
CL RC632 COMMAND SET
18.1 General Description
The CL RC632 behaviour is determined by an internal state machine capable to perform a certain set of
commands. The commands can be started by writing the according command-code to the CommandRegister.
Arguments and/or data necessary to process a command are mainly exchanged via the FIFO buffer.
18.2 General Behaviour
•
Each command, that needs a data stream (or data byte stream) as input will immediately process the
data it finds in the FIFO buffer.
•
Each command that needs a certain number of arguments will start processing only when it has received
the correct number of arguments via the FIFO buffer.
•
The FIFO buffer is not cleared automatically at command start. Therefore, it is also possible to write the
command arguments and/or the data bytes into the FIFO buffer and start the command afterwards.
•
Each command (except the StartUp-Command) may be interrupted by the µ-Processor by writing a new
command code into the Command-Register e.g.: the Idle-Command.
18.3 CL RC632 Commands Overview
Command
Code
Action
Arguments and Data
passed via FIFO
Returned Data
via FIFO
see
Chapter
-
-
18.3.2
-
-
18.3.3
Data Stream
-
18.4.1
-
Data Stream
18.4.2
Runs the Reset- and Initialisation
Phase.
StartUp
3Fhex
Idle
00hex
No action; cancels current command
execution.
Transmit
1Ahex
Transmits data from the FIFO buffer to
the card.
Note: This command can not be
activated by software, but only by a
Power-On or Hard Reset
Activates receiver circuitry.
Receive
16hex
Note: Before the receiver actually
starts, the state machine waits until the
time configured in the register RxWait
has passed.
Note: This command may be used for
test purposes only, since there is no
timing relation to the TransmitCommand.
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CL RC632 Commands Overview Continued
Command
Code
Action
Arguments and Data
passed via FIFO
Returned Data
via FIFO
see
Chapter
Data Stream
Data Stream
18.4.3
Start Address LSB
Start Address MSB
Data Byte Stream
-
18.6.1
Start Address LSB
Start Address MSB
Number of Data Bytes
Data Bytes
18.6.2
Start Address LSB
Start Address MSB
-
18.9.1
Byte0 (LSB)
Byte1
…
Byte 10
Byte11 (MSB)
-
18.9.2
Card’s Auth-Command
Card’s Block Address
Card’s Serial Number LSB
Card’s Serial Number Byte1
Card’s Serial Number Byte2
Card’s Serial Number MSB
-
18.9.3
-
-
18.9.4
Start Address LSB
Start Address MSB
-
18.7.1
Data Byte-Stream
-
18.7.2
Transmits data from FIFO buffer to the
card and activates automatically the
receiver after transmission.
Transceive
1Ehex
Note: Before the receiver actually
starts, the CL RC632 waits until the
time configured in the register RxWait
has passed.
Note: This command is the
combination of Transmit and Receive
WriteE2
01hex
ReadE2
03hex
Gets data from FIFO buffer and writes
it to the internal E²PROM.
Reads data from the internal E²PROM
and puts it into the FIFO buffer.
Note: Keys cannot be read back
LoadKeyE2
0Bhex
Copies a key from the E²PROM into
the key buffer.
Note: related to MIFARE® Classic
Security
Reads a key from the FIFO buffer and
puts it into the key buffer.
LoadKey
19hex
Note: The key has to be prepared in a
specific format
(refer to 6.4.1, key format)
Note: related to MIFARE® Classic
Security
Authent1
Authent2
0Chex
14hex
Performs the first part of the Crypto1
card authentication.
Note: related to MIFARE® Classic
Security
Performs the second part of the card
authentication using the Crypto1
algorithm.
Note: related to MIFARE® Classic
Security
LoadConfig
07hex
Reads data from E²PROM and
initialises the CL RC632 registers.
Activates the CRC-Coprocessor.
CalcCRC
12hex
Note: The result of the CRC
calculation can be read from the
registers CRCResultLSB and
CRCResultMSB
Table 18-1: CL RC632 Command Overview
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18.3.1 BASIC STATES
18.3.2 STARTUP COMMAND 3FHEX
Command
Action
Codehex
Arguments and Data
Returned Data
-
-
Runs the Reset- and Initialisation Phase
StartUp
3F
Note: This command can not be activated by
software, but only by a Power-On or Hard
Reset
The StartUp-Command runs the Reset- and Initialisation Phase. It does not need or return any data. It can
not be activated by the µ-Processor but is started automatically after one of the following events:
• Power On Reset caused by power up at Pin DVDD
• Power On Reset caused by power up at Pin AVDD
• Negative Edge at Pin RSTPD
The Reset-Phase defines certain register bits by an asynchronous reset. The Initialisation-Phase defines
certain registers with values taken from the E²PROM.
When the StartUp-Command has finished, the Idle-Command is entered automatically.
Notes:
•
The µ-Processor must not write to the CL RC632 as long as the CL RC632 is busy executing the
StartUp-Command. To ensure this, the µ-Processor shall poll for the Idle-Command to determine the
end of the Initialisation Phase (see also chapter 11.4).
•
As long as the StartUp-Command is active, only reading from page 0 of the CL RC632 is possible.
•
The StartUp-Command can not be interrupted by the µ-Processor.
18.3.3 IDLE COMMAND 00HEX
Command
Codehex
Action
Arguments and Data
Returned Data
Idle
00
No action, cancels current command execution
-
-
The Idle-Command switches the CL RC632 to its inactive state. In this Idle-state it waits for the next
command. It does not need or return any data. The device automatically enters the Idle-state when a
command finishes. In this case the CL RC632 simultaneously initiates an interrupt request by setting bit
IdleIRq. Triggered by the µ-Processor, the Idle-Command may be used to stop execution of all other
commands (except the StartUp Command). In that case no IdleIRq is generated.
Remark: Stopping a command with the Idle Command does not clear the FIFO buffer content.
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18.4 Commands for ISO14443 A Card Communication
The CL RC632 is a fully ISO 14443 and ISO15693 and I•CODE1 compliant reader IC. Therefore, the
command set of this IC allows more flexibility and more generalised commands compared to MIFARE or
I•CODE1 dedicated reader ICs. The following chapter describes the command set for card communication
for ISO14443 A related communication schemes.
18.4.1 TRANSMIT COMMAND 1AHEX
Command
Codehex
Transmit
1A
Action
Arguments and Data
Transmits data from FIFO buffer to the card
Data Stream
Returned Data
-
The Transmit-Command takes data from the FIFO buffer and forwards it to the transmitter. It does not return
any data. The Transmit-Command can only be started by the µ-Processor.
18.4.1.1 Working with the Transmit Command
To transmit data one of the following sequences may be used:
1. All data, that shall be transmitted to the card is written to the FIFO while the Idle-Command is active.
After that, the command code for the Transmit-Command is written to the Command-Register.
Note: This is possible for transmission of data with a length of up to 64 bytes.
2. The command code for the Transmit-Command is written to the Command-Register first. Since no data
is available in the FIFO, the command is only enabled but transmission is not triggered yet.
Data transmission really starts with the first data byte written to the FIFO. To generate a continuous data
stream on the RF-interface, the µ-Processor has to put the next data bytes to the FIFO in time.
Note: This allows transmission of data of any length but requires that data is available in the FIFO in
time.
3. A part of the data, that shall be transmitted to the card is written to the FIFO while the Idle-Command is
active. After that, the command code for the Transmit-Command is written to the Command-Register.
While the Transmit-Command is active, the µ-Processor may feed further data to the FIFO, causing the
transmitter to append it to the transmitted data stream.
Note: This enables transmission of data of any length but requires that data is available in the FIFO in
time.
When the transmitter requests the next data byte to keep the data stream on the RF-interface continuous but
the FIFO buffer is empty, the Transmit-Command automatically terminates. This causes the internal state
machine to change its state from Transmit to Idle.
If data transmission to the card is finished, the CL RC632 sets the flag TxIRq to signal it to the µ-Processor.
Remark: If the µ-Processor overwrites the transmit code in the Command-Register with the Idle-Command or
any other command, transmission stops immediately with the next clock cycle. This may produce output
signals that are not according to ISO14443-A.
18.4.1.2 RF-Channel Redundancy and Framing
Each transmitted ISO14443 frame consists of a SOF (start of frame) pattern, followed by the data stream
and is closed by an EOF (end of frame) pattern. These different phases of the transmit sequence may be
monitored by watching ModemState of PrimaryStatus-Register (see 18.4.4).
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Depending on the setting of bit TxCRCEn in the ChannelRedundancy-Register a CRC is calculated and
appended to the data stream. The CRC is calculated according the settings in the ChannelRedundancy
Register. Parity generation is handled according the settings in the ChannelRedundancy-Register (bits
ParityEn and ParityOdd).
18.4.1.3 Transmission of Bit Oriented Frames
The transmitter may be configured to send an incomplete last byte. To achieve this TxLastBits has to be set
to a value unequal zero. This is shown in the figure below.
TxLastBits = 0
SOF
Bit0
Bit7
P
Bit0
TxLastBits = 7
SOF
Bit0
Bit7
P
Bit0
TxLastBits = 1
SOF
Bit0
Bit7
P
Bit0
Bit7
Bit6
P
EOF
EOF
EOF
Figure 18-1: Transmitting Bit Oriented Frames
The figure shows the data stream if ParityEn is set in ChannelRedundancy-Register. All fully transmitted
bytes are followed by a parity check bit, but the incomplete byte is not followed by a parity check bit.
After transmission, TxLastBits is cleared automatically.
Note: If TxLastBits is not equal to zero CRC generation has to be disabled. This is done by clearing the bit
TxCRCEn in the ChannelRedundancy Register.
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18.4.1.4 Transmission of Frames with more than 64 Bytes
To generate frames with more than 64 bytes, the µ-Processor has to write data into the FIFO buffer while the
Transmit Command is active. The state machine checks the FIFO status when it starts transmitting the last
bit of the actual data stream (the check time is marked below with arrows).
TxLastBits
TxLastBits = 0
FIFO Length
0x01
0x00
FIFO empty
TxData
Bit7 Bit0
Bit7 Bit0
Bit7
Check FIFO empty
Accept Further Data
Figure 18-2: Timing for Transmitting Byte Oriented Frames
As long as the internal signal ‘Accept Further Data’ is 1 further data may be loaded to the FIFO. The CL
RC632 appends this data to the data stream transmitted via the RF-interface.
If the internal signal ‘Accept Further Data’ is 0 the transmission will terminate. All data written into the FIFO
buffer after ‘Accept Further Data’ went 0 will not be transmitted anymore, but remain in the FIFO buffer.
Remark: If parity generation is enabled (ParityEn bit is 1) the parity bit is the last bit to be transmitted. This
delays the signal ‘Accept Further Data’ for one bit duration.
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If TxLastBits is unequal zero the last byte is not transmitted completely, but only the number of bits set in
TxLastBits are transmitted (starting with the least significant bit).
Thus, the internal state machine has to check the FIFO status at an earlier point in time (shown in the figure
below).
N_WR (FIFO Data)
TxLastBits
TxLastBits = 4
FIFO Length
0x01
0x00
0x01
0x00
FIFO empty
TxData
Bit4
Bit7 Bit0
Bit3 Bit4
Bit7 Bit0
Bit3
Check FIFO empty
Accept Further Data
Figure 18-3: Timing for Transmitting Bit Oriented Frames
Since TxLastBits = 4 in this example, transmission stops after Bit 3 is transmitted. If configured, the frame is
completed with an EOF.
The figure above also shows a write access to the FIFOData Register right before the FIFO’s status is
checked. This leads to ‘FIFO empty’ going to 0 again and therefore ‘Accept Further Data’ stays active. The
new byte written is transmitted via the RF-interface.
‘Accept Further Data’ is changed only by the ‘Check FIFO empty’ function. This function verifies ‘FIFO empty’
one bit duration before the last expected bit transmission.
Frame Definition
Verification at:
8 Bit with Parity
8th Bit
8 Bit without Parity
7th Bit
x Bit without Parity
(x-1)th Bit
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18.4.2 RECEIVE COMMAND 16HEX
Command
Codehex
Receive
16
Action
Activates Receiver Circuitry
Arguments and Data
Returned Data
-
Data Stream
The Receive-Command activates the receiver circuitry. All data received from the RF interface is returned via
the FIFO buffer. The Receive-Command can be started either by the µ-Processor or automatically during
execution of the Transceive-Command.
Note: This command may be used for test purposes only, since there is no timing relation to the TransmitCommand.
18.4.2.1 Working with the Receive Command
After starting the Receive Command the internal state machine decrements the value set in the RxWaitRegister with every bit-clock. From 3 down to 1 the analog receiver circuitry is prepared and activated. When
the counter reaches 0, the receiver starts monitoring the incoming signal at the RF-interface. If the signal
strength reaches a level higher than the value set in the MinLevel-Register it finally starts decoding. The
decoder stops, if no more signal can be detected on the receiver input pin Rx. The decoder indicates
termination of operation by setting bit RxIRq.
The different phases of the receive sequence may be monitored by watching ModemState of the
PrimaryStatus-Register (see 18.4.4).
Note: Since the counter values from 3 to 0 are necessary to initialise the analog receiver circuitry the
minimum value for RxWait is 3.
18.4.2.2 RF-Channel Redundancy and Framing
The decoder expects a SOF pattern at the beginning of each data stream. If a SOF is detected, it activates
the serial to parallel converter and gathers the incoming data bits. Every completed byte is forwarded to the
FIFO. If an EOF pattern is detected or the signal strength falls below MinLevel set in the RxThreshold
Register, the receiver and the decoder stop, the Idle-Command is entered and an appropriate response for
the µ-Processor is generated (interrupt request activated, status flags set).
If bit RxCRCEn in the ChannelRedundancy Register is set a CRC block is expected. The CRC block may be
one byte or two bytes according to bit CRC8 in the ChannelRedundancy Register.
Remark: The received CRC block is not forwarded to the FIFO buffer if it is correct. This is realised by
shifting the incoming data bytes through an internal buffer of either one or two bytes (depending on the
defined CRC). The CRC block remains in this internal buffer. As a consequence all data bytes are available
in the FIFO buffer one or two bytes delayed.
If the CRC fails all received bytes are forwarded to the FIFO buffer (including the faulty CRC itself).
If ParityEn is set in the ChannelRedundancy Register a parity bit is expected after each byte. If bit ParityOdd
is set to 1, the expected parity is an odd parity, otherwise an even parity is expected.
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18.4.2.3 Collision Detection
If more than one card is within the RF-field during the card selection phase, they will respond simultaneously.
The CL RC632 supports the algorithm defined in ISO14443-A to resolve data-collisions of cards serial
numbers by doing the so-called anti-collision procedure. The basis for this is the ability to detect bitcollisions.
Bit-collision detection is supported by the used bit-coding scheme, namely the Manchester-coding. If in the
first and second half-bit of a bit a sub-carrier modulation is detected, instead of forwarding a 1 or a 0 a bit
collision will be signalled. To distinguish a 1 or 0-bit from a bit-collision, the CL RC632 uses the setting of
CollLevel. If the amplitude of the half-bit with smaller amplitude is larger than defined by CollLevel, the CL
RC632 indicates a bit-collision.
If a bit-collision is detected, the error flag CollErr is set. If a bit-collision is detected in a parity bit, the flag
ParityErr is set indicating a parity error.
Independent from the detected collision the receiver continues receiving the incoming data stream. In case of
a bit-collision, the decoder forwards 1 at the collision position.
Note: As an exception, if bit ZeroAfterColl is set, all bits received after the first bit-collision are forced to zero,
regardless whether a bit-collision or an unequivocal state has been detected. This feature eases for the
software to carry out the anti-collision procedure defined in ISO14443-A.
When the first bit collision in a frame is detected, the bit position of this collision is stored in the CollPos
Register.
The collision position follows the table below:
Collision in Bit
Value of CollPos
SOF
0
LSBit of LSByte
1
…
…
MSBit of LSByte
8
LSBit of second Byte
9
…
…
MSBit of second Byte
16
LSBit of third Byte
17
…
…
Table 18-2: Returned Values for Bit Collision Positions
The parity bits are not counted in CollPos, since a bit-collision in a parity bit per definition succeeds a bitcollision in the data bits. If a collision is detected in the SOF a frame error is reported and no data is
forwarded to the FIFO buffer. In this case the receiver continues to monitor the incoming signal and
generates the correct notifications to the µ-Processor when the ending of the faulty input stream is detected.
This helps the µ-Processor to determine the time when it is allowed next to send anything to the card.
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CL RC632
18.4.2.4 Receiving Bit Oriented Frames
The receiver can handle byte streams with incomplete bytes, resulting in bit oriented frames. To support this,
the following values may be used:
•
•
RxAlign selects a bit offset for the first incoming byte, e.g. if RxAlign is set to 3, the first 5 bits received
are forwarded to the FIFO buffer. Further bits are packed into bytes and forwarded. After reception,
RxAlign is cleared automatically.
If RxAlign is set to zero, all incoming bits are packed into one byte.
RxLastBits returns the number of bits valid in the last received byte, e.g. if RxLastBits evaluates to 5 at
the end of the receiving command, the 5 least significant bits are valid.
RxlastBits evaluates to zero if the last byte is complete.
RxLastBits is valid only, if no frame error is indicated by the flag FrameErr. If RxAlign is set to a value other
than zero and also ParityEn is active, the first parity bit is not checked but ignored.
18.4.2.5 Communication Errors
The following table shows which event causes the setting of error flags:
Cause
Bit, that is set
Received data did not start with a SOF pattern.
FramingErr
The CRC block is not equal the expected value.
CRCErr
The received data is shorter than the CRC block.
CRCErr
The parity bit is not equal the expected value (e. g. a bit collision occurs when a parity is expected)
ParErr
A collision is detected.
CollErr
Table 18-3: Communication Error Table
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18.4.3 TRANSCEIVE COMMAND 1EHEX
Command
Codehex
Transceive
1E
Action
Arguments and Data
Transmits data from FIFO buffer to the card and Data Stream
then activates automatically the receiver
Returned Data
Data Stream
The Transceive-Command first executes the Transmit-Command (see 18.4.1) and then automatically starts
the Receive-Command (see 18.4.2). All data that shall be transmitted is forwarded via the FIFO buffer and all
data received is returned via the FIFO buffer. The Transceive-Command can be started only by the
µ-Processor.
Note: To adjust the timing relation between transmitting and receiving, the RxWait Register is used to define
the time delay from the last bit transmitted until the receiver is activated. Furthermore, the BitPhase Register
determines the phase-shift between the transmitter and the receiver clock.
18.4.4 STATES OF THE CARD COMMUNICATION
The actual state of the transmitter and receiver state machine can be fetched from ModemState in the
PrimaryStatus Register.
The assignment of ModemState to the internal action is shown in the following table:
ModemState
Name of State
Description
000
Idle
001
TxSOF
Transmitting the ‘Start Of Frame’ Pattern
010
TxData
Transmitting data from the FIFO buffer (or redundancy check bits)
011
TxEOF
Transmitting the ‘End Of Frame’ Pattern
Neither the transmitter nor the receiver is in operation,
since none of them is started or the transmitter has not got input data
GoToRx1
Intermediate state passed, when receiver starts
GoToRx2
Intermediate state passed, when receiver finishes
101
PrepareRx
Waiting until the time period selected in the RxWait Register has expired
110
AwaitingRx
Receiver activated; Awaiting an input signal at pin Rx
111
Receiving
100
Receiving data
Table 18-4: Meaning of ModemState
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18.4.5 STATE DIAGRAM FOR THE CARD COMMUNICATION
Command =
(Transmit OR
Receive OR
Transceive)
FI
C FO
(T omm no
t
ra
ns an em
m d = pty
it
AN
OR
D
Tr
an
sc
ei
ve
)
Idle
(000)
Co
m
Re ma
ce nd
i ve =
GoToRx1
(100)
TxSOF
(001)
next bit clock
SOF transmitted
TxData
(010)
PrepareRx
(101)
RxWaitCounter
=0
Data transmitted
TxEOF
(011)
RxMultiple = 1
AwaitingRx
(110)
Signal Strength >
MinLevel
EOF transmitted AND
Command = Transceive
Receiving
(111)
EOF transmitted AND
Command = Transmit
Frame Received
GoToRx2
(100)
End of Receive frame AND
RxMultiple = 0
Set
CommandRegister = Idle
(000)
Figure 18-4: State Diagram: Card Communication
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18.5 Commands for I•CODE1 and ISO15693 Label Communication
The CL RC632 is a fully ISO 14443 and ISO15693 and I•CODE1 compliant reader IC. Therefore, the
command set of this IC allows more flexibility and more generalised commands compared to MIFARE or
I•CODE1 dedicated reader ICs. The following chapter describes the command set for card communication
for I•CODE1 and ISO15693 related communication schemes in general.
18.5.1 TRANSMIT COMMAND 1AHEX
Command
Codehex
Transmit
1A
Action
Arguments and Data
Transmits data from FIFO buffer to the label
Data Stream
Returned Data
-
The Transmit-Command takes data from the FIFO buffer and forwards it to the transmitter. It does not return
any data. The Transmit-Command can only be started by the µ-Processor.
18.5.1.1 Working with the Transmit Command
To transmit data one of the following sequences may be used:
1. All data, that shall be transmitted to the label is written to the FIFO while the Idle-Command is active.
After that, the command code for the Transmit-Command is written to the Command-Register.
Note: This is possible for transmission of data with a length of up to 64 bytes.
2. The command code for the Transmit-Command is written to Command-Register first. Since no data is
available in the FIFO, the command is only enabled but transmission is not triggered yet.
Data transmission really starts with the first data byte written to the FIFO. To generate a continuous data
stream on the RF-interface, the µ-Processor has to put the next data bytes to the FIFO in time.
Note: This allows transmission of data of any length but requires that data is available in the FIFO in
time.
3. A part of the data, that shall be transmit to the label is written to the FIFO while the Idle-Command is
active. After that, the command code for the Transmit-Command is written to the Command-Register.
While the Transmit-Command is active, the µ-Processor may feed further data to the FIFO, causing the
transmitter to append it to the transmitted data stream.
Note: This enables transmission of data of any length but requires that data is available in the FIFO in
time.
When the transmitter requests the next data byte to keep the data stream on the RF-interface continuous but
the FIFO buffer is empty, the Transmit-Command automatically terminates. This causes the internal state
machine to change its state from Transmit to Idle.
If data transmission to the label is finished, the CL RC632 sets the flag TxIRq to signal it to the µ-Processor.
Remark: If the µ-Processor overwrites the transmit code in the Command-Register with the Idle-Command or
any other command, transmission stops immediately with the next clock cycle. This may produce output
signals that are not according to the standard ISO 15693 or the I•CODE1 protocol.
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18.5.1.2 RF-Channel Redundancy and Framing
Each transmitted ISO 15693 frame consists of a SOF (start of frame) pattern, followed by the data stream
and is closed by an EOF (end of frame) pattern. All I•CODE1 command frames consists of a START PULSE
followed by the data stream. The I•CODE1 commands have a fix length and no EOF is needed. These
different phases of the transmit sequence may be monitored by watching ModemState of PrimaryStatusRegister (see 18.4.4).
Depending on the setting of bit TxCRCEn in the ChannelRedundancy-Register a CRC is calculated and
appended to the data stream. The CRC is calculated according the settings in the ChannelRedundancy
Register.
18.5.1.3 Transmission of Frames with more than 64 Bytes
To generate frames with more than 64 bytes, the µ-Processor has to write data into the FIFO buffer while the
Transmit Command is active. The state machine checks the FIFO status when it starts transmitting the last
bit of the actual data stream (the check time is marked below with arrows).
TxLastBits
TxLastBits = 0
FIFO Length
0x01
0x00
FIFO empty
TxData
Bit7 Bit0
Bit7 Bit0
Bit7
Check FIFO empty
Accept Further Data
Figure 18-5: Timing for Transmitting Byte Oriented Frames
As long as the internal signal ‘Accept Further Data’ is 1 further data may be loaded into the FIFO. The CL
RC632 appends this data to the data stream transmitted via the RF-interface.
If the internal signal ‘Accept Further Data’ is 0 the transmission will terminate. All data written into the FIFO
buffer after ‘Accept Further Data’ went 0 will not be transmitted anymore, but remain in the FIFO buffer.
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18.5.2 RECEIVE COMMAND 16HEX
Command
Codehex
Receive
16
Action
Activates Receiver Circuitry
Arguments and Data
Returned Data
-
Data Stream
The Receive-Command activates the receiver circuitry. All data received from the RF interface is returned via
the FIFO buffer. The Receive-Command can be started either by the µ-Processor or automatically during
execution of the Transceive-Command.
Note: This command may be used for test purposes only, since there is no timing relation to the TransmitCommand.
18.5.2.1 Working with the Receive Command
After starting the Receive Command the internal state machine decrements the value set in the RxWaitRegister with every bit-clock. From 3 down to 1 the analog receiver circuitry is prepared and activated. When
the counter reaches 0, the receiver starts monitoring the incoming signal at the RF-interface. If the signal
strength reaches a level higher than the value set in the MinLevel-Register it finally starts decoding. The
decoder stops, if no more signal can be detected on the receiver input pin Rx. The decoder indicates
termination of operation by setting bit RxIRq.
The different phases of the receive sequence may be monitored by watching ModemState of the
PrimaryStatus-Register (see 18.4.4).
Note: Since the counter values from 3 to 0 are necessary to initialise the analog receiver circuitry the
minimum value for RxWait is 3.
18.5.2.2 RF-Channel Redundancy and Framing
For ISO 15693 the decoder expects a SOF pattern at the beginning of each data stream. If a SOF is
detected, it activates the serial to parallel converter and gathers the incoming data bits. For I•CODE1 the
decoder do not expects a SOF pattern at the beginning of each data stream. It activates the serial to parallel
converter with the first received bit of the data. Every completed byte is forwarded to the FIFO. If an EOF
pattern (ISO15693) is detected or the signal strength falls below MinLevel set in the RxThreshold Register,
the receiver and the decoder stop, the Idle-Command is entered and an appropriate response for the µProcessor is generated (interrupt request activated, status flags set).
If bit RxCRCEn in the ChannelRedundancy Register is set a CRC block is expected. The CRC block may be
one byte or two bytes according to bit CRC8 in the ChannelRedundancy Register.
Remark: The received CRC block is not forwarded to the FIFO buffer if it is correct. This is realised by
shifting the incoming data bytes through an internal buffer of either one or two bytes (depending on the
defined CRC). The CRC block remains in this internal buffer. As a consequence all data bytes are available
in the FIFO buffer one or two bytes delayed.
If the CRC fails all received bytes are forwarded to the FIFO buffer (including the faulty CRC itself).
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18.5.2.3 Collision Detection
If more than one label is within the RF-field during the label selection phase, they will respond
simultaneously. The CL RC632 supports the algorithm defined in ISO 15693 as well as the I•CODE1 anticollision algorithm to resolve data-collisions of label serial numbers by doing the so-called anti-collision
procedure. The basis for this is the ability to detect bit-collisions.
Bit-collision detection is supported by the used bit-coding scheme, namely the Manchester-coding. If in the
first and second half-bit of a bit a sub-carrier modulation is detected, instead of forwarding a 1 or a 0 a bit
collision will be signalled. To distinguish a 1 or 0-bit from a bit-collision, the CL RC632 uses the setting of
CollLevel. If the amplitude of the half-bit with smaller amplitude is larger than defined by CollLevel, the CL
RC632 indicates a bit-collision.
If a bit-collision is detected, the error flag CollErr is set.
Independent from the detected collision the receiver continues receiving the incoming data stream. In case of
a bit-collision, the decoder forwards 1 at the collision position.
Note: As an exception, if bit ZeroAfterColl is set, all bits received after the first bit-collision are forced to zero,
regardless whether a bit-collision or an unequivocal state has been detected. This feature eases for the
software to carry out the anti-collision procedure defined in ISO 15693.
When the first bit collision in a frame is detected, the bit position of this collision is stored in the CollPos
Register.
The collision position follows the table below:
Collision in Bit
Value of CollPos
SOF
0
LSBit of LSByte
1
…
…
MSBit of LSByte
8
LSBit of second Byte
9
…
…
MSBit of second Byte
16
LSBit of third Byte
17
…
…
Table 18-5: Returned Values for Bit Collision Positions
If a collision is detected in the SOF a frame error is reported and no data is forwarded to the FIFO buffer. In
this case the receiver continues to monitor the incoming signal and generates the correct notifications to the
µ-Processor when the ending of the faulty input stream is detected. This helps the µ-Processor to determine
the time when it is allowed next to send anything to the label.
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18.5.2.4 Communication Errors
The following table shows which event causes the setting of error flags:
Cause
Bit, that is set
Received data did not start with a SOF pattern.
FramingErr
The CRC block is not equal the expected value.
CRCErr
The received data is shorter than the CRC block.
CRCErr
A collision is detected.
CollErr
Table 18-6: Communication Error Table
18.5.3 TRANSCEIVE COMMAND 1EHEX
Command
Codehex
Transceive
1E
Action
Arguments and Data
Transmits data from FIFO buffer to the label
and then activates automatically the receiver
Data Stream
Returned Data
Data Stream
The Transceive-Command first executes the Transmit-Command (see 18.4.1) and then automatically starts
the Receive-Command (see 18.4.2). All data that shall be transmitted is forwarded via the FIFO buffer and all
data received is returned via the FIFO buffer. The Transceive-Command can be started only by the
µ-Processor.
Note: To adjust the timing relation between transmitting and receiving, the RxWait Register is used to define
the time delay from the last bit transmitted until the receiver is activated. Furthermore, the BitPhase Register
determines the phase-shift between the transmitter and the receiver clock.
18.5.4 STATES OF THE LABEL COMMUNICATION
The actual state of the transmitter and receiver state machine can be fetched from ModemState in the
PrimaryStatus Register.
The assignment of ModemState to the internal action is shown in the following table:
ModemState
Name of State
Description
000
Idle
001
TxSOF
Transmitting the ‘Start Of Frame’ Pattern
010
TxData
Transmitting data from the FIFO buffer (or redundancy check bits)
011
TxEOF
Transmitting the ‘End Of Frame’ Pattern
Neither the transmitter nor the receiver is in operation,
since none of them is started or the transmitter has not got input data
GoToRx1
Intermediate state passed, when receiver starts
GoToRx2
Intermediate state passed, when receiver finishes
101
PrepareRx
Waiting until the time period selected in the RxWait Register has expired
110
AwaitingRx
Receiver activated; Awaiting an input signal at pin Rx
111
Receiving
100
Receiving data
Table 18-7: Meaning of ModemState
18.5.5 STATE DIAGRAM FOR THE LABEL COMMUNICATION
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Command =
(Transmit OR
Receive OR
Transceive)
FI
C FO
(T omm no
t
ra
ns a n em
m d = pty
it
AN
O
R
D
Tr
an
sc
ei
ve
)
Idle
(000)
Co
m
Re ma
ce nd
iv e =
GoToRx1
(100)
TxSOF
(001)
next bit clock
SOF transmitted
TxData
(010)
PrepareRx
(101)
RxMultiple = 1 &&
TimeSlotPeriod > 0 &&
TimeSlot Trigger &&
Data in FIFO
RxWaitCounter
=0
Data transmitted
TxEOF
(011)
AwaitingRx
(110)
Signal Strength >
MinLevel
EOF transmitted AND
Command = Transceive
Receiving
(111)
EOF transmitted AND
Command = Transmit
Frame Received
End of Receive frame &&
RxMultiple = 0 &&
TimeSlotPeriod = 0
Set
CommandRegister = Idle
(000)
GoToRx2
(100)
RxMultiple = 0 &&
TimeSlotPeriod > 0 &&
TimeSlot Trigger &&
Data in FIFO
Idle
(000)
Preparing to
send the Quit
value
Remark: I•CODE1 do not have a SOF and a EOF
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18.6 Commands to Access the E²PROM
18.6.1 WRITEE2 COMMAND 01HEX
18.6.1.1 Overview
Command
Codehex
WriteE2
01
Arguments and
Data passed via
FIFO
Action
Get data from FIFO buffer and write it to the E²PROM
Start Address LSB
Start Address MSB
Data Byte Stream
Returned
Data via
FIFO
-
The WriteE2-Command interprets the first two bytes in the FIFO buffer as E²PROM starting byte-address.
Any further bytes are interpreted as data bytes and are programmed into the E²PROM, starting from the
given E²PROM starting byte-address. This command does not return any data.
The WriteE2-Command can only be started by the µ-Processor. It will not stop automatically but has to be
stopped explicitly by the µ-Processor by issuing the Idle-Command.
18.6.1.2 Programming Process
One byte up to 16 byte can be programmed into the EEPROM in one programming cycle. The time needed
will be in any case about 5.8ms.
The state machine copies all data bytes prepared in the FIFO buffer to the E²PROM input buffer. The internal
E²PROM input buffer is 16 byte long, which is equal the block size of the E²PROM. A programming cycle is
started either if the last position of the E²PROM input buffer is written or if the last byte of the FIFO buffer has
been fetched.
As long as there are unprocessed bytes in the FIFO buffer or the E²PROM programming cycle still is in
progress, the flag E2Ready is 0. If all data from the FIFO buffer are programmed into the E²PROM, the flag
E2Ready is set to1. Together with the rising edge of E2Ready the interrupt request flag TxIRq indicates a 1.
This may be used to generate an interrupt when programming of all data is finished.
After the E2Ready bit is set to 1, the WriteE2-Command may be stopped by the µ-Processor by issuing the
Idle-Command.
Note: During the E2PROM programming indicated by E2Ready = 0 the WRITEE2 command cannot be
stopped by any other command.
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18.6.1.3 Timing Diagram
The following diagram shows programming of 5 bytes into the E²PROM:
tprg,del
NWrite
Data
WriteE2
command active
E²PROM
Programming
Write Adr
E2 LSB
Adr
MSB
Byte0
Byte1
Byte2
Byte3
Idle
Cmd
Byte4
tprog
tprog
Programming Byte0
Programming Byte1, Byte2, and Byte3
tprog
Programming Byte4
E2Ready
TxIRq
Figure 18-7: Timing Diagram for E²PROM programming
Explanation: It is assumed, that the CL RC632 finds and reads Byte 0 before the µ-Processor is able to write
Byte 1 (tprog,del = 300 ns). This causes the CL RC632 to start the programming cycle, which needs about
tprog = 5.8 ms. In the meantime the µ-Processor stores Byte 1 to Byte 4 to the FIFO buffer. Assuming, that the
E²PROM starting byte-address is e.g. 16Chex then Byte 0 is stored exactly there. The CL RC632 copies the
following data bytes into the E²PROM input buffer. Copying Byte 3, it detects, that this data byte has to be
programmed at the E²PROM byte-address 16Fhex. Since this is the end of the memory block, the CL RC632
automatically starts a programming cycle. In the next turn, Byte 4 will be programmed at the E²PROM byteaddress 170hex. Since this is the last data byte, the flags (E2Ready and TxIRq) that indicate the end of the
E²PROM programming activity will be set.
Although all data has been programmed into the E2PROM, the CL RC632 stays in the WriteE2-Command.
Writing further data to the FIFO would lead to further E²PROM programming, continuing at the E²PROM
byte-address 171hex. The command is stopped using the Idle-Command.
18.6.1.4 Error Flags for the WriteE2 Command
Programming is inhibited for the E²PROM blocks 0 (E²PROM’s byte-address 00hex to 0Fhex). Programming to
these addresses sets the flag AccessErr. No programming cycle is started. Addresses above 1FFhex are
taken modulo 200hex (for the E²PROM memory organisation, refer to chapter 6.).
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18.6.2 READE2 COMMAND 03HEX
18.6.2.1 Overview
Command
Codehex
ReadE2
03
Action
Arguments
Reads data from E²PROM and puts it to the
FIFO buffer
Start Address LSB
Start Address MSB
Number of Data Bytes
Returned Data
Data Bytes
The ReadE2-Command interprets the first two bytes found in the FIFO buffer as E²PROM starting
byte-address. The next byte specifies the number of data bytes that shall be returned.
When all three argument-bytes are available in the FIFO buffer, the specified number of data bytes is copied
from the E²PROM into the FIFO buffer, starting from the given E²PROM starting byte-address.
The ReadE2-Command can be triggered only by the µ-Processor. It stops automatically when all data has
been delivered.
18.6.2.2 Error Flags for the ReadE2 Command
Reading is inhibited for the E²PROM blocks 8hex up to 1Fhex ( key memory area). Reading from these
addresses sets the flag AccessErr to 1. Addresses above 1FFhex are taken modulo 200hex (for the E²PROM
memory organisation, refer to chapter 6).
18.7 Diverse Commands
18.7.1 LOADCONFIG COMMAND 07HEX
18.7.1.1 Overview
Command
Codehex
LoadConfig
07
Action
Arguments and Data
Reads data from E²PROM and initialises the
registers
Start Address LSB
Start Address MSB
Returned Data
-
The LoadConfig-Command interprets the first two bytes found in the FIFO buffer as E²PROM starting
byte-address. When the two argument-bytes are available in the FIFO buffer, 32 bytes from the E²PROM are
copied into the CL RC632 control and configuration registers, starting at the given E²PROM starting
byte-address. The LoadConfig-Command can only be started by the µ-Processor. It stops automatically
when all relevant registers have been copied.
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18.7.1.2 Register Assignment
The 32 bytes of E²PROM content, beginning with the E²PROM starting byte-address, is written to the CL
RC632 register 10hex up to register 2Fhex (for the E²PROM memory organisation see also 6).
Note: The procedure for the register assignment is the same as it is for the Start Up Initialisation (see 11.3).
The difference is, that the E²PROM starting byte-address for the Start Up Initialisation is fixed to 10hex (Block
1, Byte 0). With the LoadConfig-Command it can be chosen.
18.7.1.3 Relevant Error Flags for the LoadConfig-Command
Valid E²PROM starting byte-addresses are in the range from 10hex up to 60hex.
Copying from block 8hex up to 1Fhex (keys) is inhibited. Reading from these addresses sets the flag AccessErr
to 1. Addresses above 1FFhex are taken modulo 200hex (for the E²PROM memory organisation refer to
chapter 6).
18.7.2 CALCCRC COMMAND 12HEX
18.7.2.1 Overview
Command
Codehex
CalcCRC
12
Action
Arguments and Data
Activates the CRC-Coprocessor
Data Byte-Stream
Returned Data
-
The CalcCRC-Command takes all data from the FIFO buffer as input bytes for the CRC-Coprocessor. All
data stored in the FIFO buffer before the command is started will be processed. This command does not
return any data via the FIFO buffer, but the content of the CRC-register can be read back via the
CRCResultLSB-register and the CRCResultMSB-register. The CalcCRC-Command can only be started by
the µ-Processor. It does not stop automatically but has to be stopped explicitly by the µ-Processor with the
Idle-Command. If the FIFO buffer is empty, the CalcCRC-Command waits for further input from the FIFO
buffer.
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18.7.2.2 CRC-Coprocessor Settings
For the CRC-Coprocessor the following parameters may be configured:
Parameter
Value
Bit
Register
CRC Register Length
8 Bit or 16 Bit CRC
CRC8
ChannelRedundancy
CRC Algorithm
Algorithm according ISO14443-A or according
ISO/IEC3309
CRC3309
ChannelRedundancy
CRC Preset Value
Any
CRCPresetLSB,
CRCPresetMSB
CRCPresetLSB,
CRCPresetMSB
Table 18-8: CRC-Coprocessor Parameters
The CRC polynomial for the 8-bit CRC is fixed to x + x + x + x + 1 .
8
4
16
The CRC polynomial for the 16-bit CRC is fixed to x
3
2
+ x12 + x 5 + 1 .
18.7.2.3 Status Flags of the CRC-Coprocessor
The status flag CRCReady indicates, that the CRC-Coprocessor has finished processing of all data bytes
found in the FIFO buffer. With the CRCReady flag setting to 1, an interrupt is requested with TxIRq being set.
This supports interrupt driven usage of the CRC-Coprocessor.
When CRCReady and TxIRq are set to 1, respectively, the content of the CRCResultLSB- and
CRCResultMSB-register and the flag CRCErr is valid.
The CRCResultLSB- and CRCResultMSB-register hold the content of the CRC register, the CRCErr flag
indicates CRC validity for the processed data.
18.8 Error Handling during Command Execution
If any error is detected during command execution, this is shown by setting the status flag Err in the
PrimaryStatus Register. For information about the cause of the error, the µ-Processor may evaluate the
status flags in the ErrorFlag Register.
Error Flag of the ErrorFlag Register
Related to Command
KeyErr
LoadKeyE2, LoadKey
AccessError
WriteE2, ReadE2, LoadConfig
FIFOOvl
No specific commands
CRCErr
Receive, Transceive, CalcCRC
FramingErr
Receive, Transceive
ParityErr
Receive, Transceive
CollErr
Receive, Transceive
Table 18-9: Error Flags Overview
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18.9 MIFARE® Classic Security Commands
18.9.1 LOADKEYE2 COMMAND 0BHEX
18.9.1.1 Overview
Command
Codehex
LoadKeyE2
0B
Action
Arguments and Data
Reads a key from the E²PROM and puts it
into the internal key buffer
Start Address LSB
Start Address MSB
Returned Data
-
The LoadKeyE2-Command interprets the first two bytes found in the FIFO buffer as E²PROM starting
byte-address. The E²PROM bytes starting from the given starting byte-address are interpreted as key, stored
in the correct key format as described in chapter 6.4.1. When all two argument-bytes are available in the
FIFO buffer, the command execution starts. The LoadKeyE2-Command can be started only by the µProcessor. It stops automatically after having copied the key from the E²PROM into the key buffer.
18.9.1.2 Relevant Error Flags for the LoadKeyE2-Command
If the key format is not correct (see chapter 6.4.1) an undefined value is copied into the key buffer and the
flag KeyError is set.
18.9.2 LOADKEY COMMAND 19HEX
18.9.2.1 Overview
Command
Codehex
LoadKey
19
Action
Arguments and Data
Reads a key from the FIFO buffer and puts it
into the key buffer
Byte0 (LSB)
Byte1
…
Byte10
Byte11 (MSB)
Returned Data
-
The LoadKey-Command interprets the first twelve bytes it finds in the FIFO buffer as key, stored in the
correct key format as described in chapter 6.4.1.
When the twelve argument-bytes are available in the FIFO buffer they are checked and, if valid, are copied
into the key buffer (see also 19.2).
The LoadKey-Command can only be started by the µ-Processor. It stops automatically after having copied
the key from the FIFO buffer into the key buffer.
18.9.2.2 Relevant Error Flags for the LoadKey-Command
All bytes requested are copied from the FIFO buffer to the key buffer. If the key format is not correct (see
chapter 6.4.1) an undefined value is copied into the key buffer and the flag KeyError is set.
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18.9.3 AUTHENT1 COMMAND 0CHEX
18.9.3.1 Overview
Command
Authent1
Action
Codehex
0C
Arguments and Data
Performs the first part of the Crypto1
(MIFARE Classic) card authentication
Card Auth-Command
Card Block Address
Card Serial Number LSB
Card Serial Number Byte1
Card Serial Number Byte2
Card Serial Number MSB
Returned Data
-
The Authent1-Command is a special Transceive-Command: it takes six argument bytes which are sent to the
card. The card’s response is not forwarded to the µ-Processor, but is used to check the authenticity of the
card and to prove authenticity of the CL RC632 to the card.
The Authent1-Command can be triggered only by the µ-Processor. The sequence of states for this command
is the same as for the Transceive-Command (see 18.4.3).
18.9.4 AUTHENT2 COMMAND 14HEX
18.9.4.1 Overview
Command
Codehex
Authent2
14
Action
Performs the second part of the card
authentication using the Crypto1 algorithm.
Arguments and Data
Returned Data
-
-
The Authent2-Command is a special Transceive-Command. It does not need any argument byte but all
necessary data which has to be sent to the card is assembled by the CL RC632 itself. The card response is
not forwarded to the µ-Processor, but is used to check the authenticity of the card and to prove authenticity
of the CL RC632 to the card.
The Authent2-Command can only be started by the µ-Processor. The logical sequence for this command is
the same as for the Transceive-Command (see 18.4.3).
18.9.4.2 Effect of the Authent2-Command
If the Authent2-Command was successful, authenticity of card and CL RC632 is proved. In this case, the
control bit Crypto1On is set automatically. When bit Crypto1On is set, all further card communication is done
encrypted, using the Crypto1 security algorithm. If the Authent2-Command fails, bit Crypto1On is cleared.
Note: The flag Crypto1On can not be set by the µ-Processor but only through a successfully performed
Authent2-Command. The µ-Processor may clear the bit Crypto1On to continue with plain card
communication.
Note: The Authent2-Command has to be executed immediately after a successful Authent1-Command (see
18.9.3). Furthermore, the keys stored in the key buffer and those on the card have to match.
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19
CL RC632
MIFARE CLASSIC AUTHENTICATION AND CRYPTO1
19.1 General
The security algorithm implemented in MIFARE Classic products is called Crypto1. It is based on a
proprietary stream cipher with a key length of 48 bits. To access data of a MIFARE Classic card, the
knowledge of the according key is necessary. For successful card authentication and subsequent access to
the card’s data stored in the EEPROM, the correct key has to be available in the CL RC632. After a card is
selected as defined in ISO14443A the user may continue with the MIFARE Classic protocol. In this case it
is mandatory to perform a card authentication. The Crypto1 authentication is a 3-pass authentication. This
procedure is done automatically with the execution of Authent1- (see 18.9.3) and the Authent2-Commands
(see 18.9.4). During the card authentication procedure, the security algorithm is initialised. The
communication with a MIFARE Classic card following a successful authentication is encrypted.
19.2 Crypto1 Key Handling
During the authentication command the CL RC632 reads the key from the internal key buffer. The key is
always taken from the key buffer. Therefore, the commands for Crypto1 authentication do not require
addressing of a key. The user has to ensure, that the correct key is prepared in the key buffer before the
card authentication is triggered.
The key buffer can be loaded
•
•
from the E²PROM with the LoadKeyE2-Command (see 18.9.1)
directly from the µ-Processor via the FIFO-Buffer with the LoadKey-Command (see 18.9.2)
This is shown in the following figure:
WriteE2
From the
µController
E²PROM:
Keys
FIFO
LoadKey
LoadKeyE2
Key Buffer
During
Authent1
Serial Data Stream In
(Plain)
Crypto1 Module
Serial Data Stream Out
(Encrypted)
.
Figure 19-1: Key Handling: Block Diagram
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19.3 Performing MIFARE Classic Authentication
To enable authentication of MIFARE Classic cards the Crypto1 security algorithm is implemented. To obtain
valid authentication, the correct key has to be available in the key buffer of the CL RC632.
Step 1: Load the internal key buffer by means of the LoadKeyE2- (see 18.9.1) or the LoadKey-Command
(see 18.9.2).
Step 2: Start the Authent1-Command (see 18.9.3). When finished, check the error flags to obtain the
status of the command execution.
Step 3: Start the Authent2-Command (see 18.9.4). When finished, check the error flags and bit
Crypto1On to obtain the status of the command execution.
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CL RC632
TYPICAL APPLICATION
20.1 Circuit Diagram
The figure below shows a typical application, where the antenna is directly connected to the CL RC632:
DVDD
DVDD
Reset
AVDD
RSTPD
AVDD
µProcessor
Data Bus
IRQ
TVDD
TX1
µ-Processor Bus
Control Lines
TVDD
C1
L0
C0
C2a
C0
C2b
TVSS
IRQ
CL RC632
TX2
L0
C1
C3
RX
R1
DVSS
OSCIN
OSCOUT AVSS
VMID
R2
C4
100 nF
13.56 MHz
15 pF
15 pF
Figure 20-1: Circuit Diagram for Application Example: Direct Matched Antenna
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20.2 Circuit Description
The matching circuit consists of an EMC low pass filter (L0 and C0), a matching circuitry (C1 and C2), and a
receiving circuit (R1, R2, C3 and C4), and the antenna itself.
For more detailed information about designing and tuning an antenna please refer to the Application Note
’MIFARE and I CODE MICORE reader IC family; Directly Matched Antenna Design’ and
‘MIFARE (14443A) 13,56 MHz RFID Proximity Antennas’.
20.2.1 EMC LOW PASS FILTER
The MIFARE system operates at a frequency of 13.56 MHz. This frequency is generated by a quartz
oscillator to clock the CL RC632 and is also the basis for driving the antenna with the 13.56 MHz energy
carrier. This will not only cause emitted power at 13.56 MHz but will also emit power at higher harmonics.
The international EMC regulations define the amplitude of the emitted power in a broad frequency range.
Thus, an appropriate filtering of the output signal is necessary to fulfil these regulations.
A multi-layer board it is recommended to implement a low pass filter as shown in the circuit above. The low
pass filter consists of the components L0 and C0. The recommended values are given in the above
mentioned application notes.
Note: To achieve best performance all components shall have at least the quality of the recommended ones.
Note: The layout has a major influence on the overall performance of the filter.
20.2.2 ANTENNA MATCHING
Due to the impedance transformation of the given low pass filter, the antenna coil has to be matched to a
certain impedance. The matching elements C1 and C2 can be estimated and have to be fine tuned
depending on the design of the antenna coil.
The correct impedance matching is important to provide the optimum performance. The overall Quality factor
has to be considered to guarantee a proper ISO14443 communication scheme. Environmental influences
have to considered as well as common EMC design rules.
For details refer to the above mentioned application notes.
Note: Do not exceed the current limits ITVDD, otherwise the chip might be destroyed.
Note: The overall 13.56MHz RFID proximity antenna design with the CL RC632 chip is straight forward and
doesn’t require a special RF-know how. However, all relevant parameters have to be considered to
guarantee an overall optimum performance together with international EMC compliance.
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20.2.3 RECEIVING CIRCUIT
The internal receiving concept of the CL RC632 makes use of both side-bands of the sub-carrier load
modulation of the card response. No external filtering is required.
It is recommended to use the internally generated VMID potential as the input potential of pin RX. This DC
voltage level of VMID has to be coupled to the Rx-pin via R2. To provide a stable DC reference voltage a
capacitance C4 has to be connected between VMID and ground.
Considering the (AC) voltage limits at the Rx-pin the AC voltage divider of R1 + C3 and R2 has to be
designed. Depending on the antenna coil design and the impedance matching the voltage at the antenna coil
varies from antenna design to antenna design. Therefore the recommended way to design the receiving
circuit is to use the given values for R1, R2, and C3 from the above mentioned application note, and adjust
the voltage at the Rx-pin by varying R1 within the given limits.
Note: R2 is AC-wise connected to ground (via C4).
20.2.4 ANTENNA COIL
The precise calculation of the antenna coils’ inductance is not practicable but the inductance can be
estimated using the following formula. We recommend designing an antenna either with a circular or
rectangular shape.
  l 
 1,8
L1 [nH ] = 2 ⋅ l 1 [cm ] ⋅  ln 1  − K  N1
  D1 

l1 ............... Length of one turn of the conductor loop
D1 ............. Diameter of the wire or width of the PCB conductor respectively
K............... Antenna Shape Factor (K = 1,07 for circular antennas and K = 1,47 for square antennas)
N1 ............. Number of turns
ln .............. Natural logarithm function
The actual values of the antenna inductance, resistance, and capacitance at 13.56 MHz depend on
various parameters like:
•
•
•
•
•
antenna construction (Type of PCB)
thickness of conductor
distance between the windings
shielding layer
metal or ferrite in the near environment
Therefore a measurement of those parameters under real life conditions, or at least a rough measurement
and a tuning procedure is recommended to guarantee the optimum performance. For details refer to the
above mentioned application notes.
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21
CL RC632
TEST SIGNALS
21.1 General
The CL RC632 allows different kind of signal measurements. These measurements can be used to check
the internally generated and received signals using the possibilities of the serial signal switch as described in
chapter 15.
Furthermore, with the CL RC632 the user may select internal analogue signals to measure them at pin AUX
and internal digital signals to observe them on pin MFOUT by register selections. These measurements can
be helpful during the design-in phase to optimise the receiver’s behaviour or for test purpose.
21.2 Measurements Using the Serial Signal Switch
Using the serial signal switch at pin MFOUT the user may observe data send to the card or data received
from the card. The following tables give an overview of the different signals available.
SignalToMFOUT
MFOUTSelect
Signal routed to MFOUT pin
0
0
LOW
0
1
HIGH
0
2
Envelope
0
3
Transmit NRZ
0
4
Manchester with Subcarrier
0
5
Manchester
0
6
RFU
0
7
RFU
1
X
Digital Test signal
Table 21-1 Signal routed to MFOUT pin
Note: The routing of the Manchester and the Manchester with Subcarrier signal to the MFOUT is only
possible at 106 kbaud according to ISO14443A.
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21.2.1 TX-CONTROL
The following plot shows as an example an ISO14443 A related communication.
The signal measured at MFOUT using the serial signal switch to control the data sent to the card .Setting the
flag MFOUTSelect to 3 data sent to the card is shown NRZ coded. MFOUTSelect set to 2 shows the Miller
coded signal.
The RFOut signal is measured directly on the antenna showing the pulse shape of the RF signal. For detail
information concerning the pulse of the RF signal please refer to the application note ‘MIFARE® Design of
MF RC 500 Matching Circuits and Antennas’
MFOUTSelect
=3
Serial data
Stream
2V/Div.
MFOUTSelect
=2
Serial data
Stream
2V/Div.
RFout
1V/Div.
Figure 21 TX Control Signals
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21.2.2 RX-CONTROL
The following plot shows as an example an ISO14443 A related communication.
The following plot shows the beginning of a cards answer to a request signal. The signal RF shows the RF
voltage measured directly on the antenna so that the cards load modulation is visible. MFOUTSelect set to 4
shows the Manchester decoded signal with subcarrier. MFOUTSelect set to 5 shows the Manchester
decoded signal.
RF
1V/Div.
MFOUTSelect
=4
Manchester
with
Subcarrier
2V/Div.
MFOUTSelect
=5
Manchester
2V/Div.
Figure 22 RX Control Signals
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21.3 Analog Test-Signals
The analog test signals may be routed to pin AUX by selecting them with the register bits TestAnaOutSel.
Value
Signal Name
Description
0
Vmid
1
Vbandgap
Internal reference voltage generated by the band gap.
2
VRxFollI
Output signal from the demodulator using the I-clock.
3
VRxFollQ
Output signal from the demodulator using the Q-clock.
4
VRxAmpI
I-channel subcarrier signal amplified and filtered.
5
VRxAmpQ
Q-channel subcarrier signal amplified and filtered.
6
VCorrNI
Output signal of N-channel correlator fed by the I-channel subcarrier
signal.
7
VCorrNQ
Output signal of N-channel correlator fed by the Q-channel subcarrier
signal.
8
VCorrDI
Output signal of D-channel correlator fed by the I-channel subcarrier
signal.
9
VCorrDQ
Output signal of D-channel correlator fed by the Q-channel subcarrier
signal.
A
VEvalL
Evaluation signal from the left half bit.
B
VEvalR
Evaluation signal from the right half bit.
C
VTemp
Temperature voltage derived from band gap.
D
rfu
Reserved for future use
E
rfu
Reserved for future use
F
rfu
Reserved for future use
Voltage at internal node Vmid
Table 21-2: Analog Test Signal Selection
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21.4 Digital Test-Signals
Digital test signals may be routed to pin MFOUT by setting bit SignalToMFOUT to 1. A digital test signal may
be selected via the register bits TestDigiSignalSel in Register TestDigiSelect.
The signals selected by a certain TestDigiSignalSel setting is shown in the table below:
TestDigiSignalSel
Signal Name
Description
F4hex
s_data
Data received from the card.
E4hex
s_valid
Shows with 1, that the signals s_data and s_coll are valid.
D4hex
s_coll
Shows with 1, that a collision has been detected in the current bit.
C4hex
s_clock
Internal serial clock: during transmission, this is the coder-clock and during
reception this is the receiver clock.
B5hex
rd_sync
Internal synchronised read signal (derived from the parallel µ-Processor
interface).
A5hex
wr_sync
Internal synchronised write signal (derived from the parallel µ-Processor
interface).
96hex
int_clock
Internal 13.56 MHz clock.
83hex
BPSK_out
BPSK signal output
E2hex
BPSK_sig
BPSK signal’s amplitude detected
00hex
no test signal
output as defined by MFOUTSelect are routed to pin MFOUT.
Table 21-3: Digital Test Signal Selection
If no test signals are used, the value for the TestDigiSelect-Register shall be 00hex.
Note: All other values of TestDigiSignalSel are for production test purposes only.
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21.5 Examples of ISO14443A Analog- and Digital Test Signals
Fig. 22 shows a MIFARE Classic Card’s answer to a request command using the Qclock receiving path.
RX –Reference is given to show the Manchester modulated signal at the RX pin. This signal is demodulated
and amplified in the receiver circuitry VRXAmpQ shows the amplified side band signal having used the QClock for demodulation. The signals VCorrDQ and VCorrNQ generated in the correlation circuitry are
evaluated and digitised in the evaluation and digitizer circuitry. VEvalR and VEvalL show the evaluation
signal of the right and left half bit. Finally, the digital test-signal S_data shows the received data which is
send to the internal digital circuit and S_valid indicates that the received data stream is valid.
Figure 23. Receiving path Q-Clock
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21.6 Examples of I•CODE1 Analog- and Digital Test Signals
Fig. 17 shows the answer of an I•CODE1 Label IC to a unselected read command using the Qclock
receiving path.
RX –Reference is given to show the Manchester modulated signal at the RX pin. This signal is demodulated
and amplified in the receiver circuitry VRXAmpQ shows the amplified side band signal having used the QClock for demodulation. The signals VCorrDQ and VCorrNQ generated in the correlation circuitry are
evaluated and digitised in the evaluation and digitizer circuitry. VEvalR and VEvalL show the evaluation
signal of the right and left half bit. Finally, the digital test-signal S_data shows the received data which is
send to the internal digital circuit and S_valid indicates that the received data stream is valid.
Receiving path Q-Clock
VrxAmpQ
VcorrDQ
VcorrNQ
VevalR
VevalL
Sdata
50µsec/Dev.
SValid
500µsec/Dev.
Figure 24. Receiving path Q-Clock
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CL RC632
ELECTRICAL CHARACTERISTICS
22.1 Absolute Maximum Ratings
SYMBOL
PARAMETER
MIN
MAX
UNIT
Ambient or Storage Temperature Range
-40
+150
°C
DC Supply Voltages
-0.5
6
V
Vin,abs
Absolute voltage on any digital pin to DVSS
-0.5
DVDD + 0.5
V
VRX,abs
Absolute voltage on RX pin to AVSS
-0.5
AVDD + 0.5
V
Tamb,abs
DVDD
AVDD
TVDD
Table 22-1: Absolute Maximum Ratings
22.2 Operating Condition Range
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
-25
+25
+85
°C
3.0
3.3
3.6
V
4.5
5.0
5.5
V
Tamb
Ambient Temperature
-
DVDD
Digital Supply Voltage
DVSS = AVSS = TVSS = 0V
AVDD
Analog Supply Voltage
DVSS = AVSS = TVSS = 0V
4.5
5.0
5.5
V
TVDD
Transmitter Supply Voltage
DVSS = AVSS = TVSS = 0V
3.0
5.0
5.5
V
TYP
MAX
UNIT
Idle Command
6
9
mA
Stand By Mode
3
5
mA
Soft Power Down Mode
800
1000
µA
Hard Power Down Mode
1
10
µA
Idle Command, Receiver On
25
40
mA
Idle Command, Receiver Off
8
12
mA
Stand By Mode
6.5
9
mA
Soft Power Down Mode
1
10
µA
Hard Power Down Mode
1
10
µA
150
mA
Table 22-2: Operating Condition Range
22.3 Current Consumption
SYMBOL
IDVDD
IAVDD
PARAMETER
Digital Supply Current
Analog Supply Current
CONDITIONS
MIN
Continuous Wave
ITVDD
Transmitter Supply Current
TX1 and TX2 unconnected
TX1RFEn, TX2RFEn = 1
4.5
6
mA
TX1 and TX2 unconnected
TX1RFEn, TX2RFEn = 0
65
130
µA
Table 22-3: Current Consumption
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22.4 Pin Characteristics
22.4.1 INPUT PIN CHARACTERISTICS
Pins D0 to D7, A0, and A1 have TTL input characteristics and behave as defined in the following table.
SYMBOL
PARAMETER
ILeak
Input Leakage Current
VT
Threshold
CONDITIONS
MIN
MAX
UNIT
-1.0
+1.0
µA
CMOS: DVDD < 3.6 V
0.35 DVDD
0.65 DVDD
V
TTL: 4.5 < DVDD
0.8
2.0
V
Table 22-4: Standard Input Pin Characteristics
The digital input pins NCS, NWR, NRD, ALE, A2, and MFIN have Schmitt-Trigger characteristics, and
behave as defined in the following table.
SYMBOL
PARAMETER
CONDITIONS
ILeak
Input Leakage Current
VT+
Positive-Going Threshold
VT-
Negative-Going Threshold
MIN
MAX
UNIT
-1.0
+1.0
µA
TTL: 4.5 < DVDD
1.4
2.0
V
CMOS: DVDD < 3.6 V
0.65 DVDD
0.75 DVDD
V
TTL: 4.5 < DVDD
0.8
1.3
V
CMOS: DVDD < 3.6 V
0.25 DVDD
0.4 DVDD
V
Table 22-5: Schmitt-Trigger Input Pin Characteristics
Pin RSTPD has Schmitt-Trigger CMOS characteristics. In addition, it is internally filtered with an RC-lowpass filter, which causes a relevant propagation delay for the reset signal:
SYMBOL
PARAMETER
CONDITIONS
ILeak
Input Leakage Current
VT+
Positive-Going Threshold
VT-
Negative-Going Threshold
tRSTPD,p
Propagation Delay
MIN
MAX
UNIT
-1.0
+1.0
µA
CMOS: DVDD < 3.6 V
0.65 DVDD
0.75 DVDD
V
CMOS: DVDD < 3.6 V
0.25 DVDD
0.4 DVDD
V
20
µs
MAX
UNIT
15
pF
Table 22-6: RSTPD Input Pin Characteristics
The analog input pin RX has the following input capacitance:
SYMBOL
PARAMETER
CRX
Input Capacitance
CONDITIONS
MIN
Table 22-7: RX Input Capacitance
The analog input pin RX has the following input voltage range:
SYMBOL
PARAMETER
VIN,RX
Dynamical Voltage input range
CONDITIONS
MIN
MAX
UNIT
AVDD=5V, T=25°C
1,1V
4,4
V
Table 22-8: RX Input voltage range
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22.4.2 DIGITAL OUTPUT PIN CHARACTERISTICS
Pins D0 to D7, MFOUT and IRQ have CMOS output characteristics and behave as defined in the following
table.
SYMBOL
PARAMETER
VOH
Output Voltage HIGH
VOL
Output Voltage LOW
IO
Output Current source or sink
CONDITIONS
MIN
TYP
MAX
UNIT
DVDD = 5 V, IOH = -1 mA
2.4
4.9
V
DVDD = 5 V, IOH = -10 mA
2.4
4.2
V
DVDD = 5 V, IOL = 1 mA
25
400
mV
DVDD = 5 V, IOL = 10 mA
250
400
mV
10
mA
DVDD = 5 V
Table 22-8: Digital Output Pin Characteristics
Note: IRQ pin may also be configured as open collector. In that case the values for VOH do not apply.
22.4.3 ANTENNA DRIVER OUTPUT PIN CHARACTERISTICS
The source conductance of the antenna driver pins TX1 and TX2 for driving the HIGH level can be
configured via GsCfgCW in the CwConductance Register, while their source conductance for driving the
LOW level is constant.
For the default configuration, the output characteristic is specified below:
SYMBOL
PARAMETER
VOH
Output Voltage HIGH
VOL
Output Voltage LOW
ITX
Transmitter Output Current
CONDITIONS
MIN
TYP
MAX
UNIT
TVDD = 5.0 V, IOL = 20 mA
4.97
V
TVDD = 5.0 V, IOL = 100 mA
4.85
V
TVDD = 5.0 V, IOL = 20 mA
30
mV
TVDD = 5.0 V, IOL = 100 mA
150
mV
Continuous Wave
200
mApeak
Table 22-9: Antenna Driver Output Pin Characteristics
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22.5 AC Electrical Characteristics
22.5.1 AC SYMBOLS
Each timing symbol has five characters. The first character is always 't' for time. The other characters
indicate the name of a signal or the logic state of that signal (depending on position):
Designation:
Signal:
Designation:
Logic Level:
A
address
H
HIGH
D
data
L
LOW
W
NWR or nWait
Z
high impedance
R
NRD or R/NW or nWrite
X
any level or data
L
ALE or AS
V
any valid signal or data
C
NCS
N
NSS
S
NDS or nDStrb and nAStrb,
SCK
Example: tAVLL = time for address valid to ALE low
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22.5.2 AC OPERATING SPECIFICATION
22.5.2.1 Bus Timing for Separated Read/Write Strobe
SYMBOL
PARAMETER
MIN
MAX
UNIT
tLHLL
ALE pulse width
20
tAVLL
Multiplexed Address Bus valid to ALE low (Address Set Up Time)
15
ns
tLLAX
Multiplexed Address Bus valid after ALE low (Address Hold Time)
8
ns
ns
tLLWL
ALE low to NWR, NRD low
15
ns
tCLWL
NCS low to NRD, NWR low
0
ns
tWHCH
NRD, NWR high to NCS high
0
tRLDV
NRD low to DATA valid
ns
65
ns
tRHDZ
NRD high to DATA high impedance
20
ns
tWLDV
NWR low to DATA valid
35
ns
tWHDX
DATA hold after NWR high (Data Hold Time)
8
ns
tWLWH
NRD, NWR pulse width
65
ns
tAVWL
Separated Address Bus valid to NRD, NWR low (Set Up Time)
30
ns
tWHAX
Separated Address Bus valid after NWR high (Hold Time)
8
ns
tWHWL
period between sequenced read / write accesses
150
ns
Table 22-10: Timing Specification for Separated Read/Write Strobe
tLHLL
ALE
tCLWL
tWHCH
NCS
tLLWL
tWHWL
tWLWH
tWHWL
NWR
NRD
tAVLL
D0 ... D7
tWLDV
tRLDV
tLLAX
Multiplexed Addressbus
tWHDX
tRHDZ
D0 ... D7
A0 ... A2
tAVWL
tWHAX
Separated Addressbus
A0 ... A2
A0 ... A2
Figure 22-1: Timing Diagram for Separated Read/Write Strobe
Note: For separated address and data bus the signal ALE is not relevant and the multiplexed addresses on the data bus
don’t care.
For the multiplexed address and data bus the address lines A0 to A2 have to be connected as described in 4.3.
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Multiple Protocol Contactless Reader IC
CL RC632
22.5.2.2 Bus Timing for Common Read/Write Strobe
SYMBOL
tLHLL
tAVLL
tLLAX
tLLSL
tCLSL
tSHCH
tSLDV,R
tSHDZ
tSLDV,W
tSHDX
tSHRX
tSLSH
tAVSL
tSHAX
tSHSL
tRVSL
PARAMETER
AS pulse width
Multiplexed Address Bus valid to AS low (Address Set Up Time)
Multiplexed Address Bus valid after AS low (Address Hold Time)
AS low to NDS low
NCS low to NDS low
NDS high to NCS high
NDS low to DATA valid (for read cycle)
NDS low to DATA high impedance (read cycle)
NDS low to DATA valid (for write cycle)
DATA hold after NDS high (write cycle, Hold Time)
R/NW hold after NDS high
NDS pulse width
Separated Address Bus valid to NDS low (Hold Time)
Separated Address Bus valid after NDS high (Set Up Time)
period between sequenced read/write accesses
R/NW valid to NDS low
MIN
20
15
8
15
0
0
MAX
65
20
35
8
8
65
30
8
150
8
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Table 22-11: Timing Specification for Common Read/Write Strobe
tLHLL
ALE
tCLSL
tSHCH
NCS
tRVSL
tSHRX
R/NW
tLLSL
tSHSL
tSLSH
tSHSL
NDS
tAVLL
D0 ... D7
tSLDV,R
tSLDV,W
tLLAX
Multiplexed Addressbus
tSHDX
tSHDZ
D0 ... D7
A0 ... A2
tAVSL
tSHAX
Separated Addressbus
A0 ... A2
A0 ... A2
Figure 22-2: Timing Diagram for Common Read/Write Strobe
Note: For separated address and data bus the signal ALE is not relevant and the multiplexed addresses on the data bus don’t
care. For the multiplexed address and data bus the address lines A0 to A2 have to be connected as described in 4.3.
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Multiple Protocol Contactless Reader IC
CL RC632
22.5.2.3 Bus Timing for EPP
SYMBOL
PARAMETER
MIN
tLLLH
nAStrb pulse width
20
MAX
UNIT
tAVLH
Multiplexed Address Bus valid to nAStrb high (Set Up Time)
15
ns
tLHAX
Multiplexed Address Bus valid after nAStrb high (Hold Time)
8
ns
ns
tCLSL
NCS low to nDStrb low
0
ns
tSHCH
nDStrb high to NCS high
0
ns
tSLDV,R
nDStrb low to DATA valid (read cycle)
65
ns
tSHDZ
nDStrb low to DATA high impedance (read cycle)
20
ns
35
ns
tSLDV,W
nDStrb low to DATA valid (write cycle, Set up Time)
tSHDX
DATA hold after nDStrb high (write cycle, Hold Time)
tSHRX
nWrite hold after nDStrb high
8
ns
tSLSH
nDStrb pulse width
65
ns
8
8
ns
tRVSL
nWrite valid to nDStrb low
tSLWH
nDStrb low to nWait high
75
ns
ns
tSHWL
nDStrb high to nWait low
75
ns
Table 22-12: Timing Specification for Common Read/Write Strobe
tCLSL
tSHCH
NCS
tRVSL
tSHRX
nWrite
tSLSH
nDStrb
nAStrb
tSLDV,R
tSLDV,W
tSHDX
tSHDZ
D0 ... D7
A0 ... A7
D0 ... D7
tSLWH
tSHWL
nWait
Figure 22-3: Timing Diagram for Common Read/Write Strobe
Remark: The figure does not distinguish between the Address Write Cycle and a Data Write Cycle. Take in
account, that timings for the Address Write and Data Write Cycle are different. For the EPP-Mode the
address lines A0 to A2 have to be connected as described in 4.3.
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Multiple Protocol Contactless Reader IC
CL RC632
22.5.2.4 Timing for SPI compatible interface
SYMBOL
tSCKL
tSCKH
tSHDX
tDXSH
tSLDX
tSLNH
PARAMETER
SCK low pulse width
SCK high pulse width
SCK high to data changes
data changes to SCK high
SCK low to data changes
SCK low to NSS high
MIN
100
100
20
20
MAX
UNIT
ns
ns
ns
ns
ns
ns
15
20
Table 22-13 Timing Specification for SPI
tSCKL
tSCKH
tSCKL
SCK
tSLDX
tDXSH
tSHDX
tDXSH
MOSI
MSB
LSB
MISO
MSB
LSB
tSLNH
NSS
Figure 22 Timing Diagram for SPI
Note: To send more than bytes in one datastream the NSS signal has to low all the time.
To send more than one datastream NSS has to be set to HIGH level in between the datastreams.
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Multiple Protocol Contactless Reader IC
CL RC632
22.5.3 CLOCK FREQUENCY
The clock input is pin 1, OSCIN.
PARAMETER
SYMBOL
Clock Frequency (checked by the clock filter)
fOSCIN
Duty Cycle of Clock Frequency
dFEC
Jitter of Clock Edges
tjitter
MIN
TYP
MAX
13.56
40
50
UNIT
MHz
60
%
10
ps
The clock applied to the CL RC632 acts as time basis for the coder and decoder of the synchronous system.
Therefore stability of clock frequency is an important factor for proper performance. To obtain highest
performance, clock jitter shall be as small as possible. This is best achieved using the internal oscillator
buffer with the recommended circuitry (see 12).
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Multiple Protocol Contactless Reader IC
23
CL RC632
E²PROM CHARACTERISTICS
The E²PROM has a size of 32x16x8 = 4.096 bit.
SYMBOL
PARAMETER
CONDITIONS
MIN
MAX
UNIT
tEEEndurance
Data Endurance
tEERetention
Data Retention
tEEErase
Erase Time
2.9
ms
tEEWrite
Write Time
2.9
ms
100.000
erase/write cycles
10
years
Tamb ≤ 55°C
Table 23-1:E²PROM Characteristics
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24
CL RC632
ESD SPECIFICATION
To ensure the usage of the CL RC632 during production the ICs is specified as described in the following
table.
TEST
NAME
CONDITIONS
MAX
ESDH
ESD Susceptibility (Human
body model)
1500 Ω, 100 pF
1 kV
ESDM
ESD Susceptibility (Machine
model)
0.75 µH, 200 pF
100 V
Table 24-1. ESD Specification
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Multiple Protocol Contactless Reader IC
25
CL RC632
PACKAGE OUTLINES
25.1 SO32
SO32: plastic small outline package; 32 leads; body width 7.5 mm
SOT287-1
D
E
A
X
c
y
HE
v M A
Z
17
32
Q
A2
pin 1 index
A
(A3 )
A1
θ
Lp
L
16
1
bp
e
0
detail X
wM
5
10 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
A
UNIT max. A1
A2
A3
bp
c
D(1) E(1)
e
HE
L
mm
2.65
0.3
0.1
2.45
2.25
0.25
inches 0.10 0.012 0.096 0.01
0.004 0.086
0.49
0.36
0.27
0.18
20.7
20.3
0.02 0.011 0.81
0.01 0.007 0.80
7.6
7.4
10.65
1.27 10.00
1.4
Lp
Q
v
w
y
Z (1)
1.1
0.4
1.2
1.0
0.25
0.25
0.1
0.95
0.55
0.30
0.419
0.043 0.047
0.01
0.055
0.050
0.29
0.394
0.016 0.039
θ
8o
0o
0.037
0.01 0.004
0.022
Note
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
OUTLINE
VERSION
REFERENCES
IEC
JEDEC
EIAJ
EUROPEAN
PROJECTION
ISSUE DATE
95-01-25
97-05-22
SOT287-1
Figure 255-1: Outline and Dimension of CL RC632 in SO32
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Definitions
Data sheet status
Objective specification
This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be
published later.
Product specification
This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress
above one or more of the limiting values may cause permanent damage to the device. These are stress
ratings only and operation of the device at these or at any other conditions above those given in the
Characteristics section of the specification is not implied. Exposure to limiting values for extended
periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
26
DISCLAIMERS
26.1 Life support applications
These products are not designed for use in life support appliances, devices, or systems where malfunction of
these products can reasonably be expected to result in personal injury. Philips customers using or selling
these products for use in such applications do so on their own risk and agree to fully indemnify Philips for
any damages resulting from such improper use or sale.
26.2 Licence Policy
Purchase of this Philips IC with a functionally according to ISO/IEC 15693 Standard does not convey an
implied license under any patent right on this standard. A license for the Philips portfolio of patents on the
ISO/IEC 15693 Standard can be obtained via the Philips Intellectual Property and Standards department.
For more information please contact the nearest Philips Semiconductors sales office.
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27
REVISION HISTORY
27.1 Update from Revision 2.0 to Revision 3.0
The whole document was editorial revised. New phrasings and additional descriptions have been added.
The table below refers to relevant changes in content.
Chapter
Description
5.2.4.2
Added Bits 4-3: ‘ISO Selection’
22.4.1
Chapter ‘Input Pin characteristics’: dynamical input voltage range for RX pin added
Table 0-1: Update from Revision 2.0 to Revision 3.0
27.2 Versions Up to Revision 3.0
REVISION
DATE
CPCN
PAGE
DESCRIPTION
3.0
November2002
-
first published version
2.0
June 2002
-
second published version
1.0
January2002
-
internal version
Table 0-2: Document Revision History
Philips Semiconductors - a worldwide company
Contact Information
For additional information please visit http://www.semiconductors.philips.com.Fax: +31 40 27 24825
For sales offices addresses send e-mail to: [email protected].
© Koninklijke Philips Electronics N.V. 2002
SCA74
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without any notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
P h i li p s
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