Intersil ISL5239KI Pre-distortion linearizer Datasheet

ISL5239
®
Data Sheet
September 2, 2005
FN8039.2
Pre-Distortion Linearizer
Features
The ISL5239 Pre-Distortion Linearizer (PDL) is a full featured
component for Power Amplifier (PA) linearization to improve PA
power efficiency and reduce PA cost.
• Output Sample Rates Up to 125MSPS
The Radio Frequency (RF) PA is one of the most expensive and
power-consuming devices in any wireless communication
system. The ideal RF PA would have an entirely linear
relationship between input and output, expressed as a simple
gain which applies at all power levels. Unfortunately, realizable
RF amplifiers are not completely linear and the use of predistortion techniques allows the substitution of lower cost/power
PA’s for higher cost/power PA’s.
• Dynamic Memory Effects Compensation
The ISL5239 pre-distortion linearizer enables the linearization of
less expensive PA’s to provide more efficient operation closer to
saturation. This provides the benefit of improved linearity and
efficiency, while reducing PA cost and operational expense.
• Programmable Frequency Response Correction
The ISL5239 features a 125MHz pre-distortion bandwidth
capable of full 5th order intermodulation correction for signal
bandwidths up to 20MHz. This bandwidth is particularly well
suited for 3G cellular deployments of UMTS and CDMA2000.
The device also corrects for PA memory effects that limit predistortion performance including self heating.
• Quadrature or Digital IF Architecture
The ISL5239 combines an input formatter and interpolator, predistortion linearizer, an IF converter, correction filter,
gain/phase/offset adjustment, output formatter, and input and
feedback capture memories into a single chip controlled by a 16bit linearizer interface.
• Base Station Power Amplifier Linearization
The ISL5239 supports log of power, linear magnitude, and linear
power based pre-distortion, utilizing two Look-Up Table (LUT)
based algorithms for the pre-distortion correction. The device
provides programmable scaling and offset correction, and
provides for phase imbalance adjustment.
• Full 20MHz Signal Bandwidth
• Input and Feedback Capture Memories
• LUT-based Digital Pre-distortion
• Two 18-bit Output Busses with Programmable Bit-Width
• 16-Bit Parallel µProcessor Interface
• Input Interpolator x2, x4, x8
• Low Power Architecture
• Threshold Comparator for Internal Triggering
• Lowest-Cost Full-Featured Part Available
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Operates with ISL5217 in Software Radio Solutions
• Compatible with the ISL5961 or ISL5929 D/A Converters
Ordering Information
PART
NUMBER
PART
MARKING
TEMP
RANGE
(oC)
PACKAGE
PKG. DWG.
#
ISL5239KI
ISL5239KI
-40 to 85 196 Ld BGA V196.15x15
ISL5239KIZ
(Note)
ISL5239KIZ
-40 to 85 196 Ld BGA V196.15x15
(Pb-free)
ISL5239EVAL1
25
Evaluation Kit
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2002, 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
ISL5239
Block Diagram
CLK
TRIGIN
IIN<17:0>
QIN<17:0>
CLKOUT
ISTRB
SERCLK
SERSYNC
SEROUT
SERIN
INPUT
FORMATTER
AND
INTERPOLATOR
X1, X2, X4, X8
PRE-DISTORTER
WITH
TWO 1K x 60
LUTs
IF CONVERTER
REAL 1X
REAL 2X
COMPLEX
CORRECTION
FILTER
REAL 1X
REAL 2X
COMPLEX
GAIN /
PHASE
OFFSET
ADJUST
OUTPUT
DATA
FORMATTER
8-18 BIT-WIDTH
IOUT<17:0>
QOUT<17:0>
TRIGOUT
A<5:0>
P<15:0>
CS
WR
RD
BUSY
INPUT
MEMORY
(2k x 32)
uP INTERFACE
FEEDBACK
MEMORY
(1k x 20)
RESET
2
FBCLK
FB<19:0>
Functional Block Diagram
ISL5239 Pre-Distortion Linearizer
CLKOUT
DE-MUX
ISTRB
BYPASS
BYPASS
HALF
HALF
HALF
BAND
BAND
BAND I /
FILTER
FILTER
FILTER
/
/
Q
/
/
/
1
2
3
20
18
20
IFIP I,Q
I
CM TEST
Q
INPUT TYPE
(PAR/SERIAL)
BYPASS
BYPASS
BYPASS
IF
CONV.
CORRECTION
FILTER
REAL 1X
REAL 2X
COMPLEX
GAIN /
PHASE
OFFSET
ADJUST.
PRE-D OR BYPASS
PD I,Q
BYPASS
INPUT OR TEST
OFFSET
BINARY
MUX
IIN<17:0>
QIN<17:0>
3
TEST
FUNC. SEL.
OFFSET
SCALE
PD MAG.
LUT
ADDRESS
CALCULATION
BYPASS
JTAG
PWR INTGR PER.
PWR LOW
PWR HIGH
PD MAG.
THRESHOLD
COMPARE
MAX
MIN
CHANNEL
3
MEMORY
EFFECT
COMPENSATION
DATA
LUT
COEF. A
COEF. B
SERIAL TO PAR.
POWER
INTEGRATOR
uP
TRIG SEL
IFIP I,Q
PD I,Q
PD MAG.
SER. OUTPUT EN.
DATA
uP
INPUT
STATE
ADDR
INPUT
CAPTURE
MEMORY 2K
FB
STATE
ADDR
RESET
uP FORMAT
DATA
FEEDBACK
CAPTURE
MEMORY 1K
CM TEST I,Q
MEMORY SELECT
CLK
A<5:0>
P<15:0>
CS
WR
RD
BUSY
PAR. TO SERIAL
SERIN
SERCLK
SERSYNC
SEROUT
EXTERNAL
MEMORY
EFFECTS
FPGA
FB DELAY COUNT
INPUT
SEL
TRIGOUT
TRIG
INPUT DELAY
COUNT
SERIAL INPUT EN.
COEF. B SELECT
ISL5239
TRIGIN
HM, KM, LM, GM, DC OFFSETS
OUTPUT WORD WIDTH SEL.
OUTPUT VALUE TYPE
COEF. DATA
REAL PIPELINE SEL.
COEF. ADDR.
POWER
LUT DATA Q
LUT DELTA DATA I
LUT DELTA DATA Q
ACTIVE LUT
LUT ADDR
LUT ADDR AUTO INCR.
IOUT<17:0>
QOUT<17:0>
ADDR
LUT DATA I
TMS
TDI
TCK
TRST
TDO
MODE
OUTPUT
DATA
FORMATTER
8-18 BIT-WIDTH
uP INTERFACE
FBCLK
FB<19:0>
ISL5239
Pinout
196 CABGA
TOP VIEW
1
2
3
4
5
6
7
8
9
10
11
12
13
14
NC
VCCC
IIN16
IIN12
IIN9
IIN4
IIN0
QOUT15
GND
QOUT11
GND
VCCIO
VCCC
NC
ISTRB
NC
IIN17
IIN14
VCCC
IIN7
IIN3
VCCIO
NC
GND
A3
A0
A2
IIN15
IIN11
IIN8
IIN2
QOUT16 QOUT12 VCCC QOUT7 QOUT1 QOUT3 QOUT0
CS
A1
A5
IIN13
IIN10
IIN6
IIN1
QOUT17 QOUT13 QOUT8 QOUT2
P0
VCCC
RD
A4
WR
IIN5
GND
VCCIO
P1
P2
P3
P4
FB13
FB16
P7
P6
P5
GND
P11
SEROUT
FB9
P10
P12
VCCIO
P8
P9
CLK
GND
RESET
P14
P15
P13
TDO
TCK
BUSY
QIN6
QIN0
VCCC
DCTEST
TDI
TMS
QIN17
QIN9
QIN2
VCCIO IOUT13
QIN16
QIN15
QIN13
QIN11
QIN7
QIN4
IOUT16
TRST
NC
QIN14
QIN10
VCCC
NC
VCCC
QIN12
QIN8
QIN5
A
B
VCCIO QOUT9 QOUT6 QOUT4
C
D
VCCIO QOUT5
FB17
E
VCCC QOUT14 QOUT10 FB14
FB19
FB18
VCCC
FB15
GND
FB10
FB11
SERIN
F
G
FB12
H
SERSYNC GND
VCCIO SERCLK CLKOUT
J
TRIGOUT
FB7
FB6
FB5
FB8
IOUT11
GND
FB0
VCCC
FB3
FB4
IOUT9
VCCC
IOUT4
FB1
TRIGIN
FB2
IOUT7
VCCIO
IOUT3
IOUT0
IOUT2
FBCLK
QIN3
IOUT17 IIOUT12 IOUT10
IOUT8
GND
VCCIO
NC
IOUT1
QIN1
IOUT15 IOUT14 VCCIO
GND
IOUT6
IOUT5
VCCC
NC
K
GND
L
M
GND
N
P
POWER PIN
SIGNAL PIN
GROUND PIN
THERMAL BALL
NC (Do not connect)
Pin Descriptions
NAME
TYPE
DESCRIPTION
POWER SUPPLY
VCCC
-
Positive Device Core Power Supply Voltage, 1.8V ±0.18V.
VCCIO
-
Positive Device Input/Output Power Supply Voltage, 3.3V ±0.165V.
GND
-
Common Ground, 0V
MICROPROCESSOR INTERFACE AND CONTROL
CLK
I
Input Clock. Rising edge drives all of the devices synchronous operations, except feedback capture.
RESET
I
Reset. (Active Low). Asserting reset will clear all configuration registers to their default values, reset all internal
states, and halt all processing.
P<15:0>
I/O
16-bit bi-directional data bus that operates with A<5:0>, CS, RD, and WR to write to and read from the devices
internal control registers. When the host system asserts CS and RD simultaneously, P<15:0> is an output bus,
under all other conditions, it is an input bus. Bit 15 is the MSB.
4
ISL5239
Pin Descriptions (Continued)
NAME
TYPE
DESCRIPTION
A<5:0>
I
6-bit address bus that operates with P<15:0>, CS, RD, and WR to write to and read from the devices internal
control registers. Bit 5 is the MSB.
CS
I
Chip Select. (active low). Enables device to respond to µP access by enabling read or write operations.
WR
I
Write Strobe, (active low). The data on P<15:0> is written to the destination selected by A<5:0> on the rising
edge of WR when CS is asserted (low).
RD
I
Read Strobe (Active Low). The data at the address selected by A(5:0) is placed on P<15:0> when RD is
asserted (low) and CS is asserted (low).
BUSY
O
µP Busy. (Active Low) Indicates that the µP interface is busy. The device asserts BUSY during a read operation
to indicate that the output data on P<15:0> is not ready, and it asserts this signal during a write operation to
indicate that it is not available for another read or write operation yet.
EXTERNAL SERIAL INTERFACE
SERCLK
O
Serial Clock. Clock signal provided to external device for serial input and output, derived from rising edge of
CLK.
SERSYNC
O
Serial Sync. Active high single-cycle pulse that is time coincident with the first sample of the 32-bit serial data
frame. Derived from by rising edge of CLK.
SEROUT
O
Serial Output. Output data bit for the serial interface. Derived from the rising edge of CLK.
SERIN
I
Serial Input.Input data bit for serial interface. Derived from rising edge of CLK.
FEEDBACK INTERFACE
FB<19:0>
I
Feedback Input Data. Parallel or serial data to be stored in the feedback memory. In parallel mode, all 20bits are stored on the rising edge of FBCLK. In serial mode, bit 0 is serial input data and bit 1 is serial sync,
sampled at the rising edge of FBCLK.
FBCLK
I
Input clock used for sampling the FB<19:0> pins.
TRIGIN
I
Trigger input. Hardwired trigger source to be used to trigger an input/feedback capture. Sampled internally
with rising edge of CLK.
TRIGOUT
O
Trigger output. Indicated that the capture system has been triggered, either internally or externally.
IIN<17:0>
I
I input data. Real component of the complex input sample when input format is parallel. Alternating real and
imaginary when input format is muxed. Selectable as 2’s complement or offset binary.
QIN<17:0>
I
Q input data. Imaginary component of the complex input sample when input format is parallel. Unused in serial
input format.
ISTRB
I
I data strobe. (active high). Used in the muxed input format. When asserted, the input data buses contains valid
I data.
CLKOUT
O
Input data clock. Output clock for the data source driving the IIN<17:0> and QIN<17:0> inputs. Input data
busses sampled on the rising edge of CLK that generates the rising edge of CLKOUT.
IOUT<17:0>
I
I output data. Real component of the complex output sample driven by the rising edge of CLK. Selectable as
2’s complement or offset binary.
QOUT<17:0>
I
Q output data. IMaginary component of the complex output sample driven by the rising edge of CLK. Selectable
as 2’s complement or offset binary.
O
DC tree output. NAND tree output for DC threshold test. Do not connect for normal operation.
TRIGGER INTERFACE
DATA INPUT
DATA OUTPUT
TEST ACCESS
DCTEST
JTAG TEST ACCESS PORT
TMS
I
JTAG Test Mode Select. Internally pulled up.
TDI
I
JTAG Test Data In. Internally pulled up.
TCK
I
JTAG Test Clock.
TRST
I
JTAG Test Reset (Active Low). Internally pulled-up.
TDO
O
JTAG Test Data Out.
5
ISL5239
The ISL5239 is a full-featured digital pre-distortion part
featuring a high-performance lookup-table based predistortion (PD) processing unit. It includes an interpolator for
upsampling and supports all varieties of upconversion
architectures with a programmable correction filter for
equalization including both sin(x)/x correction and removal of
frequency response imbalance between quadrature paths. It
also features gain, phase, and offset compensation for direct
upconversion, digital IF output for heterodyning, and
input/output capture memories with internal/external
triggering capabilities to facilitate closedloop feedback
processing. System implementation is typically as shown in
Figure 1. Although the power detect feedback is shown with
one Analog to Digital Converter (ADC), coherently
demodulated feedback signalsLO configurations with 1 or 2
ADC’s are also supported.
The block diagram on page 1 shows the internal functional
units within the ISL5239. In the following sections each
functional unit is described. The operation of the ISL5239 is
controlled by the register map listed in Table 3. Detailed
descriptions for each control/status register are given in
Tables 4 through 48. The control/status registers are referred
to in the discussion below.
The clock divider generates the CLKOUT signal which is
used to clock data from the input signal source. Typical input
sources include the ISL5217 quad programmable
upconverter, which is designed to operate seamlessly with
the ISL5239.
The interpolation factor is selectable in control word 0x02,
bits 6:4 as x1, x2, x4, and x8. The x1 mode bypasses all
three half-band filters. The x2 mode utilized HB1 and
bypasses HB2 and HB3. The x4 mode utilized HB1 and HB2
and bypasses HB3. Finally, the x8 mode utilizes all three
HBFs. Saturation status bits are provided for each of the
three HBFs in the status register 0x03.
Input data rates up to the CLK rate are supported, based on
the requirement CLK >= Fs * IP, where Fs is the input rate of
the incoming data and IP is the interpolation factor selected
in control word 0x02.
BYPASS
IIN<17:0>
QIN<17:0>
INPUT
FORMATTER
Functional Description
BYPASS
BYPASS
HALF
HALF
HALF
I
BAND
BAND
BAND
FILTER
FILTER
FILTER
Q
/
/
/
/
1
2
3
20
20
20
18
FIGURE 2. INPUT FORMATTER AND INTERPOLATOR
BLOCK DIAGRAM
Each half-band filter performs a x2 interpolation by inserting
one zero between each input data sample, causing the
sampling frequency to double. The resulting zero-stuffed
data is then low pass filtered to reject the upsampling image.
The half-band filter frequency responses are as shown in
Figure 3.
HALFBAND FILTER 1 RESPONSE
0
FIGURE 1. SYSTEM OVERVIEW
-20
The Input Formatter and Interpolator interfaces to the data
source to provide for parallel data input via the IIN<17:0>,
QIN<17:0> busses, or serial input via the IIN<17:0> input
bus. In parallel input mode, both 18-bit input busses are
used to allow for parallel I and Q sample loading. In serial
mode, the data is input via the IIN<17:0> bus only, as the I
sample followed by the Q sample with the ISTRB input
asserted with each I sample. In this mode, the QIN<17:0>
bus is not utilized. The input data format is selectable as
either two’s complement or offset binary.
The Interpolator function is necessary because predistorting a signal results in a much wider bandwidth signal
(typically 5x to 7x wider). The Input Formatter and
Interpolator is depicted in Figure 2.
Three interpolation rates (x2, x4, and x8) are supported by
the cascade of three Half-Band (HB) Filters. The ISL5239
includes an on-chip clock divider to facilitate input clocking.
6
MAGNITUDE (dB)
Input Formatter and Interpolator (IFIP)
-40
-60
-80
-100
-120
-140
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
NORMALIZED FREQUENCY (NYQUIST=1)
FIGURE 3. x2, HB1 ENABLED FREQUENCY RESPONSE
ISL5239
Pre-Distorter (PD)
HALFBAND FILTER 2 RESPONSE
The function of the Pre-distorter is to compute the
magnitude of the input signal, look up a complex distortion
vector based on the magnitude, and apply that distortion to
the input signal.
0
MAGNITUDE (dB)
-20
-40
The signal magnitude may be computed by any of three
different methods: log of power, linear magnitude or linear
power. The result is scaled and offset by programmable
amounts and becomes the address into a Look-up Table
(LUT).
-60
-80
-100
-120
-140
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
NORMALIZED FREQUENCY (NYQUIST=1)
FIGURE 3A. X4, HB1 AND HB2 ENABLED FREQUENCY
RESPONSE
HALFBAND FILTER 3 RESPONSE
0
MAGNITUDE (dB)
-20
-40
-60
-80
-100
-120
-140
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
NORMALIZED FREQUENCY (NYQUIST=1)
FIGURE 3B. X8, HB1-HB3 ENABLED FREQUENCY RESPONSE
7
Two LUTs are available, one of which is ‘live’ in the circuit
and the other is offline and can be loaded via the processor
interface. This configuration allows instantaneous switching
of pre-distortion characteristics without unpredictable
effects on the processed signal.
The LUTs contain a complex distortion vector, as well as
complex delta values which interact with an external
Thermal/Memory calculation circuit to predict the effects of
temperature changes on the RF amplifier’s behavior and
compensate. The average power into the amplifier is
computed and transmitted serially off chip. The external
circuits compute one or two memory effect coefficients
which are combined with the complex delta values in the
LUT to derive the final distortion vector. The distortion
vector is a rectangular complex value which is multiplied
with the input signal resulting in a magnitude based nonlinearity. Access to the LUT is optimized by the use of an
auto incrementing address register which allows the tables
to be updated with only one address register write
operation. Control words 0x10 through 0x1d apply to the
ISL5239
IF Converter (IFC)
I
Q
CM TEST
I
Q
PRE-D OR BYPASS
FROM
IFIP
INPUT OR TEST
pre-distorter. The pre-distorter block diagram is shown in
Figure 4.
LUT
ADDRESS
CALCULATION
TEST
FUNC. SEL.
OFFSET
SCALE
PD MAG.
LUT DATA I
I
Q
BYPASS
POWER
ADDR
LUT DATA Q
LUT DELTA DATA I
LUT DELTA DATA Q
ACTIVE LUT
LUT ADDR
LUT ADDR AUTO INCR.
COEF. B SELECT
The real 1x operating mode shifts the signal up by Fs/4 and
performs a complex to real conversion without changing the
base sample rate. This mode has 1/2 the bandwidth of the
original input signal, with the I output channel active and the
Q output channel set to 0. The operation of the IF converter
in this mode is shown in Figure 5.
BYPASS
DATA
MEMORY EFFECT
COMPENSATION
HALF
BAND
FILTER
I
Q
FROM
PD
I
Re{*}
ej(pi/2)(n)
FIGURE 5. IF CONVERTER IN REAL 1X MODE OPERATION
POWER
INTEGRATOR
COEF. A
COEF. B
SERIAL TO PAR.
SERIN
SER. OUTPUT EN.
Real 1X
LUT
SERIAL INPUT EN.
PWR INTGR PER.
PWR LOW
PWR HIGH
The output of the pre-distorter is a complex baseband signal
sampled at the system CLK rate. To provide greater system
flexibility, the IF Converter function can change this in one of
three different ways, providing frequency shifts, sample rate
changes and complex to real conversions.
PAR. TO SERIAL
SERCLK
SERSYNC
SEROUT
EXTERNAL
MEMORY
EFFECTS
FPGA
FIGURE 4. PRE-DISTORTER BLOCK DIAGRAM
Real 2X
The real 2x operating mode converts complex to real at 2x
the sample rate and shifts the signal up to Fs/2 (Fs/4 of the
output rate). This mode has the same bandwidth as the
original signal with the I channel carrying the first of twwo
samples/clock and the Q channel carrying the second
sample. The operation of the IF Converter in this mode is
shown in Figure 6.
Serial Interface
BYPASS
The serial interface for the external memory effects
calculation consists of outputs SERCLK, SERSYNC, and
SEROUT and input SERIN. The serial output sends the 32bit unsigned average power off-chip for further processing.
The data is transmitted via the SEROUT pin MSB first, with
the first bit marked by a high pulse on the SERSYNC pin.
The SERCLK rate is scaled such that 32 bits are transmitted
in one period of the power integrator as controlled by register
0x18 bits 5:4. SEROUT is enabled by register 0x18 bit 12.
The SERIN receives the thermal compensation parameters
from external processing using the same SERCLK and
SERSYNC used by the SEROUT. The chip expects to
receive 32 bits of data sequentially on the SERIN pin: the
MSB of A, followed by the rest of A, then the MSB of B,
followed by the rest of B. The SERIN is enabled by register
0x18 bit 8. When SERIN is disabled, registers 0x19 and
0x1a supply the A and B parameters for the thermal
compensation calculations. See Figure 16 for a detailed
timing diagram of the serial interface.
8
I
Q
FROM
PD
2
2
HALF
BAND
FILTER
Re{*}
Z-1
2
2
ej(pi/2)(n)
FIGURE 6. IF CONVERTER IN REAL 2X MODE OPERATION
I
Q
ISL5239
Correction Filter (CF)
The IF converter frequency response is as shown in
Figure 7, with the folding effect shown in Figure 7A for the
x2, Fs/4 upconverter case.
To compensate for imperfections in the analog filtering which
takes place after D/A conversion, the correction filter
provides an independent 13-tap FIR filter on each channel.
These filters may be programmed to remove differential
group delay and ripple characteristics of external analog
circuits including sin(x)/x correction and frequency response
imbalance between the I and Q channels using either
amplitude or group delay. This allows for correction of the
two physically separate I and Q analog response paths from
the DAC’s through the quadrature up-converter. It also
provides correction of the bandpass response when
operating in a complex frequency shifted IF mode. There are
two possible correction filter modes.
IFC FILTER RESPONSE (x2 MODE)
0
MAGNITUDE (dB)
-20
-40
-60
-80
-100
-120
-140
Real 2X
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
When the IF Converter is set to generate 2x sampled real
data, the Correction Filter must be reconfigured to process
this data correctly. In this mode it effectively provides one 13tap block-mode filter when the coefficients for the two filters
are programmed identically.
NORMALIZED FREQUENCY (NYQUIST=1)
FIGURE 7. x2, IFC FREQUENCY RESPONSE
IFC FILTER RESPONSE (x2 MODE, WITH FOLDING)
0
BYPASS
-20
MAGNITUDE (dB)
I
-40
2
Q
FROM
IFC
-60
-80
2
Z-1
I/Q FIRs
Z-1
I
2
Q
2
FIGURE 9. CORRECTION FILTER IN REAL 2X MODE
-100
Complex or Real 1x
-120
-140
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
When configured for operation in the complex mode, one 13tap filter is provided for each the I and Q channels. In Real 1x
mode, the Q channel is not used.
1
NORMALIZED FREQUENCY (NYQUIST=1)
FIGURE 7A. x2, IFC FREQUENCY RESP. WITH FOLDING
BYPASS
I
Complex
The complex operating mode simply shifts the complex
baseband signal up by Fs/4 without any filtering or real
conversion. The operation of the IF converter in this mode is
shown in Figure 8.
BYPASS
I-CHAN
FIR
Q-CHAN
FIR
I
Q
FIGURE 10. CORRECTION FILTER IN COMPLEX MODE
Output Data Conditioner (ODC)
I
I
Q
FROM
PD
Q
ej(pi/2)(n)
FIGURE 8. IF CONVERTER IN COMPLEX MODE OPERATION
9
Q
FROM
IFC
The Output Data Conditioner can apply I/Q balance
corrections, DC offset corrections and output format
conversions.
To compensate for gain/phase imperfections in external
analog modulation circuits which can result in poor image
rejection and reduced dynamic range, the ODC provides an
I/Q balance corrector. The I/Q balance corrector provides
four coefficients to control the magnitude of the direct and
ISL5239
cross-coupled term on both the I and Q channels. Typical
implementation is as shown in Figure 10.
FIGURE 11. IMBALANCE CORRECTION
The Output formatter also provides DC offset correction to
1/4 LSB for 18-bit outputs to reduce analog DC offsets
introduced in external D/A conversion and modulation
circuits which can degrade system performance by causing
carrier feed through in complex baseband systems, or spurs
at DC for IF systems.
The ODC also provides programmable output precision 8 to
18-bits, with unbiased (convergent) rounding, since practical
system designs will require D/A converters with fewer than
18-bits. Internal accuracy is in excess of 18-bits, and utilizes
20-bit data paths in critical areas. Additionally, both two’s
complement and offset binary formats are supported.
Capture Memory (CM)
The Capture Memory allows the capture and viewing of data
from various points in the chip. The primary function is to
capture the digital signals coming into the pre-distorter. The
CM also provides a secondary mode, as it can provide
stimulus directly to the pre-Distorter. The CM is comprised of
both the Input and the Feedback Memories. The processor
interface provides the access to view, input, and alter the
memory data. Synchronized (triggered) capture of both input
and feedback signals is a typical requirement of adaptive
digital pre-distortion systems.
Input Memory
The input capture memory observes the signals going into
the amplifier. The 2K deep memory grabs complex samples
of data at one of three possible locations, either at the input
to the pre-distorter, the output of the pre-distorter, or from its
magnitude calculation. In addition to capturing input data,
this memory may also be configured as a data source. The
input capture memory may be pre-loaded with user defined
data and ‘played’ into the pre-distorter to stimulate the
system with signals that will elicit a desired response.
10
Feedback Memory
The feedback memory allows the user to capture data from
an external system and to view the memory through the
processor interface. The feedback memory is used to
observe the signals coming out of the amplifier. The 1K deep
memory grabs 20-bit data, either in parallel or serial format.
The feedback capture memory has its own clock input,
FBCLK, which must be synchronously derived from CLK and
meet the timing requirements.
Capture operations may be triggered by an external signal
(TRIGIN), by magnitude threshold crossings detection
programmed in the magnitude threshold maximum and
minimum values, or by system software writing to the
processor trigger bit in control word 0x04, bit 6. Separate
programmable delays of up to 32k samples are provided for
both input memory and feedback capture, allowing system
delays to be calibrated out for optimum alignment prior to
analysis. A TRIGOUT output is provided to indicates when a
capture operation has begun.
The processor interface to the capture memories is designed
to minimize the time required for loading/unloading. Although
access to the memories takes place through indirect address
and data registers, auto incrementing of the address is
supported so the address only needs to be written once to
access the entire memory. The capture memory is as shown
in Figure 13.
TRIGIN
MAG COMP
uP
TRIG SEL
IFC I,Q
PD I,Q
PD MAG
TRIG
INPUT DELAY
COUNT
FB DELAY COUNT
INPUT
SEL
DATA
uP
INPUT
STATE
ADDR
INPUT
CAPTURE
MEMORY 2K
FB
STATE
ADDR
uP FORMAT
FBCLK
FB<19:0>
DATA
FEEDBACK
CAPTURE
MEMORY 1K
CM TEST I,Q
MEMORY SELECT
uP INTERFACE
FIGURE 12. CAPTURE MEMORY BLOCK DIAGRAM
Memory Modes and Programming Instructions
Unless noted, the following discussion applies to both the
input memory and feedback memory operations. Prior to
invoking the memory to capture or send data, the control
word 0x06, bits 14:0 input trigger delay counter, 0x08 bits
14:0 feedback trigger delay count, 0x05, bits 10:0 input
length, 0x04, bits 2:1 input memory datain source or 0x04,
bit 8 feedback input format, and 0x04, bits 5:4 trigger select
registers must be loaded.
ISL5239
For the input data, the 0x04, bit 3 input data round bit must
also be selected and the feedback memory length count is
always set to 1024. To invoke memory operation, the 0x07,
bit 4 feedback memory mode or bits 1:0 input memory mode
and 0x04, bit 6 processor trigger must be controlled.
There are three modes of operation — capture, loop, and
single-shot. The feedback memory does not have a loop
mode. A synopsis of the three modes is described below.
Capture Mode
There are two types of capture mode — advanced trigger
and single/capture. The advanced trigger mode allows data
to be captured around a trigger point, and the quantity of the
data captured after the trigger point is set by 0x06, bits 14:0.
When input memory capture mode = DELAY, the delay
register acts as a delay count prior to the capture or sending
of data. The max delay in this case is 32768 counts or
system clock ticks. The advanced trigger mode is used in
capture mode only. With the feedback capture operations
being analogous to the input memory, one feedback memory
exception is its control register 0x08, bits 14:0. It has 10
LSBs of available capture space.
Advanced Trigger Capture Mode Sequence
The control register 0x0e, bit 13:12 input capture status,
should be in IDLE. Set 0x06, bit 15, input memory capture
mode to ADVANCE to signify an advanced trigger capture.
0x06, bits 14:0 set the input trigger delay counter to = 0x56
signifies there are 86 points captured after the occurrence of
the trigger point, 0x0e, bit 10:0, input trigger position and all
other points are captured prior to trigger point. Note: only the
11 lsbs are valid for the delay capture in this mode. The input
trigger position is a read-only register and adding to it the 11
lsbs of the input trigger delay counter determines the
position of the final data point captured after the trigger. If the
input trigger position is 0x1ff, the final point captured
occurred at address: 0x1ff + 0x56 = 0x255 or 597 (decimal).
The user must set the input trigger delay counter prior to
invoking the transaction of the capture.
The user invokes the capture mode register by writing
CAPTURE to 0x07, bit 1:0 input memory mode. The system
is in the advanced trigger capture mode and 0x0e, bits
13:12, input capture status is ARMED. The system waits for
a trigger as the memory is continuously being written into.
When a trigger occurs, the trigger causes the memory to
load the data till the memory address is equal to input trigger
position + 11 lsbs of the input trigger delay counter. The
memory address that is time coincident with the trigger
occurrence latches to the input trigger position. During this
period, the input capture status is LOADING. When the final
capture point loads, the input capture status returns to IDLE
and a new capture transaction can be initiated by writing
CAPTURE to the input memory mode.
11
Single/Capture Mode
The sequence for the single shot stimulus mode, input
memory mode = SINGLE, and input memory capture mode
= CAPTURE with input capture mode = DELAY are the
identical. The function of the memory reading or writing
provides the difference between the two modes. In the single
shot case, the capture memories read data to the output bus,
and in the capture mode, they write data to the memories.
The sequence of operation in the Single/Capture mode is
described below.
The input capture status should be in IDLE and the input
memory capture mode in DELAY with the input memory
delay counter set to 0x0056. Note: The 15 LSBs of the input
memory delay counter are valid for the delay count in this
mode. After the trigger, Ox56 signifies there are 86 counts of
delay before the start of the capture/send of data to/from the
memory.
The user invokes the capture mode by writing the input
memory mode to CAPTURE. The system is in the capture
mode and the input memory status is ARMED. The system
waits for a trigger and the memory is idle at this point. When
a trigger occurs, the trigger causes the delay counters to
count 86 clocks of delay. At the end of the delay, the
memories begin their writing sequence until input memory
length data points are written. During the writing of data, the
input memory status is LOADING. When the final input
memory length point is written, the input memory status
returns to IDLE and a new capture transaction can be
initiated by writing CAPTURE to the input memory mode.
For the Single Capture mode, the deviations from the
sequence are the writing of the input memory mode to
SINGLE, and the input memory status to SEND when
reading of the data from memory. All other operations are
analogous.
Loop Mode
This is a continuous play mode from the memories;
therefore, the memories should contain valid data before
invoking transactions. The length of each repeatable output
stream is controlled by the input memory length. Upon
outputting the final input memory length point, the hardware
resets to play another set of input memory length points from
the memory.
The user invokes the loop mode by writing input memory
mode to LOOP. The system is in the loop mode and the input
memory status = SEND. The memory starts reading data
continuously and a stop can be initiated by setting input
memory mode to IDLE during the transaction. The input
memory status returns to IDLE and a new loop transaction
can be initiated by writing the input memory mode to LOOP.
This is the only mode where immediate mode changes are
acknowledged during its transaction cycle.
ISL5239
General Comments About Modes
Once a trigger is detected in the ARMED condition, all
following triggers are ignored during the sequence. The
system does not acknowledge new triggers until a new
transaction is invoked and re-armed. When a new mode is
invoked, all subsequent invocations of new modes during the
duration of its sequence is ignored, except in the loop mode.
In the loop mode, an input memory mode change to IDLE is
processed immediately.
When in the IDLE, all controls, addresses, and data, default
to the processor interface values.
Triggers
When a capture memory is ARMED, i.e. waiting for a trigger
to happen, the activation of the trigger occurs in three ways
— external, data dependent, and user invoked. The trigger
select, 0x04, bits 5:4, provides the selection of the trigger
source. When the pre-distorter magnitude bus values fall
between the range of 0x09 minimum and 0x0a maximum,
the data dependent trigger activates. The first of these
transitions causes a trigger to be detected and the remaining
triggers during the capture sequence is ignored.
To invoke the user invoked trigger, 0x04, 5:4, set to
processor, the programmer writes a TRIGGER to the 0x04,
bit 6 processor trigger register. After a TRIGGER is in the
field, the user initiates the trigger by just writing to that
register. The user does not have to reset the trigger back to
IDLE. By setting the processor trigger bit to IDLE when not in
use, it keeps the circuit quiet and allows the user to write to
other values at that address without causing a trigger to
occur during operation. To disable the processor trigger, the
user should change trigger select to something other than
PROCESSOR and then change values in processor trigger.
If trigger select is not set to PROCESSOR, the system
ignores the trigger generated by processor trigger.
The feedback and input memory circuit uses the same
trigger; both circuits trigger at the same point with its
operation registers causing different operations to occur. The
user should monitor input memory status and feedback
memory status simultaneously before activating triggers.
Make sure both status registers are in ARMED before
activating triggers or the results from the capture can be
erroneous and data can be overwritten. Selecting processor
trigger (register 0x04, bits 5:4 = 00) while arming the input
and feedback memory circuits is a convenient way to ensure
no unexpected triggers occur before confirming ARMED
status of both circuits.
Input Data to Input Memory
There are three sources of input data to the input memory —
interpolator, pre-distorter’s data outputs, and the predistorter’s magnitude. Data from the interpolator and the
predistort output are the upper 16 bits with or without
rounding. Only 16 of the original 20 bits of I or Q is loaded
12
into the memory. The I data is read from the memory on the
DataHigh register and the Q data, DataLow register.
In the predistort magnitude input, the data is unsigned 16
bits and the software has to reshuffle the data to extract the
original magnitude. The DataHigh contains only the predistorter magnitude bit 15, and the DataLow contains the
pre-distorter magnitude 14:0.
Writing/Reading the Memories from the Processor
Interface
In the auto-increment mode, the data is loaded in 16-bit
increments. The low word is written or read first followed by
the high word. The high word increments the address
counter and generates the actual write to the memory. For
reading, it just increments the counter. The input memory
select 0x04, bit 12, selects the memory to be written to or
read from.
When writing or reading a specific address, the 0x0b
address register must be loaded before the 0x0c and 0x0d
memory data registers. In the write, the high word
transaction will trigger the actual write to the memory and a
low word must be written first. For additional details, see the
uP interface section.
Microprocessor Interface
The microprocessor interface allows the ISL5239 to appear
as a memory mapped peripheral to the µP. All registers can
be accessed through this interface. The interface consists of
a 16 bit bidirectional data bus, P<15:0>, six bit address bus,
A<5:0>, a write strobe (WR), a read strobe (RD) and a chip
enable (CE). The interface is configured for separate read
and write strobe inputs.
The processor interface provides a simple parallel
Data/Control/Address bus for monitoring and controlling its
operation. The processor interface is asynchronous to the
CLK, and BUSY signal is included to indicate when read and
write operations are complete.
The register configuration is master/slave, where the slave
registers are updated from the masters and all reads access
the slaves.
The master registers are clocked by the µP WR strobe, are
writable and cleared by a hard reset. The slave registers are
clocked by CLK, and are readable and cleared by either a
hard or soft reset. The transfer of configuration data from the
master register to the slave register occurs synchronously
after an event and requires a four clock synchronization
period.
The µP can perform back-to-back accesses to the register,
but must maintain four fCLK periods between accesses to
the same address. This limits the maximum µP access rate
for the RAM to 125MHz/4 = 31.25MHz.
ISL5239
The address map and bit field details for the microprocessor
interface is shown in the Tables 2-48. The procedures for
reading and writing to this interface are provided below.
Microprocessor Read/Write Procedure
The ISL5239 offers the user microprocessor read/write
access to all of the configuration registers and the capture
memory.
Configuration Read/Write Procedure
Write Access to the Configuration Master
Registers
Perform a direct write to the configuration master registers
by setting up the address A<5:0>, data P<15:0>, enabling the
CS input, and generating WR strobe. The rising edge of the
WR initiates the transfer to the master register. Registers may
be written in any order.
1. Write the global control register 0x00.
3. Perform a direct write to control word 0x17 by setting up
the address on A<5:0>, data on P<15:0>, and generating
a rising edge on WR. The WR updates the contents of
0x014-0x017 and performs the auto increment, if
enabled.
Read Access to the LUT
1. Perform a direct write to control word 0x13 by setting up
the address on A<5:0>, data on P<15:0>, and generating
a rising edge on WR. 0x13 selects the auto increment
mode and the LUT address as specified in bit 9:0.
2. Perform a direct read of any/all control words 0x14, 0x15,
0x16, in any order, by dropping the RD line low to transfer
data from the slave register selected by A<5:0> onto the
data bus P<15:0>.
3. Perform a direct read of control word 0x17 by dropping the
RD line low to transfer data from the slave register
selected by A<5:0> onto the data bus P<15:0>. Reading
from this control word performs the auto increment, if
enabled.
2. Write all remaining registers sequentially.
Capture Memory Read/Write Procedure
3. Load all IFIP, PD, IFC, CM and ODC coefficients and
control words.
Indirect addressing is used to access the Capture Memory.
The control word 0x04, bit 12 selects whether the input or
feedback memory is accessed and bit 13 selects the auto
address increment or manual modes. Control word 0x0b is
the memory address, and words 0x0c and 0x0d combine to
form the 32-bit word which is written or read from the
memory. The write to 0x0d triggers the write to the memory
and the auto increment of the address, if enabled. When
reading feedback capture memory, 0x0c bits 3:0 will contain
the upper four bits, and 0x0d, bits 15:0 will be the remaining
15-bits.
RD
WR
A<5:0>
0x00
P<15:0>
0x01 0x02
0x03
0x04
0x05
xxxx
FIGURE 13. CONFIGURATION WRITE TRANSFER
Read Access to the Configuration Slave Registers
1. Perform a direct read of a configuration register by
dropping the RD line low to transfer data from the register
selected by A<5:0> onto the data bus P<15:0>.
RD
WR
A<5:0>
0X00
0X01 0X02
0X03
0X04
0X05
P<15:0> HI-Z
DATA VALID
FIGURE 14. CONFIGURATION READ TRANSFER
LUT Read/Write Procedure
Write Access to the LUT Memory
1. Perform a direct write to control word 0x13 by setting up
the address on A<5:0>, data on P<15:0>, and generating
a rising edge on WR. 0x13 selects the auto increment
mode and the LUT address as specified in bit 9:0.
2. Perform a direct write to any/all control words 0x14, 0x15,
or 0x16, in any order, by setting up the address on A<5:0>,
data on P<15:0>, and generating a rising edge on WR.
13
Write Access to the Capture Memory
1. Perform a direct write to control word 0x04 by setting up
the address on A<5:0>, data on P<15:0>, and generating
a rising edge on WR. 0x04 selects the auto increment
mode and the input or feedback memories.
2. Perform a direct write to control word 0x0b by setting up
the address on A<5:0>, data on P<15:0>, and generating
a rising edge on WR. 0x0b selects the starting memory
address.
3. Perform a direct write to 0x0c by setting up the address on
A<5:0>, data on P<15:0>, and generating a rising edge on
WR.
4. Perform a direct write to control word 0x0d by setting up
the address on A<5:0>, data on P<15:0>, and generating
a rising edge on WR. The WR updates the contents of
0x0c and 0x0d and performs the auto increment, if
enabled.
ISL5239
Read Access to the Capture Memory
Software Hard Reset
1. Perform a direct write to control word 0x04 by setting up
the address on A<5:0>, data on P<15:0>, and generating
a rising edge on WR. 0x04 selects the auto increment
mode and the input or feedback memories.
The µP can issue a reset command through the global
control register 0x00, bit 4. This reset is identical to asserting
the RESET pin, except the control fields 0x00 and 0x01 are
not affected, and the uP interface is not reset.
2. Perform a direct read of 0x0c by dropping the RD line low
to transfer data from the slave register selected by
A<5:0> onto the data bus P<15:0>.
Software Soft Reset
3. Perform a direct read of control word 0x0d by dropping the
RD line low to transfer data from the slave register
selected by A<5:0> onto the data bus P<15:0>. Reading
from this control word performs the auto increment, if
enabled.
Correction Filter Read/Write Procedure
Write Access to the Correction Filter Coefficients
1. Perform a direct write to control word 0x28 by setting up
the address on A<5:0>, data on P<15:0>, and generating
a rising edge on WR. 0x28 selects the auto increment
mode.
2. Perform a direct write to control word 0x29 by setting up
the address on A<5:0>, data on P<15:0>, and generating
a rising edge on WR. 0x29 selects the coefficient address
for I or Q.
3. Perform a direct write to control word 0x2a by setting up
the address on A<5:0>, data on P<15:0>, and generating
a rising edge on WR.
4. Repeat step 3 until all 13 coefficients for I and for Q have
been loaded as the master registers are transferred to the
slaves when the last Q coefficient is written.
Read Access to the Correction Filter Coefficients
1. Perform a direct write to control word 0x028 by setting up
the address on A<5:0>, data on P<15:0>, and generating
a rising edge on WR. 0x28 selects the auto increment
mode.
2. Perform a direct write to control word 0x029 by setting up
the address on A<5:0>, data on P<15:0>, and generating
a rising edge on WR.
3. Perform a direct read of 0x2a by dropping the RD line low
to transfer data from the slave register selected by
A<5:0> onto the data bus P<15:0>.
Latency
To be provided later.
Reset
There are three types of chip resets.
RESET pin
A hard reset can occur by asserting the input pin RESET
which resets all chip registers to their default condition, and
resets the uP interface.
14
The uP can issue a reset command through the global
control register 0x00, bit 0, which is identical to a Software
hard reset, but none of the control registers are reset. A soft
reset leaves the device in an idle state.
JTAG Test
The IEEE 1149.1 Joint Test Action Group boundary scan
standard operational codes shown in Table 9 are supported.
A separate application note is available with implementation
details and the BSDL file is available.
TABLE 1. JTAG OP CODES SUPPORTED
INSTRUCTION
OP CODE
EXTEST
0000
IDCODE
0001
SAMPLE/PRELOAD
0010
INTEST
0011
BYPASS
1111
Power-up Sequencing
The ISL5239 core and I/O blocks are isolated by structures
which may become forward biased if the supply voltages are
not at specified levels. During the power-up and power-down
operations, differences in the starting point and ramp rates of
the two supplies may cause current to flow in the isolation
structures which, when prolonged and excessive, can
reduce the usable life of the device. In general, the most
preferred case would be to power-up or down the core and
I/O structures simultaneously. However, it is also safe to
power-up the core prior to the I/O block if simultaneous
application of the supplies is not possible. In this case, the
I/O voltage should be applied within 10 ms to 100 ms
nominally to preserve component reliability. Bringing the
core and I/O supplies to their respective regulation levels in
a maximum time frame of a 100 ms, moderates the stresses
placed on both, the power supply and the ISL5239. When
powering down, simultaneous removal is preferred, but It is
also safe to remove the I/O supply prior to the core supply. If
the core power is removed first, the I/O supply should also
be removed within 10-100mS.
Application Notes and Evaluation Boards
The ISL5239 operation can be demonstrated via the
ISL5239EVAL1 board. All required hardware and Windows
GUI software are supplied with both a user’s manual and
accompanying applications notes.
ISL5239
Absolute Maximum Ratings
Thermal Information
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . +2.5VCCC, 4.6V VCCIO
Input, Output or I/O Voltage . . . . . . . . . . . . . . . . . GND -0.5V to 5.5V
ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class 2
Thermal Resistance (Typical, Notes 1, 2)
Operating Conditions
Voltage Range Core, VCCC . . . . . . . . . . . . . . . . . . +1.71V to +1.89V
Voltage Range I/O, VCCCIO (Note 3) . . . . . . . . . +3.135V to +3.465V
Temperature Range
Industrial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC
Input Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V to +0.8V
Input High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2V to VCC
θJA (oC/W)
196 BGA Package . . . . . . . . . . . . . . . . . . . . . . . . . .
42
w/200 LFM Air Flow . . . . . . . . . . . . . . . . . . . . . . . . .
38
w/400 LFM Air Flow . . . . . . . . . . . . . . . . . . . . . . . . .
36
Maximum Storage Temperature Range . . . . . . . . . . -65oC to 150oC
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . 125oC
For Recommended Soldering Conditions, See Tech Brief TB334.
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board. See Tech Brief TB379.
2. With “direct attach” features (i.e., vias in the PCB), the thermal resistance is 36 without airflow, w/200 it is 33, w/400 it is 31oC/W. Tie 196 BGA
package pins F6-9, G6-9, H6-9, J6-9 to heat sink or ground with vias to ensure maximum device heat dissipation.
3. Single supply operation of both the core VCCC and I/O VCCIO at 1.8V is not allowed.
DC Electrical Specifications VCCC = 1.8± 5%, VCCIO = 3.3 ±5%, TA = -40oC to 85oC
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
Typ
MAX
UNITS
Logical One Input Voltage
VIH
VCCC = 1.89V, VCCIO = 3.465V
2.0
-
V
Logical Zero Input Voltage
VIL
VCCC = 1.71V, VCCIO = 3.135V
-
0.8
V
Clock Input High
VIHC
VCCC = 1.89V, VCCIO = 3.465V
2.0
-
V
Clock Input Low
VILC
VCCC = 1.71V, VCCIO = 3.135V
-
0.8
V
Output High Voltage
VOH
IOH = -2mA, VCCC = 1.71V, VCCIO = 3.135V
VCC-0.2
-
V
Output Low Voltage
VOL
IOL = 2mA, VCCC = 1.71V, VCCIO = 3.135V
0.2
0.4
V
2.6
Input Leakage Current
IL
VIN = VCCIO or GND, VCCC = 1.89V,
VCCIO = 3.465V
-10
1
10
µA
Output Leakage Current
IH
VIN = VCCIO or GND, VCCC = 1.89V,
VCCIO = 3.465V
-10
1
10
µA
Input Pull-up Leakage Current Low
ISL
VIN = VCCIO or GND, VCCC = 1.89V,
VCCIO = 3.465V, TMS, TRST, TDI
-100
-50
-
µA
Input Pull-up Leakage Current High
ISH
VIN = VCCIO or GND, VCCC = 1.89V,
VCCIO = 3.465V, TMS, TRST, TDI
-
1
10
µA
1
100
3
500
mA(core)
uA(I/O)
Standby Power Supply Current
ICCSB
VCCC = 1.89V, VCCIO = 3.465V, Outputs Not
Loaded
-
Operating Power Supply Current
ICCOP
f = 125MHz, VIN = VCCIO or GND,
VCCIO = 3.465V, VCCC = 1.89V,
-
300
100
mA (Core)
mA(I/O),
(Note 4)
CIN
Freq = 1MHz, VCCIO Open, All Measurements
Are Referenced to Device Ground
-
5
pF (Note 5)
COUT
Freq = 1MHz, VCCIO Open, All Measurements
are Referenced to Device Ground
-
5
pF (Note 5)
Input Capacitance
Output Capacitance
NOTES:
4. Power Supply current is proportional to operation frequency. Typical rating for ICCOP is 2.0 mA/MHz (core) and 0.5mA/MHz(I/O),
5. Capacitance TA = 25oC, controlled via design or process parameters and not directly tested. Characterized upon initial design and at major
process or design changes.
15
ISL5239
AC Electrical Specifications
VCCC = 1.8± 5%, VCCIO = 3.3 ± 5%, TA = -40oC to 85oC (Note 6)
PARAMETER
SYMBOL
MIN
MAX
UNITS
CLK Frequency
f CLK
-
125
MHz
CLK Period
t CLK
8.0
-
ns
CLK High, FBCLK High
t CH
3
-
ns
CLK Low, FBCLK Low
t CL
3
-
ns
Setup Time RESET High to CLK (Note 8)
t RS
2
-
ns
Hold RESET High from CLK
t RH
2
-
ns
RESET Low Pulse Width (Note 7)
t RPW
2
-
CLK Cycles
Setup Time P<15:0> to WR
t PSW
1
-
ns
Hold Time P<15:0> from WR
t PHW
4
-
ns
Setup Time A<5:0> to WR
t ASW
0
-
ns
Hold Time A<5:0> from WR
t AHW
4
-
ns
Setup Time CS to WR
t CSW
0
-
ns
Hold Time CS from WR
t CHW
3
-
ns
Delay Time from WR to BUSY
t BDW
-
8
ns
Setup Time WR to CLK (Note 9)
t WSC
3
-
ns
Hold Time WR from CLK
t WHC
0
-
ns
WR Pulse Width High
t WPWH
3
-
ns
WR Pulse Width Low
t WPWL
3
-
ns
Setup Time from RD to CLK
t RSR
1
-
ns
Hold Time RD from CLK
t RHR
2
-
ns
Setup Time from CS to CLK
t CSR
1
-
ns
Hold Time CS from CLK
t CHR
2
-
ns
Setup Time from A<5:0> to CS and RD (Note 7)
t ASR
-2
-
CLK Cycles
Setup Time from A<5:0> to CLK
t ASC
3
-
ns
Delay Time from CS and RD to P<15:0> Enable (Note 7)
t RE
-
8
ns
Delay Time from CS and RD to P<15:0> Disable (Note 7)
t RD
-
6
ns
Delay Time from CLK to P<15:0> valid
t DR1
-
7
ns
Setup Time IIN<17:0>, QIN<17:0>, or ISTRB to CLK
t DS
2
-
ns
Hold Time IIN<17:0>, QIN<17:0>, or ISTRB from CLK
t DH
2
-
ns
Delay Time from CLK to CLKOUT in x1 Mode
t CC01
7
ns
Delay Time from CLK to CLKOUT in x2, x4, x8 Mode
t CC0N
8
ns
Delay Time from CLK to IOUT<17:0>, QOUT<17:0> valid
t PDC1
2 (Note 7)
8
ns
Time Skew from CLK to FBCLK (Note 7)
t CFBD
-0.1
tCLK - 2
ns
Setup Time from FB<19:0> to FBCLK
t FS
2
ns
Hold Time FB<19:0> from FBCLK
t FH
1
ns
Delay Time from CLK to SERSYNC
t SD1
2 (Note 7)
7
ns
Delay Time from CLK to SEROUT
t SD2
2 (Note 7)
8
ns
Delay Time from CLK to SERCLK in Period_32 Mode
t SC1
2 (Note 7)
9
ns
Delay Time from CLK to SERCLK in Period_64 or Period_128 Modes
t SCN
2 (Note 7)
8
ns
Setup Time from SERIN to CLK (Note 7)
t DSS
1
16
ns
ISL5239
AC Electrical Specifications
VCCC = 1.8± 5%, VCCIO = 3.3 ± 5%, TA = -40oC to 85oC (Note 6) (Continued)
PARAMETER
SYMBOL
MIN
Hold Time SERIN from CLK (Note 7)
t DHS
1
Delay Time from CLK to TRIGOUT
t PDC
2 (Note 7)
Setup Time from TRIGIN to CLK
t DS1
2
ns
Hold Time TRIGIN from CLK
t DH1
2
ns
Setup Time from TMS and TDI to TCK
t TS
3
ns
Hold Time TMS and TDI from TCK
t TH
3
ns
Delay Time from TCK to TDO valid
t TD
8
ns
fT
50
MHz
3
ns
Test Clock Frequency
Output Rise/Fall Time (Note 7)
t RF
MAX
UNITS
ns
7
-
ns
NOTES:
6. AC tests performed with CL = 70pF. Input reference level for CLK is 1.5V, all other inputs 1.5V.
Test VIH = 3.0V, VIHC = 3.0V, VIL = 0V, VOL = 1.5V, VOH = 1.5V.
7. Controlled via design or process parameters and not directly tested. Characterized upon initial design and at major process or design changes.
8. Can be asynchronous to CLK, specification guarantying which CLK edge the device comes out of reset on.
9. Can be asynchronous to CLK, specification guarantying which CLK edge the device begins the read cycle on.
AC Test Load Circuit
S1
DUT
CL †
±
SWITCH S1 OPEN FOR ICCSB AND ICCOP
† TEST HEAD CAPACITANCE
IOH
1.5V
IOL
EQUIVALENT CIRCUIT
Waveforms
CLK
tSC1,tSCN
tCLK
tCH
tCLK = 1 / FCLK
SERCLK
tCL
tSD1
SERSYNC
CLK
tSD2
tRS
tRH
tRPW
SEROUT
tDSS
RESET
tDHS
SERIN
FIGURE 15. CLOCK AND RESET TIMING
17
FIGURE 16. SERIAL INTERFACE RELATIVE TIMING
ISL5239
Waveforms
(Continued)
CLK
tDS
tDH
IN<17:0>,
QIN<17:0>,
ISTRB
VALID
VALID
CLK
tCCO1, tCCON
tPDC
CLKOUT
tDH1
TRIGIN
tDS1
tPDC1
IOUT<19:0>,
QOUT<19:0>
VALID
VALID
VALID
TRIGOUT
FIGURE 18. TRIGGER PORT TIMING
FIGURE 17. INPUT/OUTPUT TIMING
CLK
tCFBD
TCK
tTS
tTH
FBCLK
tFS
TMS, TDI
tFH
tTD
FB<19:0>
VALID
TDO
FIGURE 19. FEEDBACK TIMING
CLK
CLK
RD
FIGURE 20. JTAG TIMING
tRSR
tRHR
RD
tWHC
tWSC
tWPWL
WR
tWPWH
tBDW
WR
4 CLK CYCLES
BUSY
tCSW
tCHW
BUSY
tCSR
CS
CS
tASW
tAHW
A<5:0>
VALID
tASC
A<5:0>
VALID
FIGURE 21. MICROPROCESSOR WRITE TIMING
18
VALID
tDR1
tRD
tASR
tRE
tPSW
tPHW
P<15:0>
tCHR
P<15:0>
VALID
FIGURE 22. MICROPROCESSOR READ TIMING
ISL5239
Programming Information and Device Control Registers
TABLE 2. CONTROL REGISTER MAP
ADDRESS
(5:0)
TYPE
00
R/W
01
R
02
R/W
03
R
04
R/W
05
FUNCTION
Global
DESCRIPTION
RESET DEFAULT
Chip Control
0x0000
Chip ID
0x0000
Control
0x0000
Status
0x0000
Control
0x0000
R/W
Length of Input Memory Loops
0x0000
06
R/W
Input Memory Capture Mode and Trigger Delay
0x0000
07
R/W
Operating Modes
0x0000
08
R/W
Feedback Memory Capture Mode and Trigger
Delay
0x0000
09
R/W
Magnitude Threshold Minimum Value
0x0000
0a
R/W
Magnitude Threshold Maximum Value
0x0000
0b
R/W
Memory Address
0x0000
0c
R/W
Memory Data LSW
0x0000
0d
R/W
Memory Data MSW
0x0000
0e
R
Input Memory Status
0x0000
0f
R
Feedback Memory Status
0x0000
10
R/W
Control
0x0000
11
R/W
Magnitude Function Control
0x0000
12
R/W
Magnitude Function Scale Factor
0x0000
13
R/W
Look-Up Table Control
0x0000
14
R/W
Look-Up Table Delta Imaginary Data
0x0000
15
R/W
Look-Up Table Delta Real Data
0x0000
16
R/W
Look-Up Table Imaginary Data
0x0000
17
R/W
Look-Up Table Real Data
0x0000
18
R/W
Memory Effect Control
0x0000
19
R/W
Memory Effect Coefficient A
0x0000
1a
R/W
Memory Effect Coefficient B
0x0000
1b
R/W
Memory Effect Power Integrator LSW
0x0000
1c
R/W
Memory Effect Power Integrator MSW
0x0000
1d
R
Status
0x0000
20
R/W
Control
0x0002
21
R
Status
0x0000
28
R/W
Control
0x0000
29
R/W
Coefficient Index
0x0000
2a
R/W
Coefficient Value
0x0000
2b
R
Status
0x0000
Input Formatter and Interpolator
Capture Memory
Pre-Distorter
IF Converter
Correction Filter
19
ISL5239
TABLE 2. CONTROL REGISTER MAP (Continued)
ADDRESS
(5:0)
TYPE
30
R/W
31
FUNCTION
Output Data Conditioner
DESCRIPTION
RESET DEFAULT
Control
0x0000
R/W
I-to-I (hm) Coefficient
0x0000
32
R/W
Q-to-I (km) Coefficient
0x0000
33
R/W
I-to-Q(Im) Coefficient
0x0000
34
R/W
Q-to-Q (gm) Coefficient
0x0000
35
R/W
I-Channel DC Offset MSW
0x0000
36
R/W
I-Channel DC Offset LSW
0x0000
37
R/W
Q-Channel DC Offset MSW
0x0000
38
R/W
Q-Channel DC Offset LSW
0x0000
39
R
Status
0x0000
TABLE 3. CHIP CONTROL
TYPE: GLOBAL: ADDRESS: 0x00
BIT
FUNCTION
DESCRIPTION
15:11
Reserved
Not Used
10:8
ID Index
Pointer that selects a pair of characters from the Chip Identification, where the Chip Identification is a
string of 16 ASCII characters. The ChipID field provides access to the selected character pair. For
example, if the Chip Identification is the first 16 letters of the alphabet,—“ABCD…P”—then setting
ID_Index = PAIR_0, selects the left-most pair, AB, which can be accessed by reading the ChipID field.
Setting ID_Index = PAIR_1, selects the pair, CD.
000 - Pair 0
001 - Pair 1
010 - Pair 2
011 - Pair 3
100 - Pair 4
101 - Pair 5
110 - Pair 6
111 - Pair 7
7:5
Reserved
Not Used
Hard Reset
Control bit that resets the entire chip except the Processor Interface (PI) block. Identical to asserting
RESET, except:
(1) it does not reset the control fields, ID Index, Hard Reset, Soft Reset, and Chip ID.
(2) it does not reset the PI Controller in the PI block.
0 - Reset not active (default).
1 - Reset is active for the entire chip except the PI block.
3:1
Reserved
Not Used.
0
Soft Reset
Control bit that is identical to Hard Reset except that it does not reset any control registers.
0 - Reset not active (default).
1 - Reset is active for the entire chip except the PI block and all control registers.
4
TABLE 4. CHIP ID
TYPE: GLOBAL: ADDRESS: 0x01
BIT
15:0
FUNCTION
Chip ID
DESCRIPTION
Pair of ASCII character codes for the Chip Identification, where the Chip Identification is a string of 16
ASCII characters. The ChipID field provides access to the characters selected by ID_Index. From the
example in the ID_Index description, reading ChipID with ID_Index = PAIR_0 returns the ASCII code for
“AB”. The ASCII code for “A” is 0x41, and the ASCII code for “B” is 0x42; therefore, ChipID would have
the value 0x4142.
20
ISL5239
TABLE 5. CONTROL
TYPE: INPUT FORMATTER AND INTERPOLATOR, ADDRESS: 0x02
BIT
FUNCTION
DESCRIPTION
15
Reserved
Not used.
14
Clear Status
Set high to clear all status bits, set low (default) to allow the status bits to update.
13:8
Reserved
Internal use only.
7
Reserved
Not used.
Interpolation Factor
The chip upsamples its input data by x1, x2, x4, or x8, and it performs the appropriate filtering to reject
the images created by the upsampling operation. Interpolation by 1 bypasses all the interpolation filters.
000 - x1 (default)
001 - x2
011 - x4
111 - x8
010, 100, 101, 110 Internal Use Only.
3
Reserved
Not used.
2
Input Sequence Type
The type of sample sequence of the Input Formatter and Interpolator input data IIN<17:0>, QIN<17:0>.
0 - PARALLEL. (default) The chip receives I and Q data in parallel through IIN<17:0>, QIN<17:0>The chip
ignores the input signal, ISTRB, in this mode.
1 - SERIAL. The chip receives I and Q data in a serial stream through IIN<17:0>. The serial stream
alternates between I and Q samples, and the chip uses the input signal, ISTRB, to detect which samples
are I and which samples are Q. The chip ignores the input signal QIN<17:0> in this mode.
1
Input Value Type
Allows selection of the input type as 2’s complement or offset binary.
0 - 2’s complement (default) Input data.
1 - Offset Binary Input data.
0
Soft Reset
Soft reset that, when high, resets all input formatter and interpolator circuitry except the control fields.
6:4
TABLE 6. STATUS
TYPE: INPUT FORMATTER AND INTERPOLATOR, ADDRESS: 0x03
BIT
FUNCTION
DESCRIPTION
15:14
Reserved
Not used.
13
Reserved
Internal use only.
12:8
Reserved
Internal use only.
7
HB 3 Q Saturation
When high, bit indicates HB 3 saturated at least one sample in the Q channel since the last clear status
command. Invalid when Interpolation factor < x8.
6
HB 3 I Saturation
When high, bit indicates HB 3 saturated at least one sample in the I channel since the last clear status
command. Invalid when Interpolation factor < x8.
5
HB 2 Q Saturation
When high, bit indicates HB 2 saturated at least one sample in the Q channel since the last clear status
command. Invalid when Interpolation factor < x8.
4
HB 2 I Saturation
When high, bit indicates HB 2 saturated at least one sample in the I channel since the last clear status
command. Invalid when Interpolation factor < x8.
3
HB 1Q Saturation
When high, bit indicates HB 1 saturated at least one sample in the Q channel since the last clear status
command. Invalid when Interpolation factor < x2.
2
HB 1I Saturation
When high, bit indicates HB 1 saturated at least one sample in the I channel since the last clear status
command. Invalid when Interpolation factor < x2.
1
Serial Mode Error
When high, indicated the input formatter and interpolator block performed an illegal operation since the
last clear status command.
0
Serial Mode Error Active
When high, indicates the input formatter and interpolator block is performing an illegal operation. Not
impacted by the clear status command.
21
ISL5239
TABLE 7. CONTROL
TYPE: CAPTURE MEMORY, ADDRESS: 0x04
BIT
15:14
FUNCTION
DESCRIPTION
Reserved
Not used.
13
Address Auto Increment
When set high, automatically increments the memory address after any access operation (read or write).
12
Memory Select
Selects the memory for access.
0 - Input memory (default).
1 - Feedback memory.
Reserved
Not used.
8
Feedback Input Format
Selects the feedback input format.
0 - Parallel (default) uses FB<19:0> as a 20-bit parallel input.
1 - Serial uses FB<0> as the input data bit and FB<1> as the serial sync, sampled at the rising edge of
FBCLK.
7
Reserved
Not used.
6
Processor Trigger
When high, enables the trigger. Low (default) is trigger disabled.
Trigger Select
Selects the trigger mode.
00 - Processor trigger used (default).
01 - Magnitude trigger when min threshold <= magnitude <= maximum threshold.
10 - External trigger.
Reserved
Not used.
Input Memory Data in
Source
Select the input memory dataIn Source.
00 - Interpolator output (default).
01 - Pre-distortion Output.
10 - Pre-distortion Magnitude.
CM Soft Reset
When high, resets all the configuration memory circuitry except the control fields. Low is default.
11:9
5:4
3
2:1
0
TABLE 8. LENGTH OF INPUT MEMORY LOOP
TYPE: CAPTURE MEMORY, ADDRESS: 0x05
BIT
FUNCTION
DESCRIPTION
15:11
Reserved
Not Used
10:0
Input Length
Length of the input memory loop. Specified from 20(1) to 211 (2047). Default = 0. Resets the input
memory address to 0 when input length reached. Actual loop length is this value + 2.
TABLE 9. INPUT MEMORY CAPTURE MODE AND TRIGGER DELAY
TYPE: CAPTURE MEMORY, ADDRESS: 0x06
BIT
15
14:0
FUNCTION
DESCRIPTION
Input Memory Capture
Mode
Selects the active capture mode when the input capture memory is running. Identical to feedback capture
mode except applies to the input memory.
0 - Delay. (default) Defines the beginning of the 2k sample capture window as the trigger point plus the
input trigger delay counter samples.
1 - Advance. Defines the end of the 2k-sample capture window as the trigger point plus the input trigger
delay counter samples.
See control word 0x07, bit 1:0 for mode selection.
Input Trigger Delay
Counter
Offset delay that defines the input memory capture window when control word 0x07, bits 1:0 = 01
(Capture mode).
When control word 0x06, bit 15 is set to 0, delay mode, values selectable from 20 to 215 (0...32768).
When control word 0x06, bit 15 is set to 1, advance mode, value selectable from 20 to 211 (0...2047).
22
ISL5239
TABLE 10. OPERATING MODES
TYPE: CAPTURE MEMORY, ADDRESS: 0x07
BIT
15:5
4
FUNCTION
DESCRIPTION
Reserved
Not used.
Feedback Memory Mode Selects the feedback memory operating mode as
0 - Idle. (default) Memory not operating.
1 - Capture. Memory is capturing data in accordance with the mode and trigger settings specified in
control word 0x08.
3:2
Reserved
Not used.
1:0
Input Memory Mode
Selects the capture memory operating mode as
00 - Idle. (default) Memory not operating.
01 - Capture. Memory is capturing data in accordance with the mode and trigger settings specified in
control word 0x06.
10 - Loop. Input memory plays back data in a continuous loop to provide stimulus.
11 - Single. Input memory plays back data in a one pass through its contents to provide stimulus.
TABLE 11. FEEDBACK MEMORY CATPURE MODE AND TRIGGER DELAY
TYPE: CAPTURE MEMORY, ADDRESS: 0x08
BIT
FUNCTION
15
Feedback Memory
Capture Mode
Selects the active capture mode when the feedback capture memory is running. Identical to input capture
mode except applies to the feedback memory.
0 - Delay. (default) Defines the beginning of the 1k sample capture window as the trigger point plus the
feedback trigger delay counter samples.
1 - Advance. Defines the end of the 1k-sample capture window as the trigger point plus the feedback
trigger delay counter samples.
See control word 0x07, bit 4 for mode selection
Feedback Trigger Delay
Counter
Offset delay that defines the feedback memory capture window when control word 0x07, bits 4 = 1
(Capture mode)
When control word 0x08, bit 15 is set to 0, delay mode, values selectable from 20 to 215 (0...32767)
When control word 0x08, bit 15 is set to 1, advance mode, value selectable from 20 to 210 (0...1023)
14:0
DESCRIPTION
TABLE 12. MAGNITUDE THRESHOLD MINIMUM VALUE
TYPE: CAPTURE MEMORY, ADDRESS: 0x09
BIT
15:0
FUNCTION
Magnitude Threshold
Minimum
DESCRIPTION
Default = 0. Value selectable from 20 to 216 (0...65535). Magnitude-based trigger is generated when the
magnitude value is greater than or equal to this value and less than or equal to the value in control word
0x0a.
TABLE 13. MAGNITUDE THRESHOLD MAXIMUM VALUE
TYPE: CAPTURE MEMORY, ADDRESS: 0x0a
BIT
15:0
FUNCTION
Magnitude Threshold
Maximum
DESCRIPTION
Default = 0. Value selectable from 20 to 216 (0...65535). Magnitude-based trigger is generated when the
magnitude value is less than or equal to this value and greater than or equal to the value in control word
0x09
TABLE 14. MEMORY ADDRESS
TYPE: CAPTURE MEMORY, ADDRESS: 0x0b
BIT
FUNCTION
DESCRIPTION
15:11
Reserved
Not used.
10:0
Memory Address
Index into memory value. Default = 0. Selectable from 20 to 211 (0...2047).
23
ISL5239
TABLE 15. MEMORY DATA LSW
TYPE: CAPTURE MEMORY, ADDRESS: 0x0c
BIT
15:0
FUNCTION
Memory Data <15:0>
DESCRIPTION
Lower 16 bits of capture memory data word.
TABLE 16. MEMORY DATA MSW
TYPE: CAPTURE MEMORY, ADDRESS: 0x0d
BIT
15:0
FUNCTION
Memory Data <31:16>
DESCRIPTION
Higher 16 bits of capture memory data word. Writing to this address triggers the write to the memory and
increments the address counter when address auto increment, control word 0x04, bit 13 is set. Must write
control word 0x0c first, to load the data values into memory.
TABLE 17. INPUT MEMORY STATUS
TYPE: CAPTURE MEMORY, ADDRESS: 0x0e
BIT
FUNCTION
DESCRIPTION
15:14
Reserved
Not used.
13:12
Input Capture Status
Read only register with status defined as:
00 - Idle, Memory access OK.
01 - Armed. Capture memory waiting for trigger.
10 - Loading. Capture memory in load mode.
11 - Send. Memory sends data to downstream modules.
10:0
Input Trigger Position
Read only register which records memory location of input trigger point. 20 to 211 (0...2047).
TABLE 18. FEEDBACK MEMORY STATUS
TYPE: CAPTURE MEMORY, ADDRESS: 0x0f
BIT
FUNCTION
DESCRIPTION
15:14
Reserved
Not used.
13:12
Feedback Capture Status Read only register with status defined as:
00 - Idle, Memory access OK.
01 - Armed. Capture memory waiting for trigger.
10 - Loading. Capture memory in load mode.
10
Reserved
Not used.
9:0
Feedback Trigger
Position
Read only register which records memory location of feedback trigger point. 20 to 210 (0...1023).
TABLE 19. CONTROL
TYPE: PRE-DISTORTER, ADDRESS: 0x10
BIT
15:3
FUNCTION
DESCRIPTION
Reserved
Not used.
2
Test
Selects use of test inputs
0 - Off. IIN<17:0>, QIN<17:0> in use for input stream.
1 - On. Use capture memory output for pre-Distorter input. Note: Test inputs are 16-bits wide and are MSB
justified onto the pre-distorter 20-bit inputs by setting the four LSB’s to zero.
1
Bypass
Disables processing and allows input data to flow to output without any pre-distorter modification.
0 - Pre-distorter is active and processing.
1 - Pre-distorter is bypassed.
0
Reset
Software generated logic reset, which when high, resets the pre-distorter circuitry. Low is default.
24
ISL5239
TABLE 20. MAGNITUDE FUNCTION CONTROL
TYPE: PRE-DISTORTER, ADDRESS: 0x11
BIT
FUNCTION
DESCRIPTION
15:14
Reserved
Not used
13:12
Magnitude Function
Select
Selects the magnitude calculation function as:
00 - Log. Log base 2 of magnitude squared computed as log2(I2 + Q2)
01 - Linear. Linear magnitude computed as sqrt (I2 + Q2)
10 - Power. Magnitude squared computed as (I2 + Q2)
11:0
Address Offset
Linear offset of magnitude function when calculating LUT address (e.g. power backoff) Selectable from
(-1024...1024) in increments of 2-1. Note: Setting the LSB of this value permits rounding of the resulting
address. Clearing the LSB causes truncation. (0xFFFFF --> 0x00000 maps to -1024 to 0, and 0x00001 -> 0x7FFFF maps to 0.5 to 1023.5).
TABLE 21. I - MAGNITUDE FUNCTION SCALE FACTOR
TYPE: PRE-DISTORTER, ADDRESS: 0x12
BIT
FUNCTION
DESCRIPTION
15:13
Reserved
Not Used.
12:0
Address Scale
Linear scale of magnitude function when calculating LUT address (e.g. db/LSB) Selectable from (0.(64increment)), in increments of 2-7.
TABLE 22. Q - LOOK-UP TABLE CONTROL
TYPE: PRE-DISTORTER, ADDRESS: 0x13
BIT
15:14
FUNCTION
DESCRIPTION
Reserved
Not Used.
13
Active LUT
Selects which ping pong LUT is currently in use. The opposite LUT shall be accessible through the
processor interface.
0 - Use LUT 0, access LUT 1.
1 - Use LUT 1, access LUT 0.
12
LUT Address Auto
Increment
Set high to automatically increment LUT address after any access operation (read/write). Default is low,
not auto increment.
Reserved
Not used.
LUT Address
Address for index into LUT. Default = 0, pointer to next LUT location.
11:10
9:0
TABLE 23. LOOK-UP TABLE DELTA IMAGINARY DATA
TYPE: PRE-DISTORTER, ADDRESS: 0x14
BIT
FUNCTION
DESCRIPTION
15:14
Reserved
Not used.
13:0
LUT Data Delta Q
Delta imaginary Data written to or read back from LUT. Delta Q controls memory effect. Selectable as (0.125...(0.125-increment)) in increments of 2-16. Default = 0.
TABLE 24. LOOK-UP TABLE DELTA REAL DATA
TYPE: PRE-DISTORTER, ADDRESS: 0x15
BIT
FUNCTION
DESCRIPTION
15:14
Reserved
Not used.
13:0
LUT Data Delta I
Delta real data written to or read back from LUT. Delta I controls memory effect. Selectable as (0.125...(0.125-increment)) in increments of 2-16. Default = 0.
TABLE 25. LOOK-UP TABLE IMAGINARY DATA
TYPE: PRE-DISTORTER, ADDRESS: 0x16
BIT
15:0
FUNCTION
LUT Data Q
DESCRIPTION
Imaginary distortion data written to or read back from LUT. Selectable as (-0.5...(0.5-increment)) in
increments of 2-16. Default = 0.
25
ISL5239
TABLE 26. LOOK-UP TABLE REAL DATA
TYPE: PRE-DISTORTER, ADDRESS 0x17
BIT
15:0
FUNCTION
LUT Data I
DESCRIPTION
Real distortion data written to or read back from LUT. Selectable as (-0.5...(0.5-increment)) in increments
of 2-16. Default = 0.
TABLE 27. MEMORY EFFECT CONTROL
TYPE: PRE-DISTORTER, ADDRESS: 0x18
BIT
15:13
FUNCTION
DESCRIPTION
Reserved
Not used.
Serial Output Enable
Set to high to enable the external serial interface output pins. Default is low, disabled.
Reserved
Not used
Serial Input Enable
Set to high to enable the external serial interface input pin SERIN data to override the processor settings.
Default is low, disabled, processor settings over-ride serial inputs.
7:6
Reserved
Not used.
5:4
Power Integrator Period
Select the number of samples in the power integrate/dump operation. Also controls the SERCLK
frequency.
00 - 128 samples, SERCLK runs at CLK/4.
01 - 64 samples, SERCLK runs at CLK/2.
10 - 32 samples, SERCLK runs at CLK.
3:1
Reserved
Not used.
Thermal Coefficient B
Set to high to select A2, low to select B (default).
12
11:9
8
0
TABLE 28. MEMORY EFFECT COEFFICIENT A
TYPE: PRE-DISTORTER, ADDRESS: 0x19
BIT
15:0
FUNCTION
DESCRIPTION
Coefficient A for memory effect selectable from (-1.0...(1-increment)) in increments of 2-15. If control word
0x18, bit 8 high, reading this control word returns the value from SERIN.
Thermal Coef. A
TABLE 29. MEMORY EFFECT COEFFICIENT B
TYPE: PRE-DISTORTER, ADDRESS: 0x1a
BIT
15:0
FUNCTION
DESCRIPTION
Coefficient B for memory effect selectable from (-1.0...(1-increment)) in increments of 2-15. If control word
0x18, bit 8 high, reading this control word returns the value from SERIN.
Thermal Coef. B
TABLE 30. MEMORY EFFECT POWER INTEGRATOR LSW
TYPE: PRE-DISTORTER, ADDRESS: 0x1b
BIT
FUNCTION
15:0
Power Integrator <15:0>
DESCRIPTION
Power integrator LSW.
TABLE 31. MEMORY EFFECT POWER INTEGRATOR MSW
TYPE: PRE-DISTORTER, ADDRESS: 0x1c
BIT
15:0
FUNCTION
DESCRIPTION
Power Integrator <31:16> Power integrator MSW. The Power Integrator [31:0] forms an unsigned fixed point number with 9 integer
and 23 fractional bits (u9.23).
26
ISL5239
TABLE 32. STATUS
TYPE: PRE-DISTORTER, ADDRESS: 0x1d
BIT
FUNCTION
DESCRIPTION
15:1
Reserved
Not used.
0
Reserved
Internal use only.
TABLE 33. CONTROL
TYPE: IF CONVERTER, ADDRESS: 0x20
BIT
15:14
FUNCTION
Reserved
DESCRIPTION
Not used.
13:12
Reserved
Internal use only.
11:9
Reserved
Not used.
8
Reserved
Internal use only.
7:6
Reserved
Not used.
5:4
IF Conv. Mode
Selects the operational mode of the IF converter as:
00 - Disabled. Default mode which zeroes data into pipeline.
01 - Real x1. Real I outputs only, shifted by Fs/4.
10 - Real x2. Real samples output shifted by Fs/4. The sample on the I port is the first, earlier, sample of
the pair.
11 - Complex. Complex outputs shifted by Fs/4.
3
Reserved
Not used.
2
IF Conv. Status Clear
When set high, clears the IF Conv. status bits. Set low for normal operation and to allow the status bits
to update.
1
IF Conv. Bypass
When set high (default), bypasses the IF conv. stage. Set low for normal processing.
0
IF Conv. Reset
When set high, resets the IF conv. state machine. Set low (default) for normal operation.
TABLE 34. STATUS
TYPE: IF CONVERTER, ADDRESS: 0x21
BIT
15:4
3:2
FUNCTION
DESCRIPTION
Reserved
Not used.
Reserved
Internal use only.
1
I Channel Saturation
When high, indicates the IF conv. saturated at least one sample since the last control word 0x20, bit 2
command.
0
Q Channel Saturation
When high, indicates the IF conv. saturated at least one sample since the last control word 0x20, bit 2
command.
TABLE 35. CONTROL
TYPE: CORRECTION FILTER, ADDRESS: 0x28
BIT
FUNCTION
DESCRIPTION
15
Reserved
Not used.
14:12
Reserved
Internal use only.
11:10
Reserved
Not used.
9:8
Reserved
Internal use only.
7:5
Reserved
Not used.
4
Address Auto Increment
Set high to automatically increment coef/address after any access operation (read/write). Low (default) is
not auto increment.
3
Real Pipeline Select
Set high to configure the filter to process muxed real data, with the values arriving on the IIN<17:0> port
in serial fashion with I following Q. Set low (default) for complex operation.
2
Clear Status
Set high to clear all status bits, low for normal status bit updates.
1
Bypass
Set high (default) to bypass the correction filter, low to enable processing.
0
Reserved
Not used.
27
ISL5239
TABLE 36. COEFFICIENT INDEX
TYPE: CORRECTION FILTER, ADDRESS: 0x29
BIT
FUNCTION
DESCRIPTION
15:8
Reserved
Not used.
7:0
Coefficient Address
Pointer to current LUT location. Default is 0. 0x00-0x7F are I coefficients, 0x80-0xff are Q coefficients.
Master register to slave register transfer occurs after the processor interface last write to the Q
coefficient. The circuit uses the slave registers. All reads are from the slave register values. There are
13 each I and Q coefficients.
TABLE 37. COEFFICIENT VALUE
TYPE: CORRECTION FILTER, ADDRESS: 0x2a
BIT
15:0
FUNCTION
DESCRIPTION
Coefficient data access. Default = 0, non centered coef. Default = 1 - 2(1-15) centered coef.
Coefficient Data
TABLE 38. STATUS
TYPE: CORRECTION FILTER, ADDRESS: 0x2b
BIT
FUNCTION
DESCRIPTION
15:4
Reserved
Not used.
3:2
Reserved
Internal use only.
1
I Channel Saturation
When high indicates the correction filter saturated at least one sample since the last control word 0x28,
bit 2 command.
0
Q Channel Saturation
When high indicates the correction filter saturated at least one sample since the last control word 0x28,
bit 2 command.
TABLE 39. CONTROL
TYPE: OUTPUT DATA CONDITIONER, ADDRESS: 0x30
BIT
FUNCTION
DESCRIPTION
15:8
Reserved
Not used.
8
Reserved
Internal use only.
Output Word Width
Select the width of the output data bus IOUT<17:0> and QOUT<17:0>.
0000 - 8 bits
0001 - 9 bits
0010 - 10 bits
0011 - 11 bits
0100 - 12 bits
0101 - 13 bits
0110 - 14 bits
0111 - 15 bits
1000 - 16 bits
1001 - 17 bits
1010 - 18 bits (default)
3
Output Format
Set high to select offset binary, low to select 2’s compliment.
2
Status clear
Set high to clear all status bits, low to enable bits to be active.
1
Bypass
Set high (default) to bypass, low to enable output processing.
0
Reserved
Not used.
7:4
28
ISL5239
TABLE 40. I-to-I (HM) COEFFICIENT
TYPE: OUTPUT DATA CONDITIONER, ADDRESS: 0x31
BIT
15:0
FUNCTION
hm Coefficient
DESCRIPTION
I-to-I (hm) coefficient values loaded from the master registers to the slave registers when the user writes
the last coefficient register in control word 0x38. The slave registers are used in the datapath. All reads
return slave register values. Default 1-2(1-15).
TABLE 41. Q-to-I (KM) COEFFICIENT
TYPE: OUTPUT DATA CONDITIONER, ADDRESS: 0x32
BIT
15:0
FUNCTION
km Coefficient
DESCRIPTION
Q-to-I (km) master register. Default 0.
TABLE 42. I-to-Q (LM) COEFFICIENT
TYPE: OUTPUT DATA CONDITIONER, ADDRESS: 0x33
BIT
15:0
FUNCTION
lm Coefficient
DESCRIPTION
I-to-Q (lm) master register. Default 0.
TABLE 43. Q-toQ (GM) COEFFICIENT
TYPE: OUTPUT DATA CONDITIONER, ADDRESS: 0x34
BIT
15:0
FUNCTION
DESCRIPTION
Q-to-Q (Gm) master register. Default 1-2(1-15)
Gm Coefficient
TABLE 44. I CHANNEL DC OFFSET MSW
TYPE: OUTPUT DATA CONDITIONER, ADDRESS: 0x35
BIT
FUNCTION
DESCRIPTION
15:4
Reserved
Not used.
3:0
DC I Offset <19:16>
I DC offset master register containing the upper four bits of the I DC offset.
TABLE 45. I CHANNEL DC OFFSET LSW
TYPE: OUTPUT DATA CONDITIONER, ADDRESS: 0x36
BIT
FUNCTION
15:0
DC I Offset <15:0>
DESCRIPTION
I DC offset master register containing the lower 16 bits of the I DC offset.
TABLE 46. Q CHANNEL DC OFFSET MSW
TYPE: OUTPUT DATA CONDITIONER, ADDRESS: 0x37
BIT
FUNCTION
DESCRIPTION
15:4
Reserved
Not used.
3:0
DC Q Offset <19:16>
Q DC offset master register containing the upper four bits of the Q DC offset.
TABLE 47. Q CHANNEL DC OFFSET LSW
TYPE: OUTPUT DATA CONDITIONER, ADDRESS: 0x38
BIT
15:0
FUNCTION
DC Q Offset <15:0>
29
DESCRIPTION
Q DC offset master register containing the lower 16 bits of the Q DC offset.
ISL5239
TABLE 48. STATUS
TYPE: OUTPUT DATA CONDITIONER, ADDRESS: 0x39
BIT
FUNCTION
DESCRIPTION
15:4
Reserved
Not used.
3:2
Reserved
Internal use only.
1
I Channel Status
When high indicates that the output data conditioner saturated at least one sample since the last control
word 0x30, bit 2 command.
0
Q Channel Status
When high indicates that the output data conditioner saturated at least one sample since the last control
word 0x30, bit 2 command.
30
ISL5239
Plastic Ball Grid Array Packages (BGA)
o
A
A1 CORNER
V196.15x15
D
196 BALL PLASTIC BALL GRID ARRAY PACKAGE
INCHES
A1 CORNER I.D.
E
B
TOP VIEW
0.15
M C A B
0.006
0.08
M C
0.003
b
A1
CORNER
D1
MILLIMETERS
SYMBOL
MIN
MAX
MIN
MAX
NOTES
A
-
0.059
-
1.50
-
A1
0.012
0.016
0.31
0.41
-
A2
0.037
0.044
0.93
1.11
-
b
0.016
0.020
0.41
0.51
7
D/E
0.587
0.595
14.90
15.10
-
D1/E1
0.508
0.516
12.90
13.10
-
N
196
196
e
0.039 BSC
1.0 BSC
-
MD/ME
14 x 14
14 x 14
3
bbb
0.004
0.10
-
aaa
0.005
0.12
-
14 13 12 11 10 9 8 7 6 5 4 3 2 1
A1
A
CORNER I.D.
B
C
D
E
F
G
E1
H
J
K
L
M
N
P
S
A
e
S
A
ALL ROWS AND COLUMNS
-
Rev. 1 12/00
NOTES:
1. Controlling dimension: MILLIMETER. Converted inch
dimensions are not necessarily exact.
2. Dimensioning and tolerancing conform to ASME Y14.5M-1994.
3. “MD” and “ME” are the maximum ball matrix size for the “D”
and “E” dimensions, respectively.
4. “N” is the maximum number of balls for the specific array size.
5. Primary datum C and seating plane are defined by the spherical crowns of the contact balls.
6. Dimension “A” includes standoff height “A1”, package body
thickness and lid or cap height “A2”.
7. Dimension “b” is measured at the maximum ball diameter,
parallel to the primary datum C.
8. Pin “A1” is marked on the top and bottom sides adjacent to A1.
BOTTOM VIEW
A1
A2
bbb C
9. “S” is measured with respect to datum’s A and B and defines
the position of the solder balls nearest to package centerlines. When there is an even number of balls in the outer row
the value is “S” = e/2.
aaa C
C
A
SEATING PLANE
SIDE VIEW
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Intersil Corporation’s quality certifications can be viewed at website www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice.
Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No
license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see web site www.intersil.com
31