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GS1532 HD-LINX® II
Multi-Rate Serializer with ClockCleaner™
GS1532 Data Sheet
21498 - 8 February 2007 1 of 51
Key Features
• SMPTE 292M and SMPTE 259M-C compliant
scrambling and NRZ → NRZI encoding (with
bypass)
• DVB-ASI sync word insertion and 8b/10b encoding
• User selectable additional processing features
including:
• CRC, ANC data checksum, and line number
calculation and insertion
• TRS and EDH packet generation and insertion
• illegal code remapping
• Internal flywheel for noise immune TRS generation
• 20-bit / 10-bit CMOS parallel input data bus
• 148.5MHz / 74.25MHz / 27MHz / 13.5MHz parallel
digital input
• Automatic standards detection and indication
• Pb-free and RoHS Compliant
• 1.8V core power supply and 3.3V charge pump
power supply
• 3.3V digital I/O supply
• JTAG test interface
• Small footprint compatible with GS1560A, GS1561,
GS9060, and GS9062
Applications
• SMPTE 292M Serial Digital Interfaces
• SMPTE 259M-C Serial Digital Interfaces
• DVB-ASI Serial Digital Interfaces
Description
The GS1532 is a multi-standard serializer with an
integrated cable driver. When used in conjunction with
the GO1555/GO1525* Voltage Controlled Oscillator, a
transmit solution can be realized for HD-SDI, SD-SDI
and DVB-ASI applications.
The device features an internal PLL, which can be
configured for loop bandwidth as narrow as 100kHz.
Thus the GS1532 can tolerate in excess of 300ps jitter
on the input PCLK and still provide output jitter well
within SMPTE specification. Connect the output clocks
from Gennum’s GS4911 clock generator directly to the
GS1532’s PCLK input and configure the GS1532’s loop
bandwidth accordingly.
In addition to serializing the input, the GS1532 performs
NRZ-to-NRZI encoding and scrambling as per SMPTE
292M/259M-C when operating in SMPTE mode. When
operating in DVB-ASI mode, the device will insert K28.5
sync characters and 8b/10b encode the data prior to
serialization.
Parallel data inputs are provided for 10-bit multiplexed
or 20-bit demultiplexed formats at both HD and SD
signal rates. An appropriate parallel clock input signal is
also required.
The integrated cable driver features an output mute on
loss of parallel clock, high impedance mode, adjustable
signal swing, and automatic dual slew rate selection
depending on HD/SD operational requirements.
The GS1532 also includes a range of data processing
functions including automatic standards detection and
EDH support. The device can also insert TRS signals,
calculate and insert line numbers and CRC’s, re-map
illegal code words and insert SMPTE 352M payload
identifier packets. All processing features are optional
and may be enabled/disabled via external control pin(s)
and/or host interface programming.
The GS1532 is Pb-free, and the encapsulation
compound does not contain halogenated flame
retardant.
This component and all homogeneous subcomponents
are RoHS compliant.
*For new designs use GO1555
GS1532 Data Sheet
21498 - 8 February 2007 2 of 51
Functional Block Diagram
GS1532 Functional Block Diagram
SDO
SDO
SDO_EN/D
IS
RSET
CP_CAP
H
V
F
D
IN[19:0]
IOPROC_EN/DIS
DVB_ASI
I/O
Buffer
&
demux
SMPTE
352M
generation
TRS insertion,
Line number
insertion,
CRC insertion,
data blank, code-
re-map and
flywheel
dvb-asi
bypass
RESET_TRST
Reset
HOST Interface /
JTAG test
CS_TMS
SCLK_TCK
SDIN_TDI
SDOUT_TD
O
JTAG/HOST
LOCKED
V
CO
VCO
LF
LB_CONT
VCO_VCC
VCO_GND
SD/HD
20bit/10bit
DVB-ASI sync
word insert &
8b/10b encode
EDH
generation
& SMPTE
scramble
PCLK
BLANK
DETECT_TRS
SMPTE_BYPASS
Phase detector, charge pump,
VCO control & power supply
P -> S
sd/hd
ClockCleaner™
GS1532 Data Sheet
21498 - 8 February 2007 3 of 51
Contents
Key Features.................................................................................................................1
Applications...................................................................................................................1
Description ....................................................................................................................1
Functional Block Diagram .............................................................................................2
1. Pin Out .....................................................................................................................5
1.1 Pin Assignment ...............................................................................................5
1.2 Pin Descriptions ..............................................................................................6
2. Electrical Characteristics........................................................................................14
2.1 Absolute Maximum Ratings ..........................................................................14
2.2 DC Electrical Characteristics ........................................................................14
2.3 AC Electrical Characteristics.........................................................................16
2.4 Solder Reflow Profiles...................................................................................18
2.5 Input/Output Circuits .....................................................................................19
2.6 Host Interface Maps......................................................................................21
2.6.1 Host Interface Map (Read Only Registers).........................................22
2.6.2 Host Interface Map (R/W Configurable Registers) .............................23
3. Detailed Description ...............................................................................................24
3.1 Functional Overview .....................................................................................24
3.2 Parallel Data Inputs.......................................................................................24
3.2.1 Parallel Input in SMPTE Mode............................................................25
3.2.2 Parallel Input in DVB-ASI Mode..........................................................25
3.2.3 Parallel Input in Data-Through Mode..................................................25
3.2.4 Parallel Input Clock (PCLK) ................................................................26
3.3 SMPTE Mode................................................................................................27
3.3.1 Internal Flywheel.................................................................................27
3.3.2 HVF Timing Signal Extraction.............................................................27
3.4 DVB-ASI mode..............................................................................................29
3.4.1 Control Signal Inputs ..........................................................................29
3.5 Data-Through Mode......................................................................................29
3.6 Additional Processing Functions...................................................................30
3.6.1 Input Data Blank .................................................................................30
3.6.2 Automatic Video Standard Detection..................................................30
3.6.3 Packet Generation and Insertion ........................................................32
3.7 Parallel-To-Serial Conversion .......................................................................39
3.8 Serial Digital Data PLL..................................................................................40
3.8.1 External VCO......................................................................................40
3.8.2 Lock Detect Output .............................................................................40
3.8.3 Loop Bandwidth Adjustment ...............................................................41
3.9 Serial Digital Output ......................................................................................41
3.9.1 Output Swing ......................................................................................42
GS1532 Data Sheet
21498 - 8 February 2007 4 of 51
3.9.2 Serial Digital Output Mute...................................................................42
3.10 GSPI Host Interface ....................................................................................42
3.10.1 Command Word Description.............................................................43
3.10.2 Data Read and Write Timing ............................................................44
3.10.3 Configuration and Status Registers ..................................................45
3.11 JTAG...........................................................................................................45
3.12 Device Power Up ........................................................................................47
3.13 Device Reset...............................................................................................47
4. Application Reference Design................................................................................48
4.1 Typical Application Circuit.............................................................................48
5. References & Relevant Standards.........................................................................49
6. Package & Ordering Information............................................................................50
6.1 Package Dimensions ....................................................................................50
6.2 Packaging Data.............................................................................................51
6.3 Ordering Information .....................................................................................51
7. Revision History .....................................................................................................52
GS1532 Data Sheet
21498 - 8 February 2007 5 of 51
1. Pin Out
1.1 Pin Assignment
DVB_ASI
IOPROC_EN/DIS
SDOUT_TDO
SDIN_TDI
SCLK_TCK
F
V
H
DIN0
DIN1
IO_GND
BLANK
CORE_GND
CORE_VDD
JTAG/HOST
CS_TMS
RESET_TRST
VCO_VCC
CP_GND
VCO_GND
LF
VCO
LOCKED
CP_CAP
CORE_GND
CORE_VDD
DIN19
DIN18
IO_VDD
PCLK
LB_CONT
VCO
DETECT_TRS
CP_VDD
PD_VDD
PD_GND
20bit/10bit
SMPTE_BYPASS
RSET
DIN17
IO_VDD
DIN2
DIN3
DIN4
DIN5
DIN6
DIN7
DIN8
DIN9
IO_GND
IO_VDD
DIN10
DIN11
DIN12
DIN13
DIN14
DIN15
DIN16
IO_GND
1
80
SD/HD
234567
79
78
77
76
75
74
73
8910 11 12 13 14
72
71
70
69
68
67
66
65
64
63
62
61
15 16 17 18 19 20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
NC
NC
CD_VDD
SDO
SDO
CD_GND
SDO_EN/DIS
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
RSV
NC
NC
GS1532 Data Sheet
21498 - 8 February 2007 6 of 51
1.2 Pin Descriptions
Table 1-1: Pin Descriptions
Pin
Number
Name Timing Type Description
1 CP_VDD – Power Power supply connection for the charge pump. Connect to +3.3V DC
analog.
2 PD_GND – Power Ground connection for the phase detector. Connect to analog GND.
3 PD_VDD – Power Power supply connection for the phase detector. Connect to +1.8V DC
analog.
4, 6-8, 10,
14-17, 31,
65, 66, 70,
71
NC – – No connect.
5 RSV – – Reserved. Connect to Analog GND.
9 DVB_ASI Non
Synchronous
Input CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
When set HIGH in conjunction with SD/HD = HIGH and SMPTE_BYPASS
= LOW, the device will be configured to operate in DVB-ASI mode.
When set LOW, the device will not support the encoding of received
DVB-ASI data.
11 SD/HD Non
Synchronous
Input CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
When set LOW, the device will be configured to transmit signal rates of
1.485Gb/s or 1.485/1.001Gb/s only.
When set HIGH, the device will be configured to transmit signal rates of
270Mb/s only.
12 20bit/10bit Non
Synchronous
Input CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
Used to select the input data bus width in SMPTE or Data-Through
modes. This signal is ignored in DVB-ASI mode.
When set HIGH, the parallel input will be 20-bit demultiplexed data.
When set LOW, the parallel input will be 10-bit multiplexed data.
GS1532 Data Sheet
21498 - 8 February 2007 7 of 51
13 IOPROC_EN/DIS Non
Synchronous
Input CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
Used to enable or disable I/O processing features.
When set HIGH, the following I/O processing features of the device are
enabled:
• EDH Packet Generation and Insertion (SD-only)
• SMPTE 352M Packet Generation and Insertion
• ANC Data Checksum Calculation and Insertion
• Line-based CRC Generation and Insertion (HD-only)
• Line Number Generation and Insertion (HD-only)
• TRS Generation and Insertion
• Illegal Code Remapping
To enable a subset of these features, keep IOPROC_EN/DIS HIGH and
disable the individual feature(s) in the IOPROC_DISABLE register
accessible via the host interface.
When set LOW, the I/O processing features of the device are disabled,
regardless of whether the features are enabled in the IOPROC_DISABLE
register.
18 SMPTE_BYPASS Non
Synchronous
Input CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
When set HIGH in conjunction with DVB_ASI = LOW, the device will be
configured to operate in SMPTE mode. All I/O processing features may be
enabled in this mode.
When set LOW, the device will not support the scrambling or encoding of
received SMPTE data. No I/O processing features will be available.
19 RSET Analog Input Used to set the serial digital output signal amplitude. Connect to CD_VDD
through 281Ω +/- 1% for 800mVp-p single-ended output swing.
20 CD_VDD – Power Power supply connection for the serial digital cable driver. Connect to
+1.8V DC analog.
21 SDO_EN/DIS Non
Synchronous
Input CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
Used to enable or disable the serial digital output stage.
When set LOW, the serial digital output signals SDO and SDO are
disabled and become high impedance.
When set HIGH, the serial digital output signals SDO and SDO are
enabled.
22 CD_GND – Power Ground connection for the serial digital cable driver. Connect to analog
GND.
23, 24 SDO, SDO Analog Output Serial digital output signal operating at 1.485Gb/s, 1.485/1.001Gb/s, or
270Mb/s.
The slew rate of these outputs is automatically controlled to meet SMPTE
292M and 259M specifications according to the setting of the SD/HD pin.
Table 1-1: Pin Descriptions (Continued)
Pin
Number
Name Timing Type Description
GS1532 Data Sheet
21498 - 8 February 2007 8 of 51
25 RESET_TRST Non
Synchronous
Input CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
Used to reset the internal operating conditions to default settings and to
reset the JTAG test sequence.
Host Mode (JTAG/HOST = LOW)
When asserted LOW, all functional blocks will be set to default conditions
and all input and output signals become high
impedance, including the
serial digital outputs SDO and
SDO.
Must be set HIGH for normal device operation.
JTAG Test Mode (JTAG/HOST = HIGH)
When asserted LOW, all functional blocks will be set to default and the
JTAG test sequence will be held in reset.
When set HIGH, normal operation of the JTAG test sequence resumes.
26 JTAG/HOST Non
Synchronous
Input CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
Used to select JTAG Test Mode or Host Interface Mode.
When set HIGH, CS_TMS, SDOUT_TDO, SDI_TDI and SCLK_TCK are
configured for JTAG boundary scan testing.
When set LOW, CS_TMS, SDOUT_TDO, SDI_TDI and SCLK_TCK are
configured as GSPI pins for normal host interface operation.
27 CS_TMS Synchronous
with
SCLK_TCK
Input CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
Chip Select / Test Mode Select
Host Mode (JTAG/HOST = LOW)
CS_TMS operates as the host interface chip select, CS, and is active
LOW.
JTAG Test Mode (JTAG/HOST = HIGH)
CS_TMS operates as the JTAG test mode select, TMS, and is active
HIGH.
NOTE: If the host interface is not being used, tie this pin HIGH.
28 SDOUT_TDO Synchronous
with
SCLK_TCK
Output CONTROL SIGNAL OUTPUT
Signal levels are LVCMOS/LVTTL compatible.
Serial Data Output / Test Data Output
Host Mode (JTAG/HOST = LOW)
SDOUT_TDO operates as the host interface serial output, SDOUT, used
to read status and configuration information from the internal registers of
the device.
JTAG Test Mode (JTAG/HOST = HIGH)
SDOUT_TDO operates as the JTAG test data output, TDO.
Table 1-1: Pin Descriptions (Continued)
Pin
Number
Name Timing Type Description
GS1532 Data Sheet
21498 - 8 February 2007 9 of 51
29 SDIN_TDI Synchronous
with
SCLK_TCK
Input
CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
Serial Data In / Test Data Input
Host Mode (JTAG/HOST = LOW)
SDIN_TDI operates as the host interface serial input, SDIN, used to write
address and configuration information to the internal registers of the
device.
JTAG Test Mode (JTAG/HOST = HIGH)
SDIN_TDI operates as the JTAG test data input, TDI.
NOTE: If the host interface is not being used, tie this pin HIGH.
30 SCLK_TCK Non
Synchronous
Input CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
Serial Data Clock / Test Clock.
Host Mode (JTAG/HOST = LOW)
SCLK_TCK operates as the host interface burst clock, SCLK. Command
and data read/write words are clocked into the device synchronously with
this clock.
JTAG Test Mode (JTAG/HOST = HIGH)
SCLK_TCK operates as the JTAG test clock, TCK.
NOTE: If the host interface is not being used, tie this pin HIGH.
32 BLANK Synchronous
with PCLK
Input CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
Used to enable or disable input data blanking.
When set LOW, the luma and chroma input data is set to the appropriate
blanking levels. Horizontal and vertical ancillary spaces will also be set to
blanking levels.
When set HIGH, the luma and chroma input data pass through the device
unaltered.
33, 68 CORE_GND – Power Ground connection for the digital core logic. Connect to digital GND.
34 F Synchronous
with PCLK
Input CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
Used to indicate the ODD / EVEN field of the video signal when
DETECT_TRS is set LOW. The device will set the F bit in all outgoing TRS
signals for the entire period that the F input signal is HIGH
(IOPROC_EN/DIS must also be HIGH).
The F signal should be set HIGH for the entire period of field 2 and should
be set LOW for all lines in field 1 and for all lines in progressive scan
systems.
The F signal is ignored when DETECT_TRS = HIGH.
Table 1-1: Pin Descriptions (Continued)
Pin
Number
Name Timing Type Description
GS1532 Data Sheet
21498 - 8 February 2007 10 of 51
35 V Synchronous
with PCLK
Input CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
Used to indicate the portion of the video field / frame that is used for
vertical blanking when DETECT_TRS is set LOW. The device will set the
V bit in all outgoing TRS signals for the entire period that the V input signal
is HIGH (IOPROC_EN/DIS must also be HIGH).
The V signal should be set HIGH for the entire vertical blanking period and
should be set LOW for all lines outside of the vertical blanking interval.
The V signal is ignored when DETECT_TRS = HIGH.
36 H Synchronous
with PCLK
Input CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
Used to indicate the portion of the video line containing active video data
when DETECT_TRS is set LOW. The device will set the H bit in all
outgoing TRS signals for the entire period that the H input signal is HIGH
(IOPROC_EN/DIS must also be HIGH).
H signal timing is configurable via the H_CONFIG bit of the
IOPROC_DISABLE register, accessible via the host interface.
Active Line Blanking (H_CONFIG = 0h)
The H signal should be set HIGH for the entire horizontal blanking period,
including the EAV and SAV TRS words, and LOW otherwise. This is the
default setting.
TRS Based Blanking (H_CONFIG = 1h)
The H signal should be set HIGH for the entire horizontal blanking period
as indicated by the H bit in the received TRS ID words, and LOW
otherwise.
37, 64 CORE_VDD – Power Power supply connection for the digital core logic. Connect to +1.8V DC
digital.
Table 1-1: Pin Descriptions (Continued)
Pin
Number
Name Timing Type Description
GS1532 Data Sheet
21498 - 8 February 2007 11 of 51
38, 39,
42-48, 50
DIN[0:9] Synchronous
with PCLK
Input PARALLEL DATA BUS
Signal levels are LVCMOS/LVTTL compatible.
DIN9 is the MSB and DIN0 is the LSB.
HD 20-bit mode
SD/HD = LOW
20bit/10bit = HIGH
Chroma data input in SMPTE mode
SMPTE_BYPASS =HIGH
DVB_ASI = LOW
Data input in Data-Through mode
SMPTE_BYPASS
= LOW
DVB_ASI = LOW
HD 10-bit mode
SD/HD = LOW
20bit/10bit = LOW
High impedance in all modes.
SD 20-bit mode
SD/HD = HIGH
20bit/10bit = HIGH
Chroma data input in SMPTE mode
SMPTE_BYPASS
= HIGH
DVB_ASI = LOW
Data input in Data-Through mode
SMPTE_BYPASS
= LOW
DVB_ASI = LOW
High impedance in DVB-ASI mode
SMPTE_BYPASS
= LOW
DVB_ASI = HIGH
SD 10-bit mode
SD/HD = HIGH
20bit/10bit = LOW
High impedance in all modes.
40, 49, 60 IO_GND – Power Ground connection for digital I/O buffers. Connect to digital GND.
41, 53, 61 IO_VDD – Power Power supply connection for digital I/O buffers. Connect to +3.3V DC
digital.
Table 1-1: Pin Descriptions (Continued)
Pin
Number
Name Timing Type Description
GS1532 Data Sheet
21498 - 8 February 2007 12 of 51
51, 52,
54-59, 62,
63
DIN[10:19] Synchronous
with PCLK
Input PARALLEL DATA BUS
Signal levels are LVCMOS/LVTTL compatible.
DIN19 is the MSB and DIN10 is the LSB.
HD 20-bit mode
SD/HD = LOW
20bit/10bit = HIGH
Luma data input in SMPTE mode
SMPTE_BYPASS = HIGH
DVB_ASI = LOW
Data input in Data-Through mode
SMPTE_BYPASS = LOW
DVB_ASI = LOW
HD 10-bit mode
SD/HD = LOW
20bit/10bit = LOW
Multiplexed Luma and Chroma data input
in SMPTE mode
SMPTE_BYPASS = HIGH
DVB_ASI = LOW
Data input in Data-Through mode
SMPTE_BYPASS = LOW
DVB_ASI = LOW
SD 20-bit mode
SD/HD = HIGH
20bit/10bit = HIGH
Luma data input in SMPTE mode
SMPTE_BYPASS = HIGH
DVB_ASI = LOW
Data input in Data-Through mode
SMPTE_BYPASS = LOW
DVB_ASI = LOW
DVB-ASI data input in DVB-ASI mode
SMPTE_BYPASS = LOW
DVB_ASI = HIGH
SD 10-bit mode
SD/HD = HIGH
20bit/10bit = LOW
Multiplexed Luma and Chroma data input
in SMPTE mode
SMPTE_BYPASS
= HIGH
DVB_ASI = LOW
Data input in data through mode
SMPTE_BYPASS
= LOW
DVB_ASI = LOW
DVB-ASI data input in DVB-ASI mode
SMPTE_BYPASS
= LOW
DVB_ASI = HIGH
67 DETECT_TRS Non
Synchronous
Input CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
Used to select the timing mode of the device.
When set HIGH, the device will lock the internal flywheel to the embedded
TRS timing signals in the parallel input data.
When set LOW, the device will lock the internal flywheel to the externally
supplied H, V, and F input signals.
Table 1-1: Pin Descriptions (Continued)
Pin
Number
Name Timing Type Description
GS1532 Data Sheet
21498 - 8 February 2007 13 of 51
69 PCLK – Input PARALLEL DATA BUS CLOCK
Signal levels are LVCMOS/LVTTL compatible.
HD 20-bit mode PCLK = 74.25MHz or 74.25/1.001MHz
HD 10-bit mode PCLK = 148.5MHz or 148.5/1.001MHz
SD 20-bit mode PCLK = 13.5MHz
SD 10-bit mode PCLK = 27MHz
72 LOCKED Synchronous
with PCLK
Output STATUS SIGNAL OUTPUT
Signal levels are LVCMOS / LVTTL compatible.
The LOCKED signal will be HIGH whenever the device has correctly
received and locked to SMPTE compliant data in SMPTE mode or
DVB-ASI compliant data in DVB-ASI mode, or when the device has
achieved lock in Data-Through mode.
It will be LOW otherwise.
73, 74 VCO, VCO Analog Input Differential inputs for the external VCO reference signal. For single ended
devices such as the GO1555/GO1525*, VCO should be AC coupled to
VCO_GND.
VCO is nominally 1.485GHz.
*For new designs use GO1555
75 VCO_GND – Output
Power
Ground reference for the external voltage controlled oscillator. Connect to
pins 2, 4, 6, and 8 of the GO1555/GO1525*. This pin is an output.
Should be isolated from all other grounds.
*For new designs use GO1555
76 VCO_VCC – Output
Power
Power supply for the external voltage controlled oscillator. Connect to pin
7 of the GO1555/GO1525*. This pin is an output.
Should be isolated from all other power supplies.
*For new designs use GO1555
77 LF Analog Output Control voltage to external voltage controlled oscillator. Nominally +1.25V
DC.
78 CP_CAP Analog Input PLL lock time constant capacitor connection. Normally connected to
VCO_GND through 2.2nF.
79 LB_CONT Analog Input Control voltage to set the loop bandwidth of the integrated reclocker.
Normally connected to VCO_VDD through 15kΩ.
80 CP_GND – Power Ground connection for the charge pump. Connect to analog GND.
Table 1-1: Pin Descriptions (Continued)
Pin
Number
Name Timing Type Description
GS1532 Data Sheet
21498 - 8 February 2007 14 of 51
2. Electrical Characteristics
2.1 Absolute Maximum Ratings
2.2 DC Electrical Characteristics
Parameter Value/Units
Supply Voltage Core -0.3V to +2.1V
Supply Voltage I/O -0.3V to +4.6V
Input Voltage Range (any input) -2.0V to + 5.25V
Ambient Operating Temperature -20°C < TA < 85°C
Storage Temperature -40°C < TSTG < 125°C
Lead Temperature (soldering, 10 sec) 230°C
ESD Protection On All Pins 1kV
NOTES:
1. See reflow solder profiles (Solder Reflow Profiles on page 18)
2. MIL STD 883 ESD protection applied to all pins on the device.
Table 2-1: DC Electrical Characteristics
TA = 0°C to 70°C, unless otherwise specified.
Parameter Symbol Conditions Min Typ Max Units Test
Levels
Notes
System
Operation Temperature Range TA–0–70°C–1
Digital Core Supply Voltage CORE_VDD – 1.65 1.8 1.95 V 1 1
Digital I/O Supply Voltage IO_VDD – 3.0 3.3 3.6 V 1 1
Charge Pump Supply Voltage CP_VDD – 3.0 3.3 3.6 V 1 1
Phase Detector Supply
Voltage
PD_VDD – 1.65 1.8 1.95 V 1 1
Input Buffer Supply Voltage BUFF_VDD – 1.65 1.8 1.95 V 1 1
Cable Driver Supply Voltage CD_VDD – 1.71 1.8 1.89 V 1 1
External VCO Supply Voltage
Output
VCO_VCC – 2.25 2.50 2.75 V 1 –
+1.8V Supply Current I1V8 –––245mA14
+3.3V Supply Current I3V3 –––45mA1–
GS1532 Data Sheet
21498 - 8 February 2007 15 of 51
To ta l D e v i c e P ow e r P D–––590mW54
ESD Protection on all Pins – – 1 – – kV – 2
Digital I/O
Input Logic LOW VIL ––– 0.8V1–
Input Logic HIGH VIH – 2.1–– V 1 –
Output Logic LOW VOL 8mA – 0.2 0.4 V 1 –
Output Logic HIGH VOH 8mA IO_VDD
- 0.4
–– V 1 –
Input
RSET Voltage VRSET RSET=281Ω0.54 0.6 0.66 V 1 3
Output
Output Common Mode Voltage VCMOUT 75Ω load,
RSET=281Ω,
SD and HD
0.8 1.0 1.2 V 1 –
TEST LEVELS
1. Production test at room temperature and nominal supply voltage with
guardbands for supply and temperature ranges.
2. Production test at room temperature and nominal supply voltage with
guardbands for supply and temperature ranges using correlated test.
3. Production test at room temperature and nominal supply voltage.
4. QA sample test.
5. Calculated result based on Level 1, 2, or 3.
6. Not tested. Guaranteed by design simulations.
7. Not tested. Based on characterization of nominal parts.
8. Not tested. Based on existing design/characterization data of similar
product.
9. Indirect test.
NOTES
1. All DC and AC electrical parameters within specification.
2. MIL STD 883 ESD protection will be applied to all pins on the
device.
3. Set by the value of the RSET resistor.
4. SDO outputs enabled.
Table 2-1: DC Electrical Characteristics (Continued)
TA = 0°C to 70°C, unless otherwise specified.
Parameter Symbol Conditions Min Typ Max Units Test
Levels
Notes
GS1532 Data Sheet
21498 - 8 February 2007 16 of 51
2.3 AC Electrical Characteristics
Table 2-2: AC Electrical Characteristics
TA = 0°C to 70°C, unless otherwise shown
Parameter Symbol Conditions Min Typ Max Units Test
Levels
Notes
System
Device Latency – 10-bit SD – 21 – PCLK 6 –
– 20-bit HD – 19 – PCLK 6 –
– DVB-ASI – 11 – PCLK 6 –
Reset Pulse Width treset –1––ms73
Parallel Input
Parallel Clock Frequency fPCLK – 13.5 – 148.5 MHz 1 –
Parallel Clock Duty Cycle DCPCLK –405060%1–
Input Data Setup Time tSU –2––ns11
Input Data Hold Time tIH –1.5––ns11
Serial Digital Output
Serial Output Data Rate DRSDO – – 1.485,
1.485/1.001,
270
–Gb/s
Gb/s
Mb/s
1–
Serial Output Swing ∆VSDD RSET = 281Ω
Load = 75Ω
– 800 – mVp-p 1 –
Serial Output Rise Time
20% ~ 80%
trSDO ORL compensation
using recommended
circuit — HD signal
– 200 260 ps 1 –
trSDO ORL compensation
using recommended
circuit — SD signal
400 550 1500 ps 1 –
Serial Output Fall Time
20% ~ 80%
tfSDO ORL compensation
using recommended
circuit — HD signal
– 235 260 ps 1 –
tfSDO ORL compensation
using recommended
circuit — SD signal
400 550 1500 ps 1 –
Serial Output Intrinsic Jitter tIJ Pseudorandom and
pathological HD
signal
–90125ps1–
tIJ Pseudorandom and
pathological SD
signal
– 270 350 ps 1 –
Serial Output Duty Cycle
Distortion
DCDSDO HD (1.485Gb/s) – 10 – ps 1 2
DCDSDO SD (270Mb/s) – 20 – ps 1 2
GS1532 Data Sheet
21498 - 8 February 2007 17 of 51
GSPI
GSPI Input Clock Frequency fSCLK –––6.6MHz1–
GSPI Input Clock Duty Cycle DCSCLK –405060%6,7–
GSPI Input Data Setup Time – – 0 – – ns 6,7 –
GSPI Input Data Hold Time – – – – 1.43 ns 6,7 –
GSPI Output Data Hold Time – – 2.10 – – ns 6,7 –
GSPI Output Data Delay
Time
– – – – 7.27 ns 6,7 –
TEST LEVELS
1. Production test at room temperature and nominal supply
voltage with guardbands for supply and temperature ranges.
2. Production test at room temperature and nominal supply
voltage with guardbands for supply and temperature ranges
using correlated test.
3. Production test at room temperature and nominal supply
voltage.
4. QA sample test.
5. Calculated result based on Level 1, 2, or 3.
6. Not tested. Guaranteed by design simulations.
7. Not tested. Based on characterization of nominal parts.
8. Not tested. Based on existing design/characterization data of
similar product.
9. Indirect test.
NOTES
1. With 15pF load.
2. Serial Duty Cycle Distortion is defined here to be the difference
between the width of a ‘1’ bit, and the width of a ‘0’ bit.
3. See Device Power Up on page 46, Figure 3-13.
Table 2-2: AC Electrical Characteristics (Continued)
TA = 0°C to 70°C, unless otherwise shown
Parameter Symbol Conditions Min Typ Max Units Test
Levels
Notes
GS1532 Data Sheet
21498 - 8 February 2007 18 of 51
2.4 Solder Reflow Profiles
The device is manufactured with Matte-Sn terminations and is compatible with both
standard eutectic and Pb-free solder reflow profiles. The recommended standard
eutectic reflow profile is shown in Figure 2-1. MSL qualification was performed
using the maximum Pb-free reflow profile shown in Figure 2-2.
Figure 2-1: Standard Eutectic Solder Reflow Profile
Figure 2-2: Maximum Pb-free Solder Reflow Profile (Preferred)
25˚C
1
00˚C
1
50˚C
1
83˚C
2
30˚C
2
20˚C
Tim
e
Temperature
6 min. max
120 sec. max
60-150 sec.
10-20 sec.
3˚C/sec max
6˚C/sec max
25˚C
1
50˚C
2
00˚C
2
17˚C
2
60˚C
2
50˚C
Tim
e
Temperature
8 min. max
60-180 sec. max
60-150 sec.
20-40 sec.
3˚C/sec max
6˚C/sec max
GS1532 Data Sheet
21498 - 8 February 2007 19 of 51
2.5 Input/Output Circuits
All resistors in ohms, all capacitors in farads, unless otherwise shown.
Figure 2-3: Serial Digital Output
Figure 2-4: VCO Control Output & PLL Lock Time Capacitor
Figure 2-5: PCLK Input
SD
O
SD
O
300 CP_CA
P
LF
VDD
42K
63K
P
CLK
GS1532 Data Sheet
21498 - 8 February 2007 20 of 51
Figure 2-6: VCO Input
Figure 2-7: PLL Loop Bandwidth Control
VDD
25
25
VCO
V
CO
1.5K
5K
8
65mV 7.2K
LB_CON
T
21498 - 8 February 2007 21 of 51
GS1532 Data Sheet
2.6 Host Interface Maps
REGISTER NAME ADDRESS 15 14 13 12 11 10 9 8 7 6 5
43
210
LINE_352M_f2 1Ch Not Used Not Used Not Used Not Used Not Usedb10b9b8b7b6b5b4b3 b2b1b0
LINE_352M_f1 1Bh Not Used Not Used Not Used Not Used Not Usedb10b9b8b7b6b5b4b3 b2b1b0
1Ah
FF_LINE_END_F1 19h Not Used Not Used Not Used Not Used Not Used Not Used b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
FF_LINE_START_F1 18h Not Used Not Used Not Used Not Used Not Used Not Used b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
FF_LINE_END_F0 17h Not Used Not Used Not Used Not Used Not Used Not Used b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
FF_LINE_START_F0 16h Not Used Not Used Not Used Not Used Not Used Not Used b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
AP_LINE_END_F1 15h Not Used Not Used Not Used Not Used Not Used Not Used b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
AP_LINE_START_F1 14h Not Used Not Used Not Used Not Used Not Used Not Used b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
AP_LINE_END_F0 13h Not Used Not Used Not Used Not Used Not Used Not Used b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
AP_LINE_START_F0 12h Not Used Not Used Not Used Not Used Not Used Not Used b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
RASTER_STRUCTURE4 11h Not Used Not Used Not Used Not Used Not Usedb10b9b8b7b6b5b4b3 b2b1b0
RASTER_STRUCTURE3 10h Not Used Not Used Not Used Not Used Not Usedb10b9b8b7b6b5b4b3 b2b1b0
RASTER_STRUCTURE2 0Fh Not Used Not Used Not Used Not Used b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
RASTER_STRUCTURE1 0Eh Not Used Not Used Not Used Not Used b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
0Dh
0Ch
VIDEO_FORMAT_B 0Bh VF4-b7 VF4-b6 VF4-b5 VF4-b4 VF4-b3 VF4-b2 VF4-b1 VF4-b0 VF3-b7 VF3-b6 VF3-b5 VF3-b4 VF3-b3 VF3-b2 VF3-b1 VF3-b0
VIDEO_FORMAT_A 0Ah VF2-b7 VF2-b6 VF2-b5 VF2-b4 VF2-b3 VF2-b2 VF2-b1 VF2-b0 VF1-b7 VF1-b6 VF1-b5 VF1-b4 VF1-b3 VF1-b2 VF1-b1 VF1-b0
09h
08h
07h
06h
05h
VIDEO_STANDARD 04h Not Used VDS-b4 VDS-b3 VDS-b2 VDS-b1 VDS-b0 INT_PROG STD_LOCK NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED
03h
EDH_FLAG 02h Not Used ANC-UES ANC-IDA ANC-IDH ANC-EDA ANC-EDH FF-UES FF-IDA FF-IDH FF-EDA FF-EDH AP-UES AP-IDA AP-IDH AP-EDA AP-EDH
01h
IOPROC_DISABLE 00h Not Used Not Used Not Used Not Used Not Used Not Used Not Used H_CONFIG Not Used 352M_INS ILLEGAL_
REMAP
EDH_CRC_
INS
ANC_CSUM_
INS
CRC_INS LNUM_ INS TRS_INS
21498 - 8 February 2007 22 of 51
GS1532 Data Sheet
2.6.1 Host Interface Map (Read Only Registers)
REGISTER NAME ADDRESS 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
1Ch
1Bh
1Ah
19h
18h
17h
16h
15h
14h
13h
12h
RASTER_STRUCTURE4 11h b10b9b8b7b6b5b4b3b2b1b0
RASTER_STRUCTURE3 10h b10b9b8b7b6b5b4b3b2b1b0
RASTER_STRUCTURE2 0Fh b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
RASTER_STRUCTURE1 0Eh b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
0Dh
0Ch
0Bh
0Ah
09h
08h
07h
06h
05h
VIDEO_STANDARD 04h VDS-b4 VDS-b3 VDS-b2 VDS-b1 VDS-b0 INT_PROG STD_LOCK
03h
02h
01h
00h
21498 - 8 February 2007 23 of 51
GS1532 Data Sheet
2.6.2 Host Interface Map (R/W Configurable Registers)
REGISTER NAME ADDRESS 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LINE_352M_f2 1Ch b10b9b8b7b6b5b4b3b2b1b0
LINE_352M_f1 1Bh b10b9b8b7b6b5b4b3b2b1b0
1Ah
FF_LINE_END_F1 19h b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
FF_LINE_START_F1 18h b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
FF_LINE_END_F0 17h b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
FF_LINE_START_F0 16h b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
AP_LINE_END_F1 15h b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
AP_LINE_START_F1 14h b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
AP_LINE_END_F0 13h b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
AP_LINE_START_F0 12h b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
11h
10h
0Fh
0Eh
0Dh
0Ch
VIDEO_FORMAT_B 0Bh VF4-b7 VF4-b6 VF4-b5 VF4-b4 VF4-b3 VF4-b2 VF4-b1 VF4-b0 VF3-b7 VF3-b6 VF3-b5 VF3-b4 VF3-b3 VF3-b2 VF3-b1 VF3-b0
VIDEO_FORMAT_A 0Ah VF2-b7 VF2-b6 VF2-b5 VF2-b4 VF2-b3 VF2-b2 VF2-b1 VF2-b0 VF1-b7 VF1-b6 VF1-b5 VF1-b4 VF1-b3 VF1-b2 VF1-b1 VF1-b0
09h
08h
07h
06h
05h
04h
03h
EDH_FLAG 02h ANC-UES ANC-IDA ANC-IDH ANC-EDA ANC-EDH FF-UES FF-IDA FF-IDH FF-EDA FF-EDH AP-UES AP-IDA AP-IDH AP-EDA AP-EDH
01h
IOPROC_DISABLE 00h H_CONFIG 352M_INS ILLEGAL_
REMAP
EDH_CRC_
INS
ANC_CSUM_
INS
CRC_INS LNUM_ INS TRS_INS
GS1532 Data Sheet
21498 - 8 February 2007 24 of 51
3. Detailed Description
3.1 Functional Overview
The GS1532 is a multi-rate serializer with an integrated cable driver. When used in
conjunction with the external GO1555/GO1525* Voltage Controlled Oscillator, a
transmit solution at 1.485Gb/s, 1.485/1.001Gb/s or 270Mb/s is realized.
The device has three different modes of operation which must be set by the
application layer through external device pins.
When SMPTE mode is enabled, the device will accept 10-bit multiplexed or 20-bit
demultiplexed SMPTE compliant data at both HD and SD signal rates. The
device’s additional processing features are also enabled in this mode.
In DVB-ASI mode, the GS1532 will accept an 8-bit parallel DVB-ASI compliant
transport stream on its upper input bus. The serial output data stream will be
8b/10b encoded and stuffed.
The GS1532’s third mode allows for the serializing of data not conforming to
SMPTE or DVB-ASI streams.
The provided serial digital outputs feature a high impedance mode, output mute on
loss of parallel clock and adjustable signal swing. The output slew rate is
automatically controlled by the SD/HD setting.
In the digital signal processing core, several data processing functions are
implemented including SMPTE 352M and EDH data packet generation and
insertion, and automatic video standards detection. These features are all enabled
by default, but may be individually disabled via internal registers accessible
through the GSPI host interface.
Finally, the GS1532 contains a JTAG interface for boundary scan test
implementations.
*For new designs use GO1555
3.2 Parallel Data Inputs
Data inputs enter the device on the rising edge of PCLK as shown in Figure 3-1.
The input data format is defined by the setting of the external SD/HD,
SMPTE_BYPASS and DVB_ASI pins and may be presented in 10-bit or 20-bit
format. The input data bus width is controlled independently from the internal data
bus width by the 20bit/10bit input pin.
GS1532 Data Sheet
21498 - 8 February 2007 25 of 51
Figure 3-1: PCLK to Data Timing
3.2.1 Parallel Input in SMPTE Mode
When the device is operating in SMPTE mode, (see SMPTE Mode on page 27),
both SD and HD data may be presented to the input bus in either multiplexed or
demultiplexed form depending on the setting of the 20bit/10bit input pin.
In 20-bit mode, (20bit/10bit = HIGH), the input data format should be word aligned,
demultiplexed luma and chroma data. Luma words should be presented to
DIN[19:10] while chroma words should occupy DIN[9:0].
In 10-bit mode, (20bit/10bit = LOW), the input data format should be word aligned,
multiplexed luma and chroma data. The data should be presented to DIN[19:10].
DIN[9:0] will be high impedance in this mode.
3.2.2 Parallel Input in DVB-ASI Mode
When operating in DVB-ASI mode, (see DVB-ASI mode on page 29), the GS1532
automatically configures the input port for 10-bit operation regardless of the setting
of the 20bit/10bit pin.
The device will accept 8-bit data words on DIN[17:10] such that DIN17 = HIN is the
most significant bit of the encoded transport stream data and DIN10 = AIN is the
least significant bit.
In addition, DIN19 and DIN18 will be configured as the DVB-ASI control signals
INSSYNCIN and KIN respectively. See DVB-ASI mode on page 29 for a
description of these DVB-ASI specific input signals.
DIN[9:0] will be high impedance when the GS1532 is operating in DVB-ASI mode.
3.2.3 Parallel Input in Data-Through Mode
When operating in Data-Through mode, (see Data-Through Mode on page 29), the
GS1532 passes data presented to the parallel input bus to the serial output without
performing any encoding or scrambling.
The input data bus width accepted by the device in this mode is controlled by the
setting of the 20bit/10bit pin.
PCLK
DIN[19:0] DATA
C
ontrol signal
input
t
IS
t
IH
GS1532 Data Sheet
21498 - 8 February 2007 26 of 51
3.2.4 Parallel Input Clock (PCLK)
The frequency of the PCLK input signal required by the GS1532 is determined by
the input data format. Table 3-1 below lists the possible input signal formats and
their corresponding parallel clock rates. Note that DVB-ASI input will always be in
10-bit format, regardless of the setting of the 20bit/10bit pin.
Table 3-1: Parallel Data Input Format
Input Data Format DIN
[19:10]
DIN [9:0] PCLK
Control Signals
20bit/
10bit
SD/
HD
SMPTE_BYPASS DVB_ASI
SMPTE MODE
20bit DEMULTIPLEXED SD LUMA CHROMA 13.5MHz HIGH HIGH HIGH LOW
10bit MULTIPLEXED SD LUMA /
CHROMA
HIGH
IMPEDANCE
27MHz LOW HIGH HIGH LOW
20bit DEMULTIPLEXED HD LUMA CHROMA 74.25 or
74.25/
1.001MHz
HIGH LOW HIGH LOW
10bit MULTIPLEXED HD LUMA /
CHROMA
HIGH
IMPEDANCE
148.5 or
148.5/
1.001MHz
LOW LOW HIGH LOW
DVB-ASI MODE
10bit DVB-ASI DVB-ASI
DATA
HIGH
IMPEDANCE
27MHz HIGH HIGH LOW HIGH
LOW HIGH LOW HIGH
DATA-THROUGH MODE
20bit DEMULTIPLEXED SD DATA DATA 13.5MHz HIGH HIGH LOW LOW
10bit MULTIPLEXED SD DATA HIGH
IMPEDANCE
27MHz LOW HIGH LOW LOW
20bit DEMULTIPLEXED HD DATA DATA 74.25 or
74.25/
1.001MHz
HIGH LOW LOW LOW
10bit MULTIPLEXED HD DATA HIGH
IMPEDANCE
148.5 or
148.5/
1.001MHz
LOW LOW LOW LOW
GS1532 Data Sheet
21498 - 8 February 2007 27 of 51
3.3 SMPTE Mode
The GS1532 is said to be in SMPTE mode when the SMPTE_BYPASS pin is set
HIGH and the DVB_ASI pin is set LOW.
In this mode, the parallel data will be scrambled according to SMPTE 259M or
292M, and NRZ-to-NRZI encoded prior to serialization.
3.3.1 Internal Flywheel
The GS1532 has an internal flywheel which is used in the generation of internal /
external timing signals, and in automatic video standards detection. It is
operational in SMPTE mode only.
The flywheel consists of a number of counters and comparators operating at video
pixel and video line rates. These counters maintain information about the total line
length, active line length, total number of lines per field / frame and total active lines
per field / frame for the received video standard.
When DETECT_TRS is LOW, the flywheel will be locked to the externally supplied
H, V, and F timing signals.
When DETECT_TRS is HIGH, the flywheel will be locked to the embedded TRS
signals in the parallel input data. Both 8-bit and 10-bit TRS code words will be
identified by the device.
The flywheel 'learns' the video standard by timing the horizontal and vertical
reference information supplied a the H, V, and F input pins, or contained in the TRS
ID words of the received video data. Full synchronization of the flywheel to the
received video standard therefore requires one complete video frame.
Once synchronization has been achieved, the flywheel will continue to monitor the
received TRS timing or the supplied H, V, and F timing information to maintain
synchronization.
3.3.2 HVF Timing Signal Extraction
As discussed above, the GS1532's internal flywheel may be locked to externally
provided H, V, and F signals when DETECT_TRS is set LOW by the application
layer.
The H signal timing should also be configured via the H_CONFIG bit of the internal
IOPROC_DISABLE register as either active line based blanking or TRS based
blanking, (see Packet Generation and Insertion on page 32).
Active line based blanking is enabled when the H_CONFIG bit is set LOW. In this
mode, the H input should be HIGH for the entire horizontal blanking period,
including the EAV and SAV TRS words. This is the default H timing assumed by
the device.
When H_CONFIG is set HIGH, TRS based blanking is enabled. In this case, the H
input should be set HIGH for the entire horizontal blanking period as indicated by
the H bit in the associated TRS words.
GS1532 Data Sheet
21498 - 8 February 2007 28 of 51
The timing of these signals is shown in Figure 3-2.
Figure 3-2: H, V, F Timing
H:V:F TIMING - HD 20-BIT INPUT MODE
PCLK
LUMA DATA OUT
CHROMA DATA OUT
H
XYZ
(eav)
0000003FF
XYZ
(eav)
0000003FF
V
F
XYZ
(sav)
0000003FF
XYZ
(sav)
0000003FF
H;V:F TIMING AT SAV - HD 10-BIT INPUT MODE
0000003FF3FF XYZ
(sav)
000000 XYZ
(sav)
PCLK
H
V
F
H:V:F TIMING AT EAV - HD 10-BIT INPUT MODE
PCLK
0000003FF3FF XYZ
(eav)
000000 XYZ
(eav)
MULTIPLEXED
Y/Cr/Cb DATA OUT
H
V
F
MULTIPLEXED
Y/Cr/Cb DATA OUT
H:V:F TIMING - SD 20-BIT INPUT MODE
PCLK
CHROMA DATA OUT
LUMA DATA OUT
H
0003FF
XYZ
(eav)
000
V
F
0003FF
XYZ
(SAV)
000
H:V:F TIMING - SD 10-BIT INPUT MODE
MULTIPLEXED
Y/Cr/Cb DATA OUT
PCLK
H
V
F
XYZ
(eav)
0000003FF XYZ
(sav)
0000003FF
H SIGNAL TIMING:
H_CONFIG = LOW
H_CONFIG = HIGH
GS1532 Data Sheet
21498 - 8 February 2007 29 of 51
3.4 DVB-ASI mode
The GS1532 is said to be in DVB-ASI mode when the SMPTE_BYPASS pin is set
LOW and the DVB_ASI and SD/HD pins are set HIGH.
In this mode, all SMPTE processing functions are disabled, and the 8-bit transport
stream data will be 8b/10b encoded prior to serialization.
3.4.1 Control Signal Inputs
In DVB-ASI mode, the DIN19 and DIN18 pins will be configured as DVB-ASI
control signals INSSYNCIN and KIN respectively.
When INSSYNCIN is set HIGH, the device will insert K28.5 sync characters into
the data stream. This function is used to assist system implementations where the
GS1532 may be preceded by an external data FIFO. Parallel DVB-ASI data may
be clocked into the FIFO at some rate less than 27MHz. The INSSYNCIN input
may then be connected to the FIFO empty signal, thus providing a means of
padding up the data transmission rate to 27MHz. See Figure 3-3.
NOTE: 8b/10b encoding will take place after K28.5 sync character insertion.
KIN should be set HIGH whenever the parallel data input is to be interpreted as any
special character defined by the DVB-ASI standard (including the K28.5 sync
character). This pin should be set LOW when the input is to be interpreted as data.
NOTE: When operating in DVB-ASI mode, DIN[9:0] become high impedance.
Figure 3-3: DVB-ASI FIFO Implementation using the GS1532
3.5 Data-Through Mode
The GS1532 may be configured by the application layer to operate as a simple
parallel-to-serial converter. In this mode, the device presents data to the output
buffer without performing any scrambling or encoding.
Data-through mode is enabled only when both the SMPTE_BYPASS and
DVB_ASI pins are set LOW.
8
8
AIN ~ HIN
PCLK = 27MHz
INSSYNCIN
SD
O
CLK_IN
CLK_OUT
FIFO SD
O
W
RITE_CLK
<
27MHz FE
TS
KIN
GS1532
KIN
READ CLK
=27MHz
GS1532 Data Sheet
21498 - 8 February 2007 30 of 51
3.6 Additional Processing Functions
The GS1532 contains an additional data processing block which is available in
SMPTE mode only, (see SMPTE Mode on page 27).
3.6.1 Input Data Blank
The video input data may be 'blanked' by the GS1532. In this mode, all input video
data except TRS words are set to the appropriate blanking levels by the device.
Both the horizontal and vertical ancillary data spaces will also be set to blanking
levels.
This function is enabled by setting the BLANK pin LOW.
3.6.2 Automatic Video Standard Detection
The GS1532 can detect the input video standard by using the timing parameters
extracted from the received TRS ID words or supplied H, V, and F timing signals
(see Internal Flywheel on page 27). This information is presented to the host
interface via the VIDEO_STANDARD register (Table 3-2).
Total samples per line, active samples per line, total lines per field/frame and active
lines per field/frame are also calculated and presented to the host interface via the
RASTER_STRUCTURE registers (Table 3-3). These line and sample count
registers are updated once per frame at the end of line 12. This is in addition to the
information contained in the VIDEO_STANDARD register.
After device reset, the four RASTER_STRUCTURE registers default to zero.
Table 3-2: Host Interface Description for Video Standard Register
Register Name Bit Name Description R/W Default
VIDEO_STANDARD
Address: 004h
15 – Not Used. – –
14-10 VD_STD[4:0] Video Data Standard (see Table 3-4). R 0
9 INT_PROG Interlace/Progressive: Set LOW if detected video
standard is PROGRESSIVE and is set HIGH if it is
INTERLACED.
R0
8 STD_LOCK Standard Lock: Set HIGH when flywheel has
achieved full synchronization.
R0
7-0 – Not Used. – –
GS1532 Data Sheet
21498 - 8 February 2007 31 of 51
3.6.2.1 Video Standard Indication
The video standard codes reported in the VD_STD[4:0] bits of the
VIDEO_STANDARD register represent the SMPTE standards as shown in
Table 3-4.
In addition to the 5-bit video standard code word, the VIDEO_STANDARD register
also contains two status bits. The STD_LOCK bit will be set HIGH whenever the
flywheel has achieved full synchronization. The INT_PROG bit will be set LOW if
the detected video standard is progressive and HIGH if the detected video
standard is interlaced.
The VD_STD[4:0], STD_LOCK and INT_PROG bits of the VIDEO_STANDARD
register will default to zero after device reset. The VD_STD[4:0] and INT_PROG
bits will also default to zero if the SMPTE_BYPASS pin is asserted LOW or if the
LOCKED output is LOW. The STD_LOCK bit will retain its previous value if the
PCLK is removed.
Table 3-3: Host Interface Description for Raster Structure Registers
Register Name Bit Name Description R/W Default
RASTER_STRUCTURE1
Address: 00Eh
15-12 – Not Used. – –
11-0 RASTER_STRUCTURE_1[11:0] Words Per Active Line R 0
RASTER_STRUCTURE2
Address: 00Fh
15-12 – Not Used. – –
11-0 RASTER_STRUCTURE_2[11:0] Words Per Total Line. R 0
RASTER_STRUCTURE3
Address: 010h
15-11 – Not Used. – –
10-0 RASTER_STRUCTURE_3[10:0] Total Lines Per Frame R 0
RASTER_STRUCTURE4
Address: 011h
15-11 – Not Used. – –
10-0 RASTER_STRUCTURE_4[10:0] Active Lines Per Field R 0
Table 3-4: Supported Video Standards
VD_STD[4:0] SMPTE
Standard
Video Format Length of
HANC
Length of
Active Video
Total
Samples
SMPTE352M
Lines
00h 296M (HD) 1280x720/60 (1:1) 358 1280 1650 13
01h 296M (HD) 1280x720/60 (1:1) - EM 198 1440 1650 13
02h 296M (HD) 1280x720/30 (1:1) 2008 1280 3300 13
03h 296M (HD) 1280x720/30 (1:1) - EM 408 2880 3300 13
04h 296M (HD) 1280x720/50 (1:1) 688 1280 1980 13
05h 296M (HD) 1280x720/50 (1:1) - EM 240 1728 1980 13
06h 296M (HD) 1280x720/25 (1:1) 2668 1280 3960 13
07h 296M (HD) 1280x720/25 (1:1) - EM 492 3456 3960 13
08h 296M (HD) 1280x720/24 (1:1) 2833 1280 4125 13
GS1532 Data Sheet
21498 - 8 February 2007 32 of 51
3.6.3 Packet Generation and Insertion
In addition to input data blanking and automatic video standards detection, the
GS1532 may also calculate, assemble and insert into the data stream various
types of ancillary data packets and TRS ID words.
09h 296M (HD) 1280x720/24 (1:1) - EM 513 3600 4125 13
0Ah 274M (HD) 1920x1080/60 (2:1) or
1920x1080/30 (PsF)
268 1920 2200 10, 572
0Bh 274M (HD) 1920x1080/30 (1:1) 268 1920 2200 18
0Ch 274M (HD) 1920x1080/50 (2:1) or
1920x1080/25 (PsF)
708 1920 2640 10, 572
0Dh 274M (HD) 1920x1080/25 (1:1) 708 1920 2640 18
0Eh 274M (HD) 1920x1080/25 (1:1) - EM 324 2304 2640 18
0Fh 274M (HD) 1920x1080/25 (PsF) - EM 324 2304 2640 10, 572
10h 274M (HD) 1920x1080/24 (1:1) 818 1920 2750 18
11h 274M (HD) 1920x1080/24 (PsF) 818 1920 2750 10, 572
12h 274M (HD) 1920x1080/24 (1:1) - EM 338 2400 2750 18
13h 274M (HD) 1920x1080/24 (PsF) - EM 338 2400 2750 10, 572
14h 295M (HD) 1920x1080/50 (2:1) 444 1920 2376 10, 572
15h 260M (HD) 1920x1035/60 (2:1) 268 1920 2200 10, 572
16h 125M (SD) 1440x487/60 (2:1)
(Or dual link progressive)
268 1440 1716 3, 276
17h 125M (SD) 1440x507/60 (2:1) 268 1440 1716 3, 276
19h 125M (SD) 525-line 487 generic – – 1716 3, 276
1Bh 125M (SD) 525-line 507 generic – – 1716 3, 276
18h ITU-R BT.656
(SD)
1440x576/50 (2:1)
(Or dual link progressive)
280 1440 1728 9, 322
1Ah ITU-R BT.656
(SD)
625-line generic (EM) – – 1728 9, 322
1Dh Unknown HD – – – – –
1Eh Unknown SD – – – – –
1Ch, 1Fh Reserved – – – – –
NOTE: Though the GS1532 will work correctly on and serialize both 59.94Hz and 60Hz formats, it will not distinguish between them.
Table 3-4: Supported Video Standards (Continued)
VD_STD[4:0] SMPTE
Standard
Video Format Length of
HANC
Length of
Active Video
Total
Samples
SMPTE352M
Lines
GS1532 Data Sheet
21498 - 8 February 2007 33 of 51
These features are only available when the device is set to operated in SMPTE
mode and the IOPROC_EN/DIS pin is set HIGH. Individual insertion features may
be enabled or disabled via the IOPROC_DISABLE register (Table 3-5).
All of the IOPROC_DISABLE register bits default to '0' after device reset, enabling
all of the processing features. To disable any individual error correction feature, the
host interface must set the corresponding bit HIGH in this register.
Table 3-5: Host Interface Description for Internal Processing Disable Register
Register Name Bit Name Description R/W Default
IOPROC_DISABLE
Address: 000h
15-9 – Not Used. – –
8 H_CONFIG Horizontal sync timing input configuration. Set LOW
when the H input timing is based on active line
blanking (default). Set HIGH when the H input
timing is based on the H bit of the TRS words. See
Figure 3-2.
R/W 0
7 – Not Used. – –
6 352M_INS SMPTE352M packet insertion. In HD mode, 352M
packets are inserted in the Y channel only when one
of the bytes in the VIDEO_FORMAT_A or
VIDEO_FORMAT_B registers are programmed with
non-zero values. The IOPROC_EN/DIS pin and
SMPTE_BYPASS pin must also be set HIGH. Set
HIGH to disable.
R/W 0
5 ILLEGAL_REMAP Illegal Code Remapping. Detection and correction
of illegal code words within the active picture area
(AP). The IOPROC_EN/DIS pin and
SMPTE_BYPASS pin must also be set HIGH. Set
HIGH to disable.
R/W 0
4 EDH_CRC_INS Error Detection & Handling (EDH) Cyclical
Redundancy Check (CRC) error correction. In SD
mode the GS1532 will generate and insert EDH
packets. The IOPROC_EN/DIS pin and
SMPTE_BYPASS pin must also be set HIGH. Set
HIGH to disable.
R/W 0
3 ANC_CSUM_INS Ancillary Data Checksum insertion. The
IOPROC_EN/DIS pin and SMPTE_BYPASS pin
must also be set HIGH. Set HIGH to disable.
R/W 0
2 CRC_INS Y and C line-based CRC insertion. In HD mode,
line-based CRC words are inserted in both the Y
and C channels. The IOPROC_EN/DIS pin and
SMPTE_BYPASS pin must be also set HIGH. Set
HIGH to disable
R/W 0
1 LNUM_INS Y and C line number insertion - HD mode only. The
IOPROC_EN/DIS pin and SMPTE_BYPASS pin
must be set HIGH. Set HIGH to disable.
R/W 0
0 TRS_INS Timing Reference Signal Insertion. Occurs only
when IOPROC_EN/DIS is HIGH and
SMPTE_BYPASS is HIGH. Set HIGH to disable.
R/W 0
GS1532 Data Sheet
21498 - 8 February 2007 34 of 51
3.6.3.1 SMPTE 352M Payload Identifier Insertion
The GS1532 can generate and insert SMPTE 352M payload identifier ancillary
data packets into the data stream, based on information programmed into the host
interface.
When this feature is enabled, the device will automatically generate the ancillary
data preambles, (DID, SDID, DBN, DC), and calculate the checksum. The SMPTE
352M packet will be inserted into the data stream according to the line numbers
programmed in the LINE_352M registers (Table 3-6).
The insertion process will only take place if one or more of the four
VIDEO_FORMAT registers (Table 3-7) have been programmed with non-zero
values. In addition, the GS1532 requires the 352M_INS bit of the
IOPROC_DISABLE register be set LOW.
NOTE 1: For the purpose of determining the line and pixel position for insertion, the
GS1532 will differentiate between PsF and interlaced formats by interrogating bits
14 and 15 of the VIDEO_FORMAT_A register.
The packets will be inserted immediately after the EAV word in SD video streams
and immediately after the line-based CRC word in the Y channel of HD video
streams.
NOTE 2: It is the responsibility of the user to ensure that there is sufficient space
in the horizontal blanking interval for the insertion of the SMPTE 352M packets.
If there are other ancillary data packets present, the SMPTE 352M packet will be
inserted in the first available location in the horizontal ancillary space. Ancillary
data must be adjacent to the EAV in SD streams or to the line based-CRC in HD
streams. Where there is insufficient space available, the 352M packets will not be
inserted.
Table 3-6: Host Interface Description for SMPTE 352M Packet Line Number Insertion Registers
Register Name Bit Name Description R/W Default
LINE_352M_f1
Address: 01Bh
15-11 – Not Used. – –
10-0 LINE_0_352M[10:0] Line number where SMPTE352M packet is inserted
in field 1.
R/W 0
LINE_352M_f2
Address: 01Ch
15-11 – Not Used. – –
10-0 LINE_1_352M[10:0] Line number where SMPTE352M packet is inserted
in field 2.
R/W 0
GS1532 Data Sheet
21498 - 8 February 2007 35 of 51
3.6.3.2 Illegal Code Remapping
If the ILLEGAL_REMAP bit of the IOPROC_DISABLE register is set LOW, the
GS1532 will remap all codes within the active picture between the values of 3FCh
and 3FFh to 3FBh. All codes within the active picture area between the values of
000h and 003h will be remapped to 004h.
In addition, 8-bit TRS and ancillary data preambles will be remapped to 10-bit
values if this feature is enabled.
3.6.3.3 EDH Generation and Insertion
When operating in SD mode, (SD/HD = HIGH), the GS1532 will generate and
insert complete EDH packets into the data stream. Packet generation and insertion
will only take place if the EDH_CRC_INS bit of the IOPROC_DISABLE register is
set LOW.
The GS1532 will generate all of the required EDH packet data including all ancillary
data preambles, (DID, DBN, DC), reserved code words and checksum. Calculation
of both full field (FF) and active picture (AP) CRC's will be carried out by the device.
SMPTE RP165 specifies the calculation ranges and scope of EDH data for
standard 525 and 625 component digital interfaces. The GS1532 will utilize these
standard ranges by default.
If the received video format does not correspond to 525 or 625 digital component
video standards as determined by the flywheel pixel and line counters, then one of
two schemes for determining the EDH calculation ranges will be employed:
1. Ranges will be based on the line and pixel ranges programmed by the host
interface; or
2. In the absence of user-programmed calculation ranges, ranges will be
determined from the received TRS ID words or supplied H, V, and F timing
signals (see Internal Flywheel on page 27).
Table 3-7: Host Interface Description for SMPTE 352M Payload Identifier Registers
Register Name Bit Name Description R/W Default
VIDEO_FORMAT_B
Address: 00Bh
15-8 SMPTE352M
Byte 4
SMPTE 352M Byte 4 information must be
programmed in this register when 352M_INS =
LOW.
R/W 0
7-0 SMPTE352M
Byte 3
SMPTE 352M Byte 3 information must be
programmed in this register when 352M_INS =
LOW.
R/W 0
VIDEO_FORMAT_A
Address: 00Ah
15-8 SMPTE352M
Byte 2
SMPTE 352M Byte 2 information must be
programmed in this register when 352M_INS =
LOW.
R/W 0
7-0 SMPTE 352M
Byte 1
SMPTE 352M Byte 1 information must be
programmed in this register when 352M_INS =
LOW.
R/W 0
GS1532 Data Sheet
21498 - 8 February 2007 36 of 51
The registers available to the host interface for programming EDH calculation
ranges include active picture and full field line start and end positions for both
fields. Table 3-8 shows the relevant registers, which default to '0' after device reset.
If any or all of these register values are zero, then the EDH CRC calculation ranges
will be determined from the flywheel generated H signal. The first active and full
field pixel will always be the first pixel after the SAV TRS code word. The last active
and full field pixel will always be the last pixel before the start of the EAV TRS code
words.
EDH error flags (EDH, EDA, IDH, IDA and UES) for ancillary data, full field and
active picture will also be inserted. These flags must be programmed into the
EDH_FLAG registers of the device by the application layer (Table 3-9).
NOTE 1: It is the responsibility of the user to ensure that the EDH flag registers are
updated once per field.
The prepared EDH packet will be inserted at the appropriate line of the video
stream according to RP165. The start pixel position of the inserted packet will be
based on the SAV position of that line such that the last byte of the EDH packet
(the checksum) will be placed in the sample immediately preceding the start of the
SAV TRS word.
NOTE 2: It is also the responsibility of the user to ensure that there is sufficient
space in the horizontal blanking interval for the EDH packet to be inserted.
Table 3-8: Host Interface Description for EDH Calculation Range Registers
Register Name Bit Name Description R/W Default
AP_LINE_START_F0
Address: 012h
15-10 – Not Used. – –
9-0 AP_LINE_START_F0[9:0] Field 0 Active Picture start line data used to set
EDH calculation range outside of RP 165
values.
R/W 0
AP_LINE_END_F0
Address: 013h
15-10 – Not Used. – –
9-0 AP_LINE_END_F0[9:0] Field 0 Active Picture end line data used to set
EDH calculation range outside of RP 165
values.
R/W 0
AP_LINE_START_F1
Address: 014h
15-10 – Not Used. – –
9-0 AP_LINE_START_F1[9:0] Field 1 Active Picture start line data used to set
EDH calculation range outside of RP 165
values.
R/W 0
AP_LINE_END_F1
Address: 015h
15-10 – Not Used. – –
9-0 AP_LINE_END_F1[9:0] Field 1 Active Picture end line data used to set
EDH calculation range outside of RP 165
values.
R/W 0
GS1532 Data Sheet
21498 - 8 February 2007 37 of 51
FF_LINE_START_F0
Address: 016h
15-10 – Not Used. – –
9-0 FF_LINE_START_F0[9:0] Field 0 Full Field start line data used to set EDH
calculation range outside of RP 165 values.
R/W 0
FF_LINE_END_F0
Address: 017h
15-10 – Not Used. – –
9-0 FF_LINE_END_F0[9:0] Field 0 Full Field end line data used to set EDH
calculation range outside of RP 165 values.
R/W 0
FF_LINE_START_F1
Address: 018h
15-10 – Not Used. – –
9-0 FF_LINE_START_F1[9:0] Field 1 Full Field start line data used to set EDH
calculation range outside of RP-165 values.
R/W 0
FF_LINE_END_F1
Address: 019h
15-10 – Not Used. – –
9-0 FF_LINE_END_F1[9:0] Field 1 Full Field end line data used to set EDH
calculation range outside of RP-165 values.
R/W 0
Table 3-8: Host Interface Description for EDH Calculation Range Registers (Continued)
Register Name Bit Name Description R/W Default
Table 3-9: Host Interface Description for EDH Flag Register
Register Name Bit Name Description R/W Default
EDH_FLAG
Address: 002h
15 – Not Used. – –
14 ANC-UES Ancillary Unknown Error Status flag will be
generated and inserted when IOPROC_EN/DIS and
SMPTE_BYPASS pins are HIGH and
EDH_CRC_INS bit is LOW. SD mode only.
R/W 0
13 ANC-IDA Ancillary Internal device error Detected Already flag
will be generated and inserted when
IOPROC_EN/DIS and SMPTE_BYPASS pins are
HIGH and EDH_CRC_INS bit is LOW. SD mode
only.
R/W 0
12 ANC-IDH Ancillary Internal device error Detected Here flag
will be generated and inserted when
IOPROC_EN/DIS and SMPTE_BYPASS pins are
HIGH and EDH_CRC_INS bit is LOW. SD mode
only.
R/W 0
11 ANC-EDA Ancillary Error Detected Already flag will be
generated and inserted when IOPROC_EN/DIS and
SMPTE_BYPASS pins are HIGH and
EDH_CRC_INS bit is LOW. SD mode only.
R/W 0
10 ANC-EDH Ancillary Error Detected Here flag will be generated
and inserted when IOPROC_EN/DIS and
SMPTE_BYPASS pins are HIGH and
EDH_CRC_INS bit is LOW. SD mode only.
R/W 0
9 FF-UES Full Field Unknown Error flag will be generated and
inserted when IOPROC_EN/DIS and
SMPTE_BYPASS pins are HIGH and
EDH_CRC_INS bit is LOW. SD mode only.
R/W 0
GS1532 Data Sheet
21498 - 8 February 2007 38 of 51
8 FF-IDA Full Field Internal device error Detected Already flag
will be generated and inserted when
IOPROC_EN/DIS and SMPTE_BYPASS pins are
HIGH and EDH_CRC_INS bit is LOW. SD mode
only.
R/W 0
7 FF-IDH Full Field Internal device error Detected flag will be
generated and inserted when IOPROC_EN/DIS and
SMPTE_BYPASS pins are HIGH and
EDH_CRC_INS bit is LOW. SD mode only.
R/W 0
6 FF-EDA Full Field Error Detected Already flag will be
generated and inserted when IOPROC_EN/DIS and
SMPTE_BYPASS pins are HIGH and
EDH_CRC_INS bit is LOW. SD mode only.
R/W 0
5 FF-EDH Full Field Error Detected Here flag will be generated
and inserted when IOPROC_EN/DIS and
SMPTE_BYPASS pins are HIGH and
EDH_CRC_INS bit is LOW. SD mode only.
R/W 0
4 AP-UES Active Picture Unknown Error Status flag will be
generated and inserted when IOPROC_EN/DIS and
SMPTE_BYPASS pins are HIGH and
EDH_CRC_INS bit is LOW. SD mode only.
R/W 0
3 AP-IDA Active Picture Internal device error Detected
Already flag will be generated and inserted when
IOPROC_EN/DIS and SMPTE_BYPASS pins are
HIGH and EDH_CRC_INS bit is LOW. SD mode
only.
R/W 0
2 AP-IDH Active Picture Internal device error Detected Here
flag will be generated and inserted when
IOPROC_EN/DIS and SMPTE_BYPASS pins are
HIGH and EDH_CRC_INS bit is LOW. SD mode
only.
R/W 0
1 AP-EDA Active Picture Error Detected Already flag will be
generated and inserted when IOPROC_EN/DIS and
SMPTE_BYPASS pins are HIGH and
EDH_CRC_INS bit is LOW. SD mode only.
R/W 0
0 AP-EDH Active Picture Error Detected Here flag will be
generated and inserted when IOPROC_EN/DIS and
SMPTE_BYPASS pins are HIGH and
EDH_CRC_INS bit is LOW. SD mode only.
R/W 0
Table 3-9: Host Interface Description for EDH Flag Register (Continued)
Register Name Bit Name Description R/W Default
GS1532 Data Sheet
21498 - 8 February 2007 39 of 51
3.6.3.4 Ancillary Data Checksum Generation and Insertion
The GS1532 will calculate checksums for all detected ancillary data packets
presented to the device. These calculated checksum values are inserted into the
data stream prior to serialization.
Ancillary data checksum generation and insertion will only take place if the
ANC_CSUM_INS bit of the IOPROC_DISABLE register is set LOW.
3.6.3.5 Line Based CRC Generation and Insertion
The GS1532 will generate and insert line based CRC words into both the Y and C
channels of the data stream. This feature is only available in HD mode and is
enabled by setting the CRC_INS bit of the IOPROC_DISABLE register LOW.
3.6.3.6 HD Line Number Generation and Insertion
In HD mode, the GS1532 will calculate and insert line numbers into the Y and C
channels of the output data stream.
Line number generation is in accordance with the relevant HD video standard as
determined by the device, (see Automatic Video Standard Detection on page 30).
This feature is enabled when SD/HD = LOW, and the LNUM_INS bit of the
IOPROC_DISABLE register is set LOW.
3.6.3.7 TRS Generation and Insertion
The GS1532 can generate and insert 10-bit TRS code words into the data stream
as required. This feature is enabled by setting the TRS_INS bit of the
IOPROC_DISABLE register LOW.
TRS word generation will be performed in accordance with the timing parameters
generated by the flywheel which will be locked either to the received TRS ID words
or the supplied H, V, and F timing signals (see Internal Flywheel on page 27).
3.7 Parallel-To-Serial Conversion
The parallel data output of the internal data processing blocks is fed to the
parallel-to-serial converter. The function of this block is to generate a serial data
stream from the 10-bit or 20-bit parallel data words and pass the stream to the
integrated cable driver.
GS1532 Data Sheet
21498 - 8 February 2007 40 of 51
3.8 Serial Digital Data PLL
To obtain a clean clock signal for serialization and transmission, the input PCLK is
locked to an external reference signal via the GS1532's integrated phase-locked
loop. This PLL is also responsible for generating all internal clock signals required
by the device.
Internal division ratios for the locked PCLK are determined by the setting of the
SD/HD and 20bit/10bit pins as shown in Table 3-10.
3.8.1 External VCO
The GS1532 requires the GO1555/GO1525* external voltage controlled oscillator
as part of its internal PLL.
Power for the external VCO is generated entirely by the GS1532 from an integrated
voltage regulator. The internal regulator uses +3.3V supplied on the CP_VDD /
CP_GND pins to provide +2.5V on the VCO_VCC / VCO_GND pins.
The external VCO produces a 1.485GHz reference signal for the PLL, input on the
VCO pin of the device. Both reference and control signals should be referenced to
the supplied VCO_GND as shown in the recommended application circuit of
Typical Application Circuit on page 47.
*For new designs use GO1555
3.8.2 Lock Detect Output
The lock detect block controls the serial digital output signal and indicates to the
application layer the lock status of the device via the LOCKED output pin.
LOCKED will be asserted HIGH if and only if the internal data PLL has locked the
PCLK signal to the external VCO reference signal and one of the following is true:
1. The device is set to operate in SMPTE mode and has detected SMPTE TRS
words in the serial stream; or
2. The device is set to operate in DVB-ASI mode and has detected K28.5 sync
characters in the serial stream; or
Table 3-10: Serial Digital Output Rates
Supplied PCLK Rate Serial Digital
Output Rate
Pin Settings
SD/HD 20bit/10bit
74.25 or
74.25/1.001 MHz
1.485 or
1.485/1.001Gb/s
LOW HIGH
148.5 or
148.5/1.001MHz
1.485 or
1.485/1.001Gb/s
LOW LOW
13.5MHz 270Mb/s HIGH HIGH
27MHz 270Mb/s HIGH LOW
GS1532 Data Sheet
21498 - 8 February 2007 41 of 51
3. The device is set to operate in Data-Through mode.
3.8.3 Loop Bandwidth Adjustment
For new designs the GO1555 is recommended for use with the GS1532. The
recommended application ciruit can be seen in Section 4.1 Typical Application
Circuit.
Designs using the GO1525 VCO use different loop bandwidth components. The
application circuit is shown in Figure 3-4.
NOTE: When using the GS1532 with the GS4911B clock generator a narrower
loop bandwidth for the GS1532 serializer should be used. For more details please
refer to section 2.5 of the GS4911B Reference Design.
Figure 3-4: Typical Application Circuit using GO1525
3.9 Serial Digital Output
The GS1532 contains an integrated current mode differential serial digital cable
driver with automatic slew rate control.
To enable the output, SDO_EN/DIS must be set HIGH by the application layer.
Setting the SDO_EN/DIS signal LOW will cause the SDO and SDO output pins to
become high impedance, resulting in reduced device power consumption.
With suitable external return loss matching circuitry, the GS1532's serial digital
outputs will provide a minimum output return loss of -15dB at SD rates. Gennum
recommends using the GS1528 SDI Dual Slew-Rate Cable Driver to meet output
return loss specifications at HD rates.
LOCK
VCO_VCC
+1.8V_A
+3.3V
VCO_VCC
1
2
3
4
72
73
74
75
76
77
78
79
80
CP_VDD
PD_GND
PD_VDD
LOCKED
VCO
VCO
VCO_GND
VCO_VCC
LF
CP_CAP
LB_CONT
CP_GND
GO1525
5
4 8
2
7 1
3
6VCTR
GND GND
GND
VCC O/P
NC
GND
10n
0
10n
100n
10n
0
1u
2n2
1u 10n10n
0
1u
10n
GND_A
GND_A
GND_VCO
GND_VCO
GND_VCO
GND_VCO
GND_VCO
GND_VCO
GND_VCO
GND_VCO
VCO_VCC
15K
GS1532
GS1532 Data Sheet
21498 - 8 February 2007 42 of 51
The integrated cable driver uses a separate power supply of +1.8V DC supplied via
the CD_VDD and CD_GND pins.
3.9.1 Output Swing
Nominally, the voltage swing of the serial digital output is 800mVp-p single-ended
into a 75Ω load. This is set externally by connecting the RSET pin to CD_VDD
through 281Ω .
The output swing may be decreased by increasing the value of the RSET resistor.
The relationship is approximated by the curve shown in Figure 3-5.
Alternatively, the serial digital output swing can drive 800mVp-p into a 50Ω load.
Since the output swing is reduced by a factor of approximately one third when the
smaller load is used, the RSET resistor must be 187Ω to obtain 800mVp-p.
Figure 3-5: Serial Digital Output Swing
3.9.2 Serial Digital Output Mute
The GS1532 will automatically mute the serial digital output when the LOCKED
output signal is LOW. In this case, the SDO and SDO signals are set to a constant
voltage level.
3.10 GSPI Host Interface
The GSPI, or Gennum Serial Peripheral Interface, is a 4-wire interface provided to
allow the host to enable additional features of the device and /or to provide
additional status information through configuration registers in the GS1532.
The GSPI comprises a serial data input signal SDIN, serial data output signal
SDOUT, an active low chip select CS, and a burst clock SCLK. The burst clock
must have a duty cycle between 40% and 60%.
Because these pins are shared with the JTAG interface port, an additional control
signal pin JTAG/HOST is provided. When JTAG/HOST is LOW, the GSPI interface
is enabled.
50Ω load
300
400
500
600
700
800
900
1000
250 300 350 400 450 500 550 600 650 700
RSET(Ω)
∆VSDO(mVp-p)
200
75Ω load
GS1532 Data Sheet
21498 - 8 February 2007 43 of 51
When operating in GSPI mode, the SCLK, SDIN, and CS signals are provided by
the host interface. The SDOUT pin is a high-impedance output allowing multiple
devices to be connected in parallel and selected via the CS input. The interface is
illustrated in the Figure 3-6 below.
All read or write access to the GS1532 is initiated and terminated by the host
processor. Each access always begins with a 16-bit command word on SDIN
indicating the address of the register of interest. This is followed by a 16-bit data
word on SDIN in write mode, or a 16-bit data word on SDOUT in read mode.
Figure 3-6: Gennum Serial Peripheral Interface (GSPI)
3.10.1 Command Word Description
The command word is transmitted MSB first and contains a read/write bit, nine
reserved bits and a 6-bit register address. Set R/W = '1' to read and R/W = '0' to
write from the GSPI.
Command words are clocked into the GS1532 on the rising edge of the serial clock
SCLK. The appropriate chip select signal, CS, must be asserted low a minimum of
1.5ns (t0 in Figure 3-9 and Figure 3-10) before the first clock edge to ensure proper
operation.
Each command word must be followed by only one data word to ensure proper
operation.
Figure 3-7: Command Word
Figure 3-8: Data Word
SCLK
CS
SDOUT
SDIN
SCLK
CS
SDIN
SDOUT
Application Host
GS1532
R/W RSV RSV RSV A0A1A2A3A4A5RSVRSVRSVRSVRSV RSV
MSB LSB
D15 D14 D13 D12 D0D1D2
D3D4
D5
D6D7
D8
D9
D11 D10
MSB
LS
B
GS1532 Data Sheet
21498 - 8 February 2007 44 of 51
3.10.2 Data Read and Write Timing
Read and write mode timing for the GSPI interface is shown in Figure 3-9 and
Figure 3-10 respectively. The maximum SCLK frequency allowed is 6.6MHz.
When writing to the registers via the GSPI, the MSB of the data word may be
presented to SDIN immediately following the falling edge of the LSB of the
command word. All SDIN data is sampled on the rising edge of SCLK.
When reading from the registers via the GSPI, the MSB of the data word will be
available on SDOUT 12ns (t5) following the falling edge of the LSB of the command
word, and thus may be read by the host on the very next rising edge of the clock.
The remaining bits are clocked out by the GS1532 on the negative edges of SCLK.
Figure 3-9: GSPI Read Mode Timing
Figure 3-10: GSPI Write Mode Timing
3.10.3 Configuration and Status Registers
Table 3-11 summarizes the GS1532's internal status and configuration registers.
All of these registers are available to the host via the GSPI and are all individually
addressable.
Where status registers contain less than the full 16 bits of information, two or more
registers may be combined at a single logical address.
S
DOUT
R/W RSV RSV A0A1
A2A3
A4
A5
RSV
RSV
RSV
RSV
RSVRSV
D15 D14 D13 D12 D0
D1
D2
D3
D4D5
D6
D7
D8
D9
D11 D10
SCLK
CS
SDIN RSV
t0t2
t3input data
setup time
duty
cycle t4period t5
t6output data
hold time
R/W RSV RSV A0A1
A2A3
A4
A5
RSV
RSV
RSV
RSV
RSVRSV D15 D14 D13 D12 D0
D1
D2
D3
D4D5
D6
D7
D8
D9
D11 D10
SCLK
CS
S
DIN RSV
t0
t
2
t3input data
setup time
duty
cycle
t
4period
GS1532 Data Sheet
21498 - 8 February 2007 45 of 51
3.11 JTAG
When the JTAG/HOST input pin of the GS1532 is set HIGH, the host interface port
will be configured for JTAG test operation. In this mode, pins 27 through 30
become TMS, TDO, TDI, and TCK. In addition, the RESET_TRST pin will operate
as the test reset pin.
Boundary scan testing using the JTAG interface will be enabled in this mode.
There are two methods in which JTAG can be used on the GS1532:
1. As a stand-alone JTAG interface to be used at in-circuit ATE (Automatic Test
Equipment) during PCB assembly; or
2. Under control of the host for applications such as system power on self tests.
When the JTAG tests are applied by ATE, care must be taken to disable any other
devices driving the digital I/O pins. If the tests are to be applied only at ATE, this
can be accomplished with tri-state buffers used in conjunction with the
JTAG/HOST input signal. This is shown in Figure 3-11.
Figure 3-11: In-Circuit JTAG
Table 3-11: GS1532 Internal Registers
Address Register Name See Section
000h IOPROC_DISABLE Section 3.6.3
002h EDH_FLAG Section 3.6.3.3
004h VIDEO_STANDARD Section 3.6.2
00Ah - 00Bh VIDEO_FORMAT Section 3.6.3.1
00Eh - 011h RASTER_STRUCTURE Section 3.6.2
012h - 019h EDH_CALC_RANGES Section 3.6.3.3
01Bh - 01Ch LINE_352M Section 3.6.3.1
Application HOST
GS1532
CS_TMS
SCLK_TCK
SDIN_TDI
SDOUT_TDO
JTAG_HOST
In-circuit ATE probe
GS1532 Data Sheet
21498 - 8 February 2007 46 of 51
Alternatively, if the test capabilities are to be used in the system, the host may still
control the JTAG/HOST input signal, but some means for tri-stating the host must
exist in order to use the interface at ATE. This is represented in Figure 3-12.
Figure 3-12: System JTAG
Please contact your Gennum representative to obtain the BSDL model for the
GS1532.
3.12 Device Power Up
The GS1532 has a recommended power supply sequence. To ensure correct
power up, power the CORE_VDD pins before the IO_VDD pins.
Device pins may also be driven prior to power up without causing damage.
To ensure that all internal registers are cleared upon power-up, the application
layer must hold the RESET_TRST signal LOW for a minimum of 1ms after the core
power supply has reached the minimum level specified in the DC Electrical
Characteristics Table, (Table 2-1). See Figure 3-13.
3.13 Device Reset
In order to initialize all internal operating conditions to their default states the
application layer must hold the RESET_TRST signal LOW for a minimum of treset =
1ms.
When held in reset, all device outputs will be driven to a high-impedance state.
Figure 3-13: Reset Pulse
Application HOST
GS1532
CS_TMS
SCLK_TCK
SDIN_TDI
SDOUT_TDO
JTAG_HOST
In-circuit ATE probe
Tri-State
CORE_VDD
R
ESET_TRST treset
+1.65V +1.8V
Reset Reset
treset
GS1532 Data Sheet
21498 - 8 February 2007 47 of 51
4. Application Reference Design
4.1 Typical Application Circuit
LOCK
SD/HDb
20bit/10bitb
IOPROC_EN/DISb
DATA0
DATA7
DATA12
DATA1
DATA8
DATA13
DATA14
DATA16
DATA3
DATA6
DATA2
DATA11
DATA4
DATA17
DATA10
DATA15
DATA18
DATA9
DATA5
DETECT_TRS
SDO_EN/DISb
JTAG/HOSTb
DATA19
IOPROC_EN/DISb
20bit/10bitb
+1.8V
+3.3V
+1.8V_A
+1.8V
+3.3V
+3.3V
VCO_VCC
+1.8V_A
+1.8V_A
+3.3V
VCO_VCC
+1.8V_A
GS1532
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
55
54
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
CP_VDD
PD_GND
PD_VDD
NC
DVB_ASI
SD/HD
20bit/10bit
IOPROC_EN/DIS
SMPTE_BYPASS
RSET
CD_VDD
SDO_EN/DIS
CD_GND
SDO
SDO
RESET_TRST
JTAG/HOST
CS_TMS
SDOUT_TDO
SDIN_TDI
SCLK_TCK
NC
BLANK
CORE_GND
F
V
H
CORE_VDD
DIN0
DIN1
IO_GND
IO_VDD
DIN2
DOUT3
DIN4
DIN5
DIN6
DIN7
DIN8
IO_GND
DIN9
DIN10
DIN11
IO_VDD
DIN13
DIN12
DIN14
DIN15
DIN16
DIN17
IO_GND
IO_VDD
DIN18
DIN19
CORE_VDD
NC
NC
DETECT_TRS
CORE_GND
PCLK
LOCKED
VCO
VCO
VCO_GND
VCO_VCC
LF
CP_CAP
LB_CONT
CP_GND
R1
GO1555
5
4 8
2
7 1
3
6VCTR
GND GND
GND
VCC O/P
NC
GND
10n
L
R1
281 +/-1%
1u
1u
C
0
BNC
10n
10n
R
L
C55
10n
R
C
100n
10 n
10n
BNC
10n
4u7
10n
10n
0
1u
12
1u
4u7
47n
1u 10n
10n
75
10n
0
10n
1u
10n
F
V
H
PCLK
DATA[19..0]
DVB_ASI
SD/HDb
RESET_TRSTb
LOCK
BLANKb
SMPTE_BYPASSb
SCLK_TCK
SDOUT_TDO
SDIN_TDI
CSb_TMS
JTAG/HOSTb
DETECT_TRS
SDO_EN/DISb
20bit/10bitb
IOPROC_EN/DISb
NOTE: To guarantee -15dB Output Return Loss
at HD rates, it is recommended that the GS1528
Multi-Rate Cable Driver be used.
R, L, C form the output return
loss compensation network.
Values are subject to change.
JTAG/HOSTb
DETECT_TRS
SDO_EN/DISb
SMPTE_BYPASSb
SD/HDb
DVB_ASI
PCLK
BLANKb
LOCK
BLANKb
DVB_ASI
SMPTE_BYPASSb
GND_A
GND_A
GND_A
GND_A
GND_A
GND_D
GND_D
GND_D
GND_D
GND_A
GND_D
GND_VCO
GND_VCO
GND_VCO
G
ND_VCO
GND_VCO
GND_VCO
GND_VCO
GND_VCO
RSV
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
VCO_VCC
GND_A
NOTE: The value of R1 used for the pull-up
resistor should be 75ohm when the outputs are
connected directly to a 75ohm cable as shown
here.
The value of R1 should be 50ohm when the
outputs are interfaced to the GS1528A Cable
Driver. Please see Gennum's Reference Design:
"Interfacing the GS1532 to the GS1528 Multi-rate
Cable Driver".
33
Do not populate R2
R2
NOTE: For GO1525 loop bandwidth
component values see Section 3.8.3.
GS1532 Data Sheet
21498 - 8 February 2007 48 of 51
5. References & Relevant Standards
SMPTE 125M Component video signal 4:2:2 – bit parallel interface
SMPTE 260M 1125 / 60 high definition production system – digital representation and bit
parallel interface
SMPTE 267M Bit parallel digital interface – component video signal 4:2:2 16 x 9 aspect ratio
SMPTE 274M 1920 x 1080 scanning analog and parallel digital interfaces for multiple picture
rates
SMPTE 291M Ancillary Data Packet and Space Formatting
SMPTE 292M Bit-Serial Digital Interface for High-Definition Television Systems
SMPTE 293M 720 x 483 active line at 59.94 Hz progressive scan production – digital
representation
SMPTE 296M 1280 x 720 scanning, analog and digital representation and analog interface
SMPTE 352M Video Payload Identification for Digital Television Interfaces
SMPTE RP165 Error Detection Checkwords and Status Flags for Use in Bit-Serial Digital
Interfaces for Television
SMPTE RP168 Definition of Vertical Interval Switching Point for Synchronous Video Switching
GS1532 Data Sheet
21498 - 8 February 2007 49 of 51
6. Package & Ordering Information
6.1 Package Dimensions
TOLERANCES OF FORM AND POSITION
SYMBOL
MIN NOM MAX MIN NOM MAX
MILLIMETER INCH
80L
b
e
aaa
ccc
bbb
D2
E2
0.22
0.65 BSC 0.026 BSC
12.35
0.20
0.20
0.10
0.008
0.008
0.004
0.486
0.48612.35
0.30 0.38 0.009 0.012 0.01
5
NOTES:
Diagram shown is representative only. Table X is fixed for all pin sizes, and
Table Y is specific to the 80-pin package.
Table Y
ddd 0.13 0.005
Table X
CONTROL DIMENSIONS ARE IN MILLIMETERS.
1. DIMENSIONS D1 AND E1 DO NOT INCLUDE MOLD PROTRUSION.
ALLOWABLE PROTRUSION IS 0.25mm PER SIDE. D1 AND E1 ARE
MAXIMUM PLASTIC BODY SIZE DIMENSIONS INCLUDING MOLD
MISMATCH.
2. DIMENSION b DOES NOT INCLUDE DAMBAR PROTRUSION.
ALLOWABLE DAMBAR PROTRUSION SHALL NOT CAUSE THE LEAD
WIDTH TO EXCEED THE MAXIMUM b DIMENSION BY MORE THAN
0.08mm. DAMBAR CAN NOT BE LOCATED ON THE LOWER RADIUS
OR THE FOOT. MINIMUM SPACE BETWEEN PROTRUSION AND AN
ADJACENT LEAD IS 0.07mm FOR 0.4mm AND 0.5mm PITCH PACKAGES.
GS1532 Data Sheet
21498 - 8 February 2007 50 of 51
6.2 Packaging Data
6.3 Ordering Information
Parameter Value
Package Type 14mm x 14mm 80-pin LQFP
Package Drawing Reference JEDEC MS026
Moisture Sensitivity Level 3
Junction to Case Thermal Resistance, θj-c 11.6°C/W
Junction to Air Thermal Resistance, θj-a (at zero airflow) 39.9°C/W
Psi 0.6°C/W
Pb-free and RoHS Compliant (GS1532-CFE3) Yes
Part Number Pb-free and
RoHS Compliant
Package Temperature Range
GS1532-CF No 80-pin LQFP 0°C to 70°C
GS1532-CFE3 Yes 80-pin LQFP 0°C to 70°C
CAUTION
ELECTROSTATIC SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION
GENNUM CORPORATION
Mailing Address: P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3
Shipping Address: 970 Fraser Drive, Burlington, Ontario, Canada L7L 5P5
Tel. +1 (905) 632-2996 Fax. +1 (905) 632-5946
GENNUM JAPAN CORPORATION
Shinjuku Green Tower Building 27F, 6-14-1, Nishi Shinjuku, Shinjuku-ku, Tokyo, 160-0023 Japan
Tel. +81 (03) 3349-5501, Fax. +81 (03) 3349-5505
GENNUM UK LIMITED
25 Long Garden Walk, Farnham, Surrey, England GU9 7HX
Tel. +44 (0)1252 747 000 Fax +44 (0)1252 726 523
Gennum Corporation assumes no liability for any errors or omissions in this document, or for the use of the
circuits or devices described herein. The sale of the circuit or device described herein does not imply any
patent license, and Gennum makes no representation that the circuit or device is free from patent infringement.
GENNUM and the G logo are registered trademarks of Gennum Corporation.
© Copyright 2002 Gennum Corporation. All rights reserved. Printed in Canada.
www.gennum.com
GS1532 Data Sheet
21498 - 8 February 2007
51
51 of 51
DOCUMENT IDENTIFICATION
DATA SHEET
The product is in production. Gennum reserves the right to make
changes at any time to improve reliability, function or design, in order to
provide the best product possible.
7. Revision History
Version ECR PCN Date Changes and / or Modifications
3 133556 – March 2004 Register addresses in Tables 2, 3, 5, 6, 7, 8, 9 and 11 are shown in DECIMAL.
They should be shown in HEX (as per master Table in Section 2.5). Pins 65 and
66 were not shown on Pin Description Table.
4 133860 – May 2004 Converted GS1532 data sheet to new template format. Added note to host
interface pins. Moved ESD to maximum absolute ratings. Adjusted Input Data
Setup Time in AC Electrical Characteristics. Text in Table 4-2 and text in section
4.6.2.1 changed to read “INT_PROG” and "Interlace/Progressive: Set LOW if
detected video standard is PROGRESSIVE and is set HIGH if it is
INTERLACED”. Added Pb-free and Green availability and ordering information.
Corrected minor typing errors.
5 134909 – April 2005 Updated document status to Data Sheet. Added description to Solder Reflow
Profiles. Clarified setting of VD_STD[4:0], INT_PROG and STD_LOCK bits
following a reset and/or removal of PCLK. Modified Typical Application Circuit to
add interfacing note for GS1532 to GS1528A Cable Driver. Added Packaging
Data section. Changed ‘Green’ references to RoHS Compliant.
6 136983 – June 2005 Restored missing overlines to pin names. Rephrased RoHS compliance
statement. Added note on 59.94Hz and 60Hz formats to Table 3-4.
7 142223 41245 October 2006 Modified internal register addresses to hexidecimal values in Table 3-11. Added
built-in ClockCleanerTM feature to document title and functional block diagram.
Specified that serializer can reject >300ps pclk jitter in Description section on
page 1. Corrected VIDEO_FORMAT register labels in description of bit 6
(352M_INS) in Table 3-5.
8 143760 42774 February 2007 Recommended GO1555 VCO for new designs. Updated Section 4.1 Typical
Application Circuit. Added Section 3.8.3 Loop Bandwidth Adjustment.
