GENNUM GS9090-CNE3

GS9090 GenLINX® III 270Mb/s
Deserializer for SDI and DVB-ASI
GS9090 Data Sheet
Key Features
Description
•
SMPTE 259M-C compliant descrambling and NRZI
to NRZ decoding (with bypass)
•
DVB-ASI sync word detection and 8b/10b decoding
•
Integrated line-based FIFO for data
alignment/delay, clock phase interchange, DVB-ASI
data packet extraction and clock rate interchange,
and ancillary data packet extraction
The GS9090 is a 270Mb/s reclocking deserializer with
an internal FIFO. When used in conjunction with one of
Gennum’s SDI Cable Equalizers, a receive solution for
SD-SDI and DVB-ASI applications can be realized.
•
Integrated VCO and reclocker
•
Automatic or manual selection between SMPTE
video and DVB-ASI data
•
Single serial digital input buffer with wide input
sensitivity
•
User selectable additional processing features
including:
•
TRS, ANC data checksum, and EDH CRC error
detection and correction
•
programmable ANC data detection
•
illegal code remapping
•
Internal flywheel for noise immune H, V, F
extraction
•
Automatic standards detection and indication
•
Enhanced Gennum Serial Peripheral Interface
(GSPI)
•
JTAG test interface
•
Polarity insensitive for DVB-ASI and SMPTE
signals
•
+1.8V core power supply with optional +1.8V or
+3.3V I/O power supply
•
Small footprint (8mm x 8mm)
•
Low power operation (typically 145mW)
•
Pb-free and RoHS compliant
Applications
•
SMPTE 259M-C Serial Digital Interfaces
•
DVB-ASI Serial Digital Interfaces
In addition to reclocking and deserializing the input data
stream, the GS9090 performs NRZI-to-NRZ decoding,
descrambling as per SMPTE 259M-C, and word
alignment when operating in SMPTE mode. When
operating in DVB-ASI mode, the device will word align
the data to K28.5 sync characters and 8b/10b decode
the received stream.
The integrated reclocker features a very wide Input
Jitter Tolerance, and is fully compatible with both
SMPTE and DVB-ASI input streams.
The GS9090 includes a range of data processing
functions such as error detection and correction,
automatic standards detection, and EDH support. The
device can also detect and extract SMPTE 352M
payload identifier packets and independently identify
the received video standard. This information is read
from internal registers via the host interface port.
TRS errors, EDH CRC errors, and ancillary data
checksum errors can all be detected and corrected. A
single DATA_ERROR pin is provided which is an
inverted logical 'OR'ing of all detectable errors.
Individual error status is stored in internal
‘ERROR_STATUS’ registers.
The GS9090 also incorporates a video line-based FIFO.
This FIFO may be used in four user-selectable modes
to carry out tasks such as data alignment / delay, clock
phase interchange, MPEG packet extraction and clock
rate interchange, and ancillary data packet extraction.
Parallel data outputs are provided in 10-bit multiplexed
format, with the associated parallel clock output signal
operating at 27MHz.
The GS9090 is Pb-free, and the encapsulation
compound does not contain halogenated flame
retardant (RoHS compliant).
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www.gennum.com
GS9090 Data Sheet
RD_CLK
RD_RESET
ASI sync detect
S->P
SMPTE sync detect
TERM
DDI_1
Reclocker
IOPROC_EN
Programmable
I/O
LOCK detect
pll_lock
DDI_1
STAT[3:0]
FW_EN
DVB_ASI
AUTO/MAN
SMPTE_BYPASS
LOCKED
PCLK
LFLF+
LB_CONT
carrier_detect
SMPTE Descramble, Word
Alignment and
Flywheel
K28.5 Sync
Detect, DVB-ASI
Word Alignment
and
8b/10b Decode
DOUT[9:0]
TRS Check
CSUM Check
ANC Data
Detection
TRS Correct
CSUM Correct
EDH Check &
Correct
Illegal Code Remap
DATA_ERROR
FIFO
HOST Interface
/ JTAG test
JTAG/HOST
CS_TMS
SCLK_TCK
SDIN_TDI
SDOUT_TDO
RESET
GS9090 Functional Block Diagram
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GS9090 Data Sheet
Contents
Key Features .................................................................................................................1
Applications...................................................................................................................1
Description ....................................................................................................................1
1. Pin Out .....................................................................................................................5
1.1 Pin Assignment ...............................................................................................5
1.2 Pin Descriptions ..............................................................................................6
2. Electrical Characteristics ........................................................................................12
2.1 Absolute Maximum Ratings ..........................................................................12
2.2 DC Electrical Characteristics ........................................................................12
2.3 AC Electrical Characteristics.........................................................................13
2.4 Solder Reflow Profiles...................................................................................16
2.5 Host Interface Map........................................................................................17
2.5.1 Host Interface Map (R/W registers) ....................................................18
2.5.2 Host Interface Map (Read only registers) ...........................................19
3. Detailed Description ...............................................................................................20
3.1 Functional Overview .....................................................................................20
3.2 Serial Digital Input .........................................................................................21
3.3 Clock and Data Recovery .............................................................................21
3.3.1 Internal VCO and Phase Detector ......................................................21
3.4 Serial-To-Parallel Conversion .......................................................................21
3.5 Modes Of Operation......................................................................................22
3.5.1 Lock Detect.........................................................................................22
3.5.2 Auto Mode ..........................................................................................24
3.5.3 Manual Mode ......................................................................................25
3.6 SMPTE Functionality ....................................................................................25
3.6.1 SMPTE Descrambling and Word Alignment .......................................26
3.6.2 Internal Flywheel.................................................................................26
3.6.3 Switch Line Lock Handling..................................................................27
3.6.4 HVF Timing Signal Generation ...........................................................28
3.7 DVB-ASI Functionality ..................................................................................29
3.7.1 DVB-ASI 8b/10b Decoding .................................................................29
3.7.2 Status Signal Outputs .........................................................................29
3.8 Data-Through functionality............................................................................29
3.9 Additional Processing Features ....................................................................30
3.9.1 FIFO Load Pulse.................................................................................30
3.9.2 Ancillary Data Detection and Indication ..............................................31
3.9.3 EDH Packet Detection ........................................................................33
3.9.4 EDH Flag Detection ............................................................................33
3.9.5 SMPTE 352M Payload Identifier.........................................................36
3.9.6 Automatic Video Standard and Data Format Detection ......................37
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GS9090 Data Sheet
3.9.7 Error Detection and Indication ............................................................38
3.9.8 Error Correction and Insertion ............................................................43
3.10 Internal FIFO Operation ..............................................................................46
3.10.1 Video Mode.......................................................................................46
3.10.2 DVB-ASI Mode .................................................................................48
3.10.3 Ancillary Data Extraction Mode.........................................................51
3.10.4 Bypass Mode ....................................................................................54
3.11 Parallel Data Outputs ..................................................................................55
3.11.1 Parallel Data Bus ..............................................................................55
3.11.2 Parallel Output in SMPTE Mode .......................................................56
3.11.3 Parallel Output in DVB-ASI Mode.....................................................56
3.11.4 Parallel Output in Data-Through Mode .............................................56
3.12 Programmable Multi-Function Outputs .......................................................56
3.13 GS9090 Low-latency Mode.........................................................................58
3.14 GSPI Host Interface ....................................................................................59
3.14.1 Command Word Description.............................................................60
3.14.2 Data Read and Write Timing ............................................................60
3.14.3 Configuration and Status Registers ..................................................62
3.15 Reset Operation..........................................................................................63
3.16 JTAG Operation ..........................................................................................63
3.17 Device Power Up ........................................................................................64
4. References & Relevant Standards.........................................................................65
5. Application Information...........................................................................................66
5.1 Typical Application Circuit (Part A) ...............................................................66
5.2 Typical Application Circuit (Part B) ...............................................................67
6. Package & Ordering Information............................................................................68
6.1 Package Dimensions ....................................................................................68
6.2 Recommended PCB Footprint ......................................................................69
6.3 Packaging Data.............................................................................................69
6.4 Ordering Information .....................................................................................69
7. Revision History .....................................................................................................70
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GS9090 Data Sheet
1. Pin Out
VCO_VDD
FIFO_EN
FW_EN
AUTO/MAN
SMPTE_BYPASS
CORE_GND
DVB_ASI
LOCKED
CORE_VDD
PCLK
IO_VDD
PLL_GND
LB_CONT
1
VCO_GND
LF-
LF+
1.1 Pin Assignment
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
IO_GND
2
41
DOUT9
PLL_VDD
3
40
DOUT8
BUFF_VDD
4
39
DOUT7
DDI
5
38
DOUT6
DDI
6
37
DOUT5
BUFF_GND
7
36
DOUT4
TERM
8
35
DOUT3
NC
9
34
DOUT2
33
DOUT1
32
DOUT0
GS9090
XXXXE3
YYWW
GENNUM
CORE_VDD
14
15
16
17
18
19
20
21
22
23
24
25
26
27
29
28
IO_GND
IO_VDD
RESET
STAT3
RD_CLK
STAT2
30
STAT1
13
IO_GND
JTAG/HOST
STAT0
RD_RESET
DATA_ERROR
31
IO_VDD
12
SDIN_TDI
IOPROC_EN
SDOUT_TDO
11
CORE_GND
NC
SCLK_TCK
10
CS_TMS
VBG
Center Pad
(bottom of package)
Figure 1-1: Pin Assignment
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GS9090 Data Sheet
1.2 Pin Descriptions
Table 1-1: Pin Descriptions
Pin
Number
Name
Timing
Type
Description
1
LF-
Analog
Input
Loop filter component connection. Connect to pin 56 (LF+) as shown in
the Typical Application Circuit (Part B) on page 67.
2
PLL_GND
Analog
Input
Ground connection for phase-locked loop. Connect to GND.
Power
3
PLL_VDD
Analog
Input
Power supply connection for phase-locked loop. Connect to +1.8V DC.
Power
4
BUFF_VDD
Analog
Input
Power supply connection for digital input buffers.
Power
When operating with 1.8V input as required by the current silicon this
pin should be left unconnected.
When operating with 3.3V input (available in future silicon) this pin
should be connected to +3.3V as shown in the Typical Application
Circuit (Part B) on page 67.
5, 6
7
DDI, DDI
Analog
Input
Serial digital differential input pair.
BUFF_GND
Analog
Input
Ground connection for serial digital input buffer. Connect to GND.
Power
8
TERM
Analog
Input
Termination for serial digital input. AC couple to BUFF_GND
NC
–
–
No connect.
10
VBG
Analog
Input
Bandgap filter capacitor. Connect to GND as shown in the Typical
Application Circuit (Part B) on page 67.
12
IOPROC_EN
Non
Synchronous
Input
CONTROL SIGNAL INPUT
Signal Levels are LVCMOS / LVTTL compatible.
9, 11
Used to enable or disable the I/O processing features.
When set HIGH, the following I/O processing features of the device are
enabled:
• Illegal Code Remapping
• EDH CRC Error Correction
• Ancillary Data Checksum Error Correction
• TRS Error Correction
• EDH Flag Detection
To enable a subset of these features, keep the IOPROC_EN pin HIGH
and disable the individual feature(s) in the IOPROC_DISABLE register
accessible via the host interface.
When set LOW, the device will enter low-latency mode.
NOTE: When the internal FIFO is configured for Video mode or
Ancillary Data Extraction mode, the IOPROC_EN pin must be set
HIGH (see Internal FIFO Operation on page 46).
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GS9090 Data Sheet
Table 1-1: Pin Descriptions (Continued)
Pin
Number
13
Name
Timing
Type
Description
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, SCLK_TCK, SDOUT_TDO, and SDIN_TDI
are configured for JTAG boundary scan testing.
When set LOW, CS_TMS, SCLK_TCK, SDOUT_TDO, and SDIN_TDI
are configured as GSPI pins for normal host interface operation.
14
RESET
Non
Synchronous
Input
CONTROL SIGNAL INPUT
Signal levels are LVCMOS / LVTTL compatible.
Used to reset the internal operating conditions to default setting or 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 output signals become high impedance with the
exception of the STAT pins and the DATA_ERROR pin which will
maintain the last state they were in for the duration that RESET is
asserted.
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.
NOTE: See Device Power Up on page 64 for power on reset
requirements.
15, 45
16
CORE_VDD
CS_TMS
Non
Synchronous
Input
Power supply for digital logic blocks. Connect to +1.8V DC.
Power
NOTE: For power sequencing requirements, see Device Power Up on
page 64.
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.
17
SCLK_TCK
Non
Synchronous
Input
CONTROL SIGNAL INPUT
Signal levels are LVCMOS / LVTTL compatible.
Serial Data Clock / Test Clock. All JTAG / Host Interface address and
data are shifted into/out of the device synchronously with this clock.
Host Mode (JTAG/HOST = LOW):
SCLK_TCK operates as the host interface serial data clock, SCLK.
JTAG Test Mode (JTAG/HOST = HIGH):
SCLK_TCK operates as the JTAG test clock, TCK.
18, 48
CORE_GND
Non
Synchronous
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Input
Ground connection for digital logic blocks. Connect to GND.
Power
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GS9090 Data Sheet
Table 1-1: Pin Descriptions (Continued)
Pin
Number
19
Name
Timing
Type
Description
SDOUT_TDO
Synchronous
with
SCLK_TCK
Output
CONTROL SIGNAL INPUT
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.
20
SDIN_TDI
Synchronous
with
SCLK_TCK
Input
CONTROL SIGNAL INPUT
Signal levels are LVCMOS / LVTTL compatible.
Serial Data Input / 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.
21, 29, 43
IO_VDD
Non
Synchronous
Input
Power supply for digital I/O.
Power
For a 3.3V tolerant I/O, connect pins to either +1.8V DC or +3.3V DC.
For a 5V tolerant I/O, connect pins to a +3.3V DC.
NOTE: For power sequencing requirements, see Device Power Up on
page 64.
22
DATA_ERROR
Synchronous
with PCLK
Output
STATUS SIGNAL OUTPUT.
Signal levels are LVCMOS / LVTTL compatible.
The DATA_ERROR signal will be LOW when an error within the
received data stream has been detected by the device. This pin is an
inverted logical ‘OR’ing of all detectable errors listed in the internal
ERROR_STATUS register.
Once an error is detected, DATA_ERROR will remain LOW until the
start of the next video frame / field, or until the ERROR_STATUS
register is read via the host interface.
The DATA_ERROR signal will be HIGH when the received data stream
has been detected without error.
NOTE: It is possible to program which error conditions are monitored
by the device by setting appropriate bits in the ERROR_MASK register
HIGH. All error conditions are detected by default.
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GS9090 Data Sheet
Table 1-1: Pin Descriptions (Continued)
Pin
Number
23, 25, 26, 27
Name
Timing
Type
Description
STAT[0:3]
Synchronous
with PCLK or
RD_CLK
Output
MULTI FUNCTION I/O PORT
Signal levels are LVCMOS / LVTTL compatible.
Programmable multi-function outputs. By programming the bits is the
IO_CONFIG register, each pin can output one of the following signals:
• H
• V
• F
• FIFO_LD
• ANC_DETECT
• EDH_DETECT
• FIFO_FULL
• FIFO_EMPTY
These pins are set to certain default values depending on the
configuration of the device and the internal FIFO mode selected. See
Programmable Multi-Function Outputs on page 56 for details.
24, 28, 42
IO_GND
Non
Synchronous
Input
Power
Ground connection for digital I/O. Connect to GND.
30
RD_CLK
–
Input
FIFO READ CLOCK
Signal levels are LVCMOS / LVTTL compatible.
The application layer clocks the parallel data out of the FIFO on the
rising edge of RD_CLK.
31
RD_RESET
Synchronous
with RD_CLK
Input
FIFO READ RESET
Signal levels are LVCMOS / LVTTL compatible.
Valid input only when the device is in SMPTE mode (SMPTE_BYPASS
= HIGH and DVB-ASI = LOW), and the internal FIFO is configured for
video mode (see Video Mode on page 46).
A HIGH to LOW transition will reset the FIFO pointer to address zero of
the memory.
32 - 41
DOUT[0:9]
Synchronous
with RD_CLK
or PCLK
Output
PARALLEL VIDEO DATA BUS
Signal levels are LVCMOS / LVTTL compatible.
When the internal FIFO is enabled and configured for either video
mode or DVB-ASI mode, parallel data will be clocked out of the device
on the rising edge of RD_CLK.
When the internal FIFO is in bypass mode, parallel data will be clocked
out of the device on the rising edge of PCLK.
DOUT9 is the MSB and DOUT0 is the LSB.
44
PCLK
–
Output
PIXEL CLOCK OUTPUT
Signal levels are LVCMOS / LVTTL compatible.
27MHz parallel clock output.
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GS9090 Data Sheet
Table 1-1: Pin Descriptions (Continued)
Pin
Number
46
Name
Timing
Type
Description
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 reclocker has
achieved lock in Data-Through mode.
It will be LOW otherwise. When the signal is LOW, all digital output
signals will be forced to logic LOW levels.
47
DVB_ASI
Non
Synchronous
Input /
Output
CONTROL SIGNAL INPUT / STATUS SIGNAL OUTPUT
Signal levels are LVCMOS / LVTTL compatible.
This pin is an input set by the application layer in Manual mode, and an
output set by the device in Auto mode.
Auto Mode (AUTO/MAN = HIGH):
The DVB_ASI signal will be HIGH only when the device has locked to a
DVB-ASI compliant data stream. It will be LOW otherwise.
Manual Mode (AUTO/MAN = LOW):
When the application layer sets this pin HIGH, the device will be
configured to operate in DVB-ASI mode. The SMPTE_BYPASS pin will
be ignored.
When set LOW, the device will not support the decoding or word
alignment of received DVB-ASI data.
49
SMPTE_BYPASS
Non
Synchronous
Input /
Output
CONTROL SIGNAL INPUT / STATUS SIGNAL OUTPUT
Signal levels are LVCMOS / LVTTL compatible.
This pin is an input set by the application layer in Manual mode, and an
output set by the device in Auto mode.
Auto Mode (AUTO/MAN = HIGH):
The SMPTE_BYPASS signal will be HIGH only when the device has
locked to a SMPTE compliant data stream. It will be LOW otherwise.
When the signal is LOW, no I/O processing features are available.
Manual Mode (AUTO/MAN = LOW):
When the application layer sets this pin 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 the SMPTE_BYPASS pin is set LOW, the device will not support
the descrambling, decoding, or word alignment of received SMPTE
data. No I/O processing features will be available.
50
AUTO/MAN
Non
Synchronous
Input
CONTROL SIGNAL INPUT
Signal levels are LVCMOS / LVTTL compatible.
When set HIGH, the GS9090 will operate in Auto mode. The DVB_ASI
and SMPTE_BYPASS pins become output status signals set by the
device. In this mode, the GS9090 will automatically detect, reclock,
deserialize, and process SMPTE or DVB-ASI compliant input data.
When set LOW, the GS9090 will operate in Manual mode. The
DVB_ASI and SMPTE_BYPASS pins become input control signals. In
this mode, the application layer must set these two external pins for the
correct reception of either SMPTE or DVB-ASI data. Manual mode also
supports the reclocking and deserializing of data not conforming to
SMPTE or DVB-ASI streams.
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GS9090 Data Sheet
Table 1-1: Pin Descriptions (Continued)
Pin
Number
Name
Timing
Type
Description
51
FW_EN
Non
Synchronous
Input
CONTOL SIGNAL INPUT
Signal levels are LVCMOS / LVTTL compatible.
Used to enable or disable the noise immune flywheel of the device.
When set HIGH, the internal flywheel is enabled. This flywheel is used
in the extraction of timing signals, the generation of TRS signals, the
automatic detection of video standards, and in manual switch line lock
handling.
When set LOW, the internal flywheel is disabled. Timing based TRS
errors will not be detected.
52
FIFO_EN
Non
Synchronous
Input
CONTOL SIGNAL INPUT
Signal levels are LVCMOS / LVTTL compatible.
Used to enable / disable the internal FIFO.
When FIFO_EN is HIGH, the internal FIFO will be enabled. Data will be
clocked out of the device on the rising edge of the RD_CLK input pin if
the FIFO is in video mode or DVB-ASI mode.
When FIFO_EN is LOW, the internal FIFO is bypassed and parallel
data is clocked out on the rising edge of the PCLK output.
53
VCO_VDD
Analog
Input
Power
Power supply connection for Voltage-Controlled-Oscillator. Connect to
+1.8V DC.
54
LB_CONT
Analog
Input
CONTROL SIGNAL INPUT
Control voltage to fine-tune the loop bandwidth of the PLL.
55
VCO_GND
Analog
Input
Power
Ground connection for Voltage-Controlled-Oscillator. Connect to GND.
56
LF+
Analog
Input
Loop filter component connection. Connect to pin 1 (LF-) as shown in
the Typical Application Circuit (Part B) on page 67.
–
Center Pad
–
Power
Connect to GND following the Recommended PCB Footprint on
page 69
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GS9090 Data Sheet
2. Electrical Characteristics
2.1 Absolute Maximum Ratings
Table 2-1: Absolute Maximum Ratings
Parameter
Value/Units
Supply Voltage Core
-0.3V to +2.1V
Supply Voltage I/O
-0.3V to +3.47V
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
ESD protection on all pins (see note 2)
1kV
NOTES:
1. See reflow solder profile
2. HBM, per JESDA - 114B
2.2 DC Electrical Characteristics
Table 2-2: DC Electrical Characteristics
VDD = 1.8V, TA = 0°C to 70°C, unless otherwise specified.
Parameter
Symbol
Condition
Min
Typ
Max
Units
Notes
Operating Temperature Range
TA
–
0
25
70
°C
1
Core power supply voltage
CORE_VDD
–
1.71
1.8
1.89
V
–
Digital I/O Buffer Power Supply
Voltage
IO_VDD
1.8V Operation
1.71
1.8
1.89
V
–
IO_VDD
3.3V Operation
3.13
3.3
3.47
V
–
PLL Power Supply Voltage
PLL_VDD
–
1.71
1.8
1.89
V
–
VCO Power Supply Voltage
VCO_VDD
–
1.71
1.8
1.89
V
–
Typical System Power
PD
CORE_VDD = 1.8V
IO_VDD = 1.8V
–
145
–
mW
–
–
–
200
mW
–
System
T = 25oC
Max. System Power
PD
CORE_VDD = 1.89V
IO_VDD = 3.47V
T = 70oC
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GS9090 Data Sheet
Table 2-2: DC Electrical Characteristics (Continued)
VDD = 1.8V, TA = 0°C to 70°C, unless otherwise specified.
Parameter
Symbol
Condition
Min
Typ
Max
Units
Notes
Input Voltage, Logic LOW
VIL
1.8V Operation or
3.3V Operation
–
–
0.35 x
IO_VDD
V
–
Input Voltage, Logic HIGH
VIH
1.8V Operation or
3.3V Operation
0.65 x
IO_VDD
–
–
V
–
Output Voltage, Logic LOW
VOL
IOL = 8mA @ 3.3V,
4mA @ 1.8V
–
–
0.4
V
–
Output Voltage, Logic HIGH
VOH
IOL = -8mA @ 3.3V,
-4mA @ 1.8V
IO_VDD 0.4
–
–
V
–
RIN
–
37.5
50
62.5
Ω
–
Digital I/O
Serial Digital Input
Input Termination Resistance
NOTES:
1. All DC and AC electrical parameters within specification.
2.3 AC Electrical Characteristics
Table 2-3: AC Electrical Characteristics
VDD = 1.8V, TA = 0°C to 70°C, unless otherwise specified.
Parameter
Symbol
Condition
Min
Typ
Max
Units
Notes
Asynchronous Lock Time (LOCKED
signal set HIGH)
tLOCK
Input jitter of 0.2UI,
No data to SMPTE,
SMPTE_BYPASS = HIGH
DVB_ASI = LOW,
at 25°C
–
–
235
us
1
Asynchronous Lock Time (LOCKED
signal set HIGH)
tLOCK
Input jitter of 0.2UI,
No data to DVB-ASI,
SMPTE_BYPASS = HIGH
DVB_ASI = HIGH,
at 25°C
–
–
185
us
1
Asynchronous Lock Time (LOCKED
signal set HIGH)
tLOCK
Input jitter of 0.2UI,
No data to non-SMPTE,
SMPTE_BYPASS = LOW
DVB_ASI = LOW,
at 25°C
–
–
165
us
1
System
28201 - 1
July 2005
13 of 70
GS9090 Data Sheet
Table 2-3: AC Electrical Characteristics (Continued)
VDD = 1.8V, TA = 0°C to 70°C, unless otherwise specified.
Parameter
Symbol
Condition
Min
Typ
Max
Units
Notes
Serial Input Data Rate
DRSDI
–
–
270
–
Mb/s
–
Serial Input Jitter Tolerance
IJT
–
–
0.4
–
UI
2
Serial Digital Input Signal Swing
ΔVDDI
Differential with
400
800
1700
mVp-p
3
Serial Digital Input
internal 100Ω input
termination
Parallel Output
Parallel Output Clock Frequency
fPCLK
–
–
27
–
MHz
–
Parallel Output Clock Duty Cycle
DCPCLK
–
40
–
60
%
–
Variation of Parallel Output Clock
(from 27MHz)
–
Device Unlocked
-7.5
–
+7.5
%
4
TA = -20°C to +85°C
IO_VDD = 1.8V
Output Data Hold Time
tOH
With 15pF load
3.0
–
–
ns
5
Output Delay Time
tOD
With 15pF load
–
–
10.0
ns
5
GSPI Input Clock Frequency
fGSPI
–
–
–
54.0
MHz
–
GSPI Clock Duty Cycle
DCGSPI
–
40
–
60
%
–
GSPI Setup Time
tGS
–
1.5
–
–
ns
–
GSPI Hold Time
tGH
–
–
–
1.5
ns
–
GSPI
NOTES:
1.
2.
3.
4.
No signal to signal present, or a switch from another data rate to 270Mb/s.
Power supply noise 50mVpp at 15kHz, 100kHz, 1MHz sinusoidal modulation.
See Figure 2-1.
When the serial input to the GS9090 is removed, the PCLK output signal will continue to operate at 27MHz and the internal VCO will
remain at this frequency within +/- 7.5% over the range -20oC to +85oC.
5. Timing includes the following outputs: DOUT[9:0], STAT[3:0]. When the FIFO is enabled, the outputs are measured with respect to
RD_CLK.
28201 - 1
July 2005
14 of 70
GS9090 Data Sheet
VDD
VDD _ ΔVDDI
2
ΔVDDI
2
Single-Ended Swing (DDI)
ΔVDDI
2
Single-Ended Swing (DDI)
ΔVDDI
Differential Swing (DDI-DDI)
VDD
VDD _ ΔVDDI
2
+
ΔVDDI
2
0
_ ΔVDDI
2
Figure 2-1: Serial Digital Input Signal Swing
28201 - 1
July 2005
15 of 70
GS9090 Data Sheet
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. MSL qualification was
performed using the maximum Pb-free reflow profile shown in Figure 2-2. The
recommended standard eutectic reflow profile is shown in Figure 2-3.
Temperature
60-150 sec.
20-40 sec.
260˚C
250˚C
3˚C/sec max
217˚C
6˚C/sec max
200˚C
150˚C
25˚C
Time
60-180 sec. max
8 min. max
Figure 2-2: Maximum Pb-free Solder Reflow Profile (Preferred)
60-150 sec.
Temperature
10-20 sec.
230˚C
220˚C
3˚C/sec max
183˚C
6˚C/sec max
150˚C
100˚C
25˚C
Time
120 sec. max
6 min. max
Figure 2-3: Standard Eutectic Solder Reflow Profile (Pb-free package)
28201 - 1
July 2005
16 of 70
10h
VIDEO_FORMAT_OUT_B(4,3)
04h
03h
02h
01h
00h
IO_CONFIG
DATA_FORMAT
EDH_FLAG_OUT
EDH_FLAG_IN
ERROR_STATUS
IOPROC_DISABLE
ANC-UES
Not Used
Not Used
Not Used
Not Used
Not Used
ANC-UES_IN
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
b14
b14
b14
b14
b14
VFO2-b6
VFO4-b6
Not Used
b15
b15
b15
b15
b15
VFO2-b7
VFO4-b7
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
ANC-IDA_IN
ANC-IDA
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
b13
b13
b13
b13
b13
VFO2-b5
VFO4-b5
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
13
12
Not Used
Not Used
ANC-IDH_IN
ANC-IDH
Not Used
ANC_
DATA_
SWITCH
Not Used
Not Used
Not Used
Not Used
b12
b12
b12
b12
b12
VFO2-b4
VFO4-b4
Not Used
b12
b12
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
b12
b12
b12
b12
b12
b12
b12
b12
Not Used
b12
11
Not Used
Not Used
ANC-EDA_IN
ANC-EDA
EDH_
FLAG_
UPDATE
STAT3_
CONFIG
b2
Not Used
Not Used
Not Used
Not Used
b11
b11
b11
b11
b11
VFO2-b3
VFO4-b3
Not Used
b11
b11
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
b11
b11
b11
b11
b11
b11
b11
b11
Not Used
b11
10
Not Used
Not Used
ANC-EDH_IN
ANC-EDH
AP_CRC_V
STAT3_
CONFIG
b1
Not Used
Not Used
b10
b10
b10
b10
b10
b10
b10
VFO2-b2
VFO4-b2
b10
b10
b10
b10
b10
b10
b10
b10
b10
b10
b10
b10
b10
b10
b10
b10
b10
b10
b10
b10
Not Used
b10
28201 - 1
July 2005
NOTE: Addresses 02Ch to 42Bh store the contents of the internal FIFO. The contents may be accessed in Ancillary Data Extraction mode (see Section 3.10.3).
06h
05h
FIFO_EMPTY_OFFSET
07h
11h
RASTER_STRUCTURE1[10:0]
FIFO_FULL_OFFSET
12h
RASTER_STRUCTURE2[12:0]
08h
13h
RASTER_STRUCTURE3[12:0]
ANC_LINE_A[10:0]
14h
RASTER_STRUCTURE4[10:0]
09h
15h
AP_LINE_START_F0[10:0]
ANC_LINE_B[10:0]
16h
AP_LINE_END_F0[10:0]
0Ah
17h
AP_LINE_START_F1[10:0]
ANC_TYPE(1)[15:0]
18h
AP_LINE_END_F1[10:0]
0Bh
19h
FF_LINE_START_F0[10:0]
ANC_TYPE(2)[15:0]
1Ah
FF_LINE_END_F0[10:0]
0Ch
1Bh
FF_LINE_START_F1[10:0]
ANC_TYPE(3)[15:0]
1Ch
FF_LINE_END_F1[10:0]
0Dh
1Dh
AP_PIXEL_START_F0[12:0]
ANC_TYPE(4)[15:0]
1Eh
AP_PIXEL_END_F0[12:0]
0Fh
1Fh
AP_PIXEL_START_F1[12:0]
0Eh
20h
AP_PIXEL_END_F1[12:0]
ANC_TYPE(5)[15:0]
21h
FF_PIXEL_START_F0[12:0]
VIDEO_FORMAT_OUT_A(2,1)
22h
FF_PIXEL_END_F0[12:0]
Not Used
Not Used
Not Used
Not Used
24h
23h
FF_PIXEL_END_F1[12:0]
Not Used
Not Used
Not Used
Not Used
14
15
25h
26h
FF_PIXEL_START_F1[12:0]
ERROR_MASK_REGISTER
28h
FIFO_LD_POSITION[12:0]
27h
Address
Register Name
Table 2-4: Host Interface Map
2.5 Host Interface Map
9
ANC_PKT_EX
T
Not Used
FF-UES_IN
FF-UES
FF_CRC_V
STAT3_
CONFIG
b0
b9
b9
b9
b9
b9
b9
b9
b9
b9
VFO2-b1
VFO4-b1
b9
b9
b9
b9
b9
b9
b9
b9
b9
b9
b9
b9
b9
b9
b9
b9
b9
b9
b9
b9
Not Used
b9
8
FIFO_
MODE
b1
Not Used
FF-IDA_IN
FF-IDA
EDH_
DETECT
STAT2_
CONFIG
b2
b8
b8
b8
b8
b8
b8
b8
b8
b8
VFO2-b0
VFO4-b0
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
Not Used
b8
7
FIFO_
MODE
b0
Not Used
FF-IDH_IN
FF-IDH
VERSION_35
2M
STAT2_
CONFIG
b1
b7
b7
b7
b7
b7
b7
b7
b7
b7
VFO1-b7
VFO3-b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
Not Used
b7
6
H_
CONFIG
VD_STD_
ERR
FF-EDA_IN
FF-EDA
Not Used
STAT2_
CONFIG
b0
b6
b6
b6
b6
b6
b6
b6
b6
b6
VFO1-b6
VFO3-b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
VD_STD_
ERR_
MASK
b6
5
Not Used
FF_CRC_
ERR
FF-EDH_IN
FF-EDH
Not Used
STAT1_
CONFIG
b2
b5
b5
b5
b5
b5
b5
b5
b5
b5
VFO1-b5
VFO3-b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
FF_CRC_
ERR_
MASK
b5
4
Not Used
AP_CRC_
ERR
AP-UES_IN
AP-UES
STD_
LOCK
STAT1_
CONFIG
b1
b4
b4
b4
b4
b4
b4
b4
b4
b4
VFO1-b4
VFO3-b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
AP_CRC_
ERR_
MASK
b4
ILLEGAL_RE
MAP
LOCK_
ERR
AP-IDA_IN
AP-IDA
DATA_
FORMAT
b3
STAT1_
CONFIG
b0
b3
b3
b3
b3
b3
b3
b3
b3
b3
VFO1-b3
VFO3-b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
LOCK_
ERR_
MASK
b3
3
EDH_CRC_IN
S
CCS_ERR
AP-IDH_IN
AP-IDH
DATA_
FORMAT
b2
STAT0_
CONFIG
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
VFO1-b2
VFO3-b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
CCS_ERR_M
ASK
b2
2
0
TRS_IN
EAV_ERR
AP-EDH_IN
AP-EDH
DATA_
FORMAT
b0
STAT0_
CONFIG
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
VFO1-b0
VFO3-b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
EAV_ERR_MA
SK
b0
17 of 70
ANC_
CSUM_
INS
SAV_ERR
AP-EDA_IN
AP-EDA
DATA_
FORMAT
b1
STAT0_
CONFIG
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
VFO1-b1
VFO3-b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
SAV_ERR_MA
SK
b1
1
GS9090 Data Sheet
22h
21h
20h
1Fh
1Eh
1Dh
1Ch
1Bh
1Ah
19h
18h
17h
16h
15h
FF_PIXEL_END_F0[12:0]
FF_PIXEL_START_F0[12:0]
AP_PIXEL_END_F1[12:0]
AP_PIXEL_START_F1[12:0]
AP_PIXEL_END_F0[12:0]
AP_PIXEL_START_F0[12:0]
FF_LINE_END_F1[10:0]
FF_LINE_START_F1[10:0]
FF_LINE_END_F0[10:0]
FF_LINE_START_F0[10:0]
AP_LINE_END_F1[10:0]
AP_LINE_START_F1[10:0]
AP_LINE_END_F0[10:0]
AP_LINE_START_F0[10:0]
04h
DATA_FORMAT
00h
01h
02h
b15
b15
b15
b15
b15
15
b14
b14
b14
b14
b14
14
b13
b13
b13
b13
b13
13
ANC_
DATA_
SWITCH
b12
b12
b12
b12
b12
b12
b12
b12
b12
b12
b12
b12
EDH_
FLAG_
UPDATE
STAT3_
CONFIG
b2
b11
b11
b11
b11
b11
b11
b11
b11
b11
b11
b11
b11
b11
b12
b12
11
b11
12
10
28201 - 1
July 2005
9
STAT3_
CONFIG
b1
b10
b10
b10
b10
b10
b10
ANC_PKT_EX
T
STAT3_
CONFIG
b0
b9
b9
b9
b9
b9
b9
b9
b9
b9
b9
b10
b10
b9
b10
b9
b9
b10
b10
b9
b9
b9
b9
b9
b9
b9
b9
b9
b9
b9
b9
b9
b10
b10
b10
b10
b10
b10
b10
b10
b10
b10
b10
b10
b10
NOTE: Addresses 02Ch to 42Bh store the contents of the internal FIFO. The contents may be accessed in Ancillary Data Extraction mode (see Section 3.10.3).
IOPROC_DISABLE
05h
IO_CONFIG
03h
06h
09h
ANC_LINE_B[10:0]
FIFO_EMPTY_OFFSET
0Ah
ANC_TYPE(1)[15:0]
08h
0Bh
ANC_TYPE(2)[15:0]
07h
0Ch
ANC_TYPE(3)[15:0]
FIFO_FULL_OFFSET
0Dh
ANC_TYPE(4)[15:0]
ANC_LINE_A[10:0]
0Eh
ANC_TYPE(5)[15:0]
0Fh
10h
11h
12h
13h
14h
24h
23h
FF_PIXEL_END_F1[12:0]
25h
26h
FF_PIXEL_START_F1[12:0]
ERROR_MASK_REGISTER
28h
FIFO_LD_POSITION[12:0]
27h
Address
Register Name
Table 2-5: Host Interface Map (R/W registers)
2.5.1 Host Interface Map (R/W registers)
8
FIFO_
MODE
b1
STAT2_
CONFIG
b2
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
b8
7
FIFO_
MODE
b0
STAT2_
CONFIG
b1
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
6
H_
CONFIG
STAT2_
CONFIG
b0
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
b6
VD_STD_
ERR_
MASK
b6
5
STAT1_
CONFIG
b2
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
b5
FF_CRC_
ERR_
MASK
b5
4
STAT1_
CONFIG
b1
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
b4
AP_CRC_
ERR_
MASK
b4
ILLEGAL_RE
MAP
STAT1_
CONFIG
b0
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
b3
LOCK_
ERR_
MASK
b3
3
EDH_CRC_IN
S
STAT0_
CONFIG
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
b2
CCS_ERR_M
ASK
b2
2
0
TRS_IN
STAT0_
CONFIG
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
EAV_ERR_MA
SK
b0
18 of 70
ANC_
CSUM_
INS
STAT0_
CONFIG
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
b1
SAV_ERR_MA
SK
b1
1
GS9090 Data Sheet
13h
12h
11h
10h
0Fh
RASTER_STRUCTURE2[12:0]
RASTER_STRUCTURE1[10:0]
VIDEO_FORMAT_OUT_B(4,3)
VIDEO_FORMAT_OUT_A(2,1)
03h
02h
01h
EDH_FLAG_OUT
EDH_FLAG_IN
ERROR_STATUS
Not Used
Not Used
VFO2-b7
VFO4-b7
15
ANC-UES
_IN
ANC-UES
VFO2-b6
VFO4-b6
14
ANC-IDA
_IN
ANC-IDA
VFO2-b5
VFO4-b5
13
ANC-IDH
_IN
ANC-IDH
VFO2-b4
VFO4-b4
b12
b12
12
ANC-EDA
_IN
ANC-EDA
VFO2-b3
VFO4-b3
b11
b11
11
ANC-EDH
_IN
ANC-EDH
AP_CRC_V
VFO2-b2
VFO4-b2
b10
b10
b10
b10
10
28201 - 1
July 2005
NOTE: Addresses 02Ch to 42Bh store the contents of the internal FIFO. The contents may be accessed in Ancillary Data Extraction mode (see Section 3.10.3).
00h
04h
DATA_FORMAT
05h
06h
07h
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
14h
RASTER_STRUCTURE3[12:0]
15h
16h
17h
18h
19h
1Ah
1Bh
1Ch
1Dh
1Eh
1Fh
20h
21h
22h
23h
24h
25h
26h
27h
28h
Address
RASTER_STRUCTURE4[10:0]
Register Name
Table 2-6: Host Interface Map (Read only registers)
2.5.2 Host Interface Map (Read only registers)
FF-UES_IN
FF-UES
FF_CRC_V
VFO2-b1
VFO4-b1
b9
b9
b9
b9
9
FF-IDA_IN
FF-IDA
EDH_
DETECT
VFO2-b0
VFO4-b0
b8
b8
b8
b8
8
FF-IDH_IN
FF-IDH
VERSION_35
2M
VFO1-b7
VFO3-b7
b7
b7
b7
b7
7
VD_STD_
ERR
FF-EDA_IN
FF-EDA
VFO1-b6
VFO3-b6
b6
b6
b6
b6
6
FF_CRC_
ERR
FF-EDH_IN
FF-EDH
VFO1-b5
VFO3-b5
b5
b5
b5
b5
5
AP_CRC_
ERR
AP-UES_IN
AP-UES
STD_
LOCK
VFO1-b4
VFO3-b4
b4
b4
b4
b4
4
LOCK_
ERR
AP-IDA_IN
AP-IDA
DATA_
FORMAT
b3
VFO1-b3
VFO3-b3
b3
b3
b3
b3
3
CCS_ERR
AP-IDH_IN
AP-IDH
DATA_
FORMAT
b2
VFO1-b2
VFO3-b2
b2
b2
b2
b2
2
EAV_ERR
AP-EDH_IN
AP-EDH
DATA_
FORMAT
b0
VFO1-b0
VFO3-b0
b0
b0
b0
b0
0
19 of 70
SAV_ERR
AP-EDA_IN
AP-EDA
DATA_
FORMAT
b1
VFO1-b1
VFO3-b1
b1
b1
b1
b1
1
GS9090 Data Sheet
GS9090 Data Sheet
3. Detailed Description
•
Functional Overview on page 20
•
Serial Digital Input on page 21
•
Clock and Data Recovery on page 21
•
Serial-To-Parallel Conversion on page 21
•
Modes Of Operation on page 22
•
SMPTE Functionality on page 25
•
DVB-ASI Functionality on page 29
•
Data-Through functionality on page 29
•
Additional Processing Features on page 30
•
Internal FIFO Operation on page 46
•
Parallel Data Outputs on page 55
•
Programmable Multi-Function Outputs on page 56
•
GS9090 Low-latency Mode on page 58
•
GSPI Host Interface on page 59
•
JTAG Operation on page 63
•
Device Power Up on page 64
3.1 Functional Overview
The GS9090 is a 270Mb/s reclocking deserializer with an internal FIFO and
programmable multi-function output port. The device has two basic modes of
operation which determine precisely how SMPTE or DVB-ASI compliant input data
streams are reclocked and processed.
In Auto mode (AUTO/MAN = HIGH), the GS9090 will automatically detect, reclock,
deserialize, and process SD SMPTE 259M-C, or DVB-ASI input data.
In Manual mode (AUTO/MAN = LOW), the application layer must set external
device pins for the correct reception of either SMPTE or DVB-ASI data. Manual
mode also supports the reclocking and deserializing of 270Mb/s data not
conforming to SMPTE or DVB-ASI streams.
The digital signal processing core implements several data processing functions
including error detection and correction 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.
The provided programmable multi-function output pins may be configured to output
various status signals including H, V, and F timing, ancillary data detection, EDH
detection, and a FIFO load pulse. The internal FIFO supports 4 modes of
operation, which may be used for data alignment / delay, MPEG packet extraction,
or ancillary data extraction.
The GS9090 contains a JTAG interface for boundary scan test implementations.
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GS9090 Data Sheet
3.2 Serial Digital Input
The GS9090 contains a current mode differential serial digital input buffer, allowing
the device to be connected to SMPTE 259M-C compliant serial digital input signals.
The input buffer has internal 50Ω termination resistors, which are connected to
ground via the TERM pin. If the input signal is AC coupled to the device, the signal
source common mode level will be set internally to approximately 1.45V.
3.3 Clock and Data Recovery
The output of the serial digital input buffer passes to the GS9090's internal
reclocker block. The function of this block is to lock to the input data stream, extract
a clean clock, and retime the serial digital data to remove high frequency jitter.
The operating centre frequency of the internal reclocker is 270Mb/s where the input
jitter tolerance (IJT) is +/- 0.2UI at this rate.
If the reclocker locks to the signal, it will provide internal pll_lock and carrier_detect
signals to the lock detect block of the device.
3.3.1 Internal VCO and Phase Detector
The GS9090 uses an internal VCO and PFD as part of the internal reclocker's
phase-locked loop. Each block requires a +1.8V DC power supply, which is
supplied via the VCO_VDD / VCO_GND and PLL_VDD / PLL_GND pins.
3.4 Serial-To-Parallel Conversion
The retimed data and phase-locked clock signals from the internal reclocker are
fed to the serial-to-parallel converter. The function of this block is to extract 10-bit
parallel data words from the reclocked serial data stream and simultaneously
present them to the SMPTE and DVB-ASI word alignment blocks.
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GS9090 Data Sheet
3.5 Modes Of Operation
The GS9090 has two basic modes of operation: Auto mode and Manual mode.
Auto mode is enabled when the application layer sets the AUTO/MAN pin HIGH,
and Manual mode is enabled when the AUTO/MAN pin is set LOW. As indicated
in Figure 3-1, each mode supports both SMPTE and DVB-ASI input signals. In
addition, Data-Through functionality is possible when the GS9090 is in Manual
mode.
SMPTE Functionality
Auto Mode
DVB-ASI Functionality
GS9090
SMPTE Functionality
Manual Mode
DVB-ASI Functionality
Data-Through
Functionality
Figure 3-1: GS9090’s Modes of Operation
3.5.1 Lock Detect
Once the internal reclocker has locked to the received serial digital data stream,
the lock detect block of the GS9090 searches for the appropriate sync words, and
indicates via the LOCKED output pin when the device has successfully achieved
lock. The LOCKED pin is designed to be stable. It will not toggle during the locking
process, nor will it glitch during a synchronous switch.
Lock detection is a continuous process, which begins after a system reset and
continues until the device is powered down or held in reset. This process is
summarized in Figure 3-2.
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GS9090 Data Sheet
Power Up
or RESET
Valid Serial
Digital Input?
Device
sets LOCKED
pin LOW
NO (Input data invalid)
YES
Device in Auto Mode?
(Device in
Manual Mode)
YES
Internal reclocker
locked?
NO
Device
sets SMPTE_BYPASS
and DVB_ASI pins LOW
Device
outputs 27MHz +/- 7.5%
clock on PCLK pin
YES
NO
SMPTE TRS or
DVB-ASI sync words
detected?
NO
Device
sets all other
output pins LOW
YES
Application layer must set SMPTE_BYPASS
and DVB_ASI pins to support different
functionalities.
Device sets
LOCKED pin HIGH
Device sets SMPTE_BYPASS
and DVB_ASI status pins
(Section 3.5.2)
Device outputs accurate
27MHz clock on PCLK pin
Figure 3-2: Lock Detection Process
The lock detection algorithm first determines if a valid serial digital input signal has
been presented to the device by sampling the internal carrier_detect signal. When
the serial data input is considered invalid the LOCKED pin will be set LOW, and all
device outputs will be forced LOW, except PCLK. The PCLK output frequency will
be 27MHz +/- 7.5% over the temperature range of -20oC to +85oC.
If a valid serial digital input signal has been detected, and the device is in Auto
mode, the lock algorithm will attempt to detect the presence of either SMPTE TRS
words or DVB-ASI sync words. Assuming that a valid 270Mb/s SMPTE or DVB-ASI
signal has been applied to the device, the LOCKED pin will be set HIGH and the
synchronous and asynchronous lock times will be as listed in the AC Electrical
Characteristics table.
In Manual mode, the application layer must set the SMPTE_BYPASS and
DVB_ASI pins appropriately so that the lock detect block will search for either
SMPTE TRS or DVB-ASI sync words. Synchronous and asynchronous lock times
are also listed in the AC Electrical Characteristics table.
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GS9090 Data Sheet
NOTE: The PCLK output will continue to operate at 27MHz +/- 7.5% during the lock
detection process. Only when the device is locked (LOCKED = HIGH) will the
PCLK output an accurate 27MHz signal.
For SMPTE and DVB-ASI inputs, the lock detect block will only assert the LOCKED
output pin HIGH if (1) the reclocker has locked to the input data stream, and (2)
TRS or DVB-ASI sync words have been correctly identified.
For serial inputs that do not conform to SMPTE or DVB-ASI formats, one of the
following will occur once the reclocker has locked:
1. In Manual mode, data will be passed directly to the parallel outputs without any
further processing taking place and the LOCKED signal will be asserted HIGH
if and only if the SMPTE_BYPASS and DVB_ASI input pins are set LOW (see
Data-Through functionality on page 29); or
2. In Auto mode, the LOCKED signal will be asserted LOW, the parallel outputs
will be set to logic LOW, and the SMPTE_BYPASS and DVB_ASI output
signals will also be set LOW.
If the internal reclocker does not lock to the input, the internal pll_lock signal will be
LOW, and the lock detect block will not search for sync words. The LOCKED signal
will be set LOW, and all device outputs except PCLK will be forced LOW. The
PCLK output frequency will be 27MHz +/- 7.5% over the temperature range of
-20oC to +85oC.
3.5.2 Auto Mode
Recall that the GS9090 is in Auto mode when the AUTO/MAN input pin is set HIGH
by the application layer. In this mode, SMPTE_BYPASS and DVB_ASI become
output status pins. Table 3-1 shows the status of these pins when different serial
digital video signals are applied.
Table 3-1: Auto Mode Output Status Signals
Pin Settings
Format
SMPTE_BYPASS
DVB_ASI
SD SMPTE
HIGH
LOW
DVB-ASI
LOW
HIGH
NOT SMPTE OR DVB-ASI*
LOW
LOW
*NOTE: In this case the device will not be locked (LOCKED = LOW), and all digital output pins
except PCLK will be set LOW (see Lock Detect on page 22)
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GS9090 Data Sheet
3.5.3 Manual Mode
Recall that the GS9090 is in Manual mode when the AUTO/MAN input pin is set
LOW by the application layer. In this mode the SMPTE_BYPASS and DVB_ASI
pins become input signals, and the application layer determines the operating
mode of the device by setting these pins as shown in Table 3-2
.
Table 3-2: Manual Mode Input Status Signals
Pin Settings
Format
SMPTE_BYPASS
DVB_ASI
SD SMPTE
HIGH
LOW
DVB-ASI
X
HIGH
NOT SMPTE OR DVB-ASI
(Data-Through mode)*
LOW
LOW
*NOTE: See Data-Through functionality on page 29 for more detail on Data-Through mode
3.6 SMPTE Functionality
The GS9090 enters SMPTE mode once the device has detected SMPTE TRS sync
words and locked to the input data stream as described in Lock Detect on page 22.
The GS9090 will remain in SMPTE mode until such time that SMPTE TRS sync
words fail to be detected.
The lock detect block may also drop out of SMPTE mode under any of the following
conditions:
•
SMPTE_BYPASS is asserted LOW in Manual mode
•
RESET is asserted LOW
•
LOCKED is LOW (i.e. the device loses lock to the input signal)
TRS word detection is a continuous process, and the device will identify both 8-bit
and 10-bit TRS words.
In Auto mode, the GS9090 sets the SMPTE_BYPASS pin HIGH and the DVB_ASI
pin LOW to indicate that it has locked to a SMPTE input data stream. When
operating in Manual mode, the application layer must assert the DVB_ASI pin LOW
and the SMPTE_BYPASS pin HIGH in order to enable SMPTE operation.
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GS9090 Data Sheet
3.6.1 SMPTE Descrambling and Word Alignment
After serial-to-parallel conversion, the internal 10-bit data bus is fed to the SMPTE
descramble and word alignment internal block. The function of this block is to carry
out NRZI-to-NRZ decoding, descrambling according to SMPTE 259M-C, and word
alignment of the data to the TRS sync words.
NOTE: When 8-bit data is embedded in the 10-bit SMPTE signal, the two LSBs
(DOUT[1:0]) must be set to zero for word alignment to work correctly.
Word alignment occurs when two consecutive valid TRS words (SAV and EAV
inclusive) with the same bit alignment have been detected (1 video line).
In normal operation, re-synchronization of the word alignment process will only
take place when two consecutive identical TRS word positions have been
detected. When automatic or manual switch line lock handling occurs (see Switch
Line Lock Handling on page 27), word alignment re-synchronization will occur on
the next received TRS code word.
The device will drop out of SMPTE mode, only after 6 consecutive missing TRS
timing words.
3.6.2 Internal Flywheel
The GS9090 has an internal flywheel for the generation of internal / external timing
signals, the detection and correction of certain error conditions, and the automatic
detection of video standards. The flywheel is only operational in SMPTE mode.
The flywheel 'learns' the video standard by monitoring the horizontal and vertical
reference information contained in the TRS ID words of the received video stream.
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 information to maintain synchronization.
The FW_EN input pin controls the synchronization mechanism of the flywheel.
When this input signal is LOW, the flywheel will re-synchronize all pixel and line
based counters on every received TRS ID word.
When FW_EN is held HIGH, re-synchronization of the pixel and line based
counters will take place after 3 consecutive video lines with identical TRS timing
are identified. This provides a measure of noise immunity for output timing signal
generation.
The flywheel will be disabled should the LOCKED signal or RESET signal be LOW.
This will occur regardless of the setting of the FW_EN pin.
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GS9090 Data Sheet
3.6.3 Switch Line Lock Handling
The principle of switch line lock handling is that the switching of synchronous video
sources will only disturb the horizontal timing and alignment of the stream, whereas
the vertical timing remains in synchronization.
To account for the horizontal disturbance caused by a synchronous switch, it is
necessary to re-synchronize the flywheel immediately after the switch has taken
place. Rapid re-synchronization of the GS9090 to the new video standard can be
achieved by controlling the flywheel using the FW_EN pin.
At every PCLK cycle the device samples the FW_EN pin. When the FW_EN pin is
set LOW anywhere within the active line, the flywheel will re-synchronize
immediately to the next TRS word.
The ability to manually re-synchronize the flywheel is also important when
switching asynchronous sources or to implement other non-standardized video
switching functions.
The GS9090 also implements automatic switch line lock handling. By utilizing both
the synchronous switch point defined in SMPTE RP168, and the automatic video
standards detect function, the device automatically re-synchronizes the flywheel at
the switch point. This will occur whether or not the device has detected TRS word
errors. Word alignment re-synchronization will also take place at this time.
Automatic switch line lock handling will occur regardless of the setting of the
FW_EN pin.
The switch line is as defined in Table 3-3.
Table 3-3: Switch Line Position for 270Mb/s Digital Systems
System
Video Format
Sampling
Signal
Standard
Parallel
Interface
Serial
Interface
Switch Line
Number
525
720x483/59.94 (2:1)
4:2:2
125M
125M
259M-C
10, 273
625
720x576/50 (2:1)
4:2:2
BT.656
125M
259M-C
6, 319
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GS9090 Data Sheet
3.6.4 HVF Timing Signal Generation
The GS9090 extracts critical timing parameters from either the received TRS
signals (FW_EN = LOW) or from the internal flywheel-timing generator (FW_EN =
HIGH).
Horizontal blanking period (H), vertical blanking period (V), and field odd / even
timing (F) are extracted and are available for output on any of the multi-function
output port pins, if so programmed (see Programmable Multi-Function Outputs on
page 56).
The H signal timing is configurable via the H_CONFIG bit of the internal
IOPROC_DISABLE register as either active line-based blanking, or TRS-based
blanking (see Table 3-14 in Error Correction and Insertion on page 43).
The default setting of this bit (after RESET has been asserted) is LOW.
Active line-based blanking is enabled when the H_CONFIG bit is set LOW. In this
mode, the H output is HIGH for the entire horizontal blanking period, including the
EAV and SAV TRS words. This is the default H timing used by the device.
When H_CONFIG is set HIGH, TRS based blanking is enabled. In this case, the H
output will be HIGH for the entire horizontal blanking period as indicated by the H
bit in the received TRS ID words.
The timing of these signals is shown in Figure 3-3.
NOTE 1: When the internal FIFO is configured for video mode, the H, V, and F
signals will be timed to the data output from the FIFO (see Video Mode on
page 46).
NOTE 2: When the GS9090 is configured for Low-latency mode, the H, V, and F
output timing will be TRS-based only as shown in GS9090 Low-latency Mode on
page 58. Active line-based timing is not available in this mode, and the setting of
the H_CONFIG host interface bit will be ignored.
PCLK
Y/Cr/Cb DATA OUT
3FF
000
000
XYZ
(eav)
3FF
000
000
XYZ
(sav)
H
V
F
H SIGNAL TIMING:
H_CONFIG = LOW (Default)
H_CONFIG = HIGH
Figure 3-3: H,V,F Timing
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GS9090 Data Sheet
3.7 DVB-ASI Functionality
The GS9090 enters DVB-ASI mode once the device has detected 32 consecutive
DVB-ASI words without a single word or disparity error being generated. The
device will remain in DVB-ASI mode until 32 consecutive DVB-ASI words or
disparity errors are detected, or until SMPTE TRS ID words have been detected.
The lock detect block may also drop out of DVB-ASI mode under the following
conditions:
•
RESET is asserted LOW
•
Both AUTO/MAN and DVB_ASI are asserted LOW
•
LOCKED pin is LOW (i.e. the device loses lock to the input signal)
K28.5 sync patterns in the received DVB-ASI data stream will be detected by the
device in either inverted or non-inverted form.
In Auto mode, the GS9090 sets the SMPTE_BYPASS pin LOW and the DVB_ASI
pin HIGH to indicate that it has locked to a DVB-ASI input data stream. When
operating in Manual mode, the application layer must set the DVB_ASI pin HIGH
to enable DVB-ASI operation. The SMPTE_BYPASS pin will be ignored.
3.7.1 DVB-ASI 8b/10b Decoding
After serial-to-parallel conversion, the internal 10-bit data bus is fed to the DVB-ASI
8b/10b decode and word alignment block. The function of this block is to word align
the data to the K28.5 sync characters, and 8b/10b decode and bit-swap the data
to achieve bit alignment with the data outputs.
The extracted 8-bit data will be presented to DOUT [7:0], bypassing all internal
SMPTE mode data processing.
3.7.2 Status Signal Outputs
In DVB-ASI mode, the DOUT9 and DOUT8 pins will be configured as DVB-ASI
status signals WORDERR and SYNCOUT respectively.
SYNCOUT will be HIGH whenever a K28.5 sync character is present on the output.
WORDERR will be HIGH whenever the device has detected an illegal code word
or there is a running disparity error.
3.8 Data-Through functionality
The GS9090 may be configured by the application layer to operate as a simple
serial-to-parallel converter. In this mode, the device presents data to the output
data bus without performing any decoding, descrambling, or word-alignment.
Data-Through functionality is enabled only when the application layer sets the
AUTO/MAN, SMPTE_BYPASS, and DVB_ASI input pins LOW. Under these
conditions, the lock detect block allows 270Mb/s input data not conforming to
SMPTE or DVB-ASI streams to be reclocked and deserialized. If the device is in
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GS9090 Data Sheet
Data-Through mode, and the internal reclocker locks to the data stream, the
LOCKED pin will be set HIGH.
If the application layer does not set the AUTO/MAN pin LOW, the GS9090 will set
the SMPTE_BYPASS and DVB_ASI signals to logic LOW if presented with a data
stream without SMPTE TRS ID words or DVB-ASI sync words. In addition, the
LOCKED pin and data bus output pins will be forced LOW.
3.9 Additional Processing Features
The GS9090 contains additional processing features that are available in SMPTE
mode only (see SMPTE Functionality on page 25).
3.9.1 FIFO Load Pulse
To aid in the implementation of auto-phasing and line synchronization functions,
the GS9090 will generate a FIFO load pulse to reset line-based FIFO storage. This
FIFO_LD signal is available for output on one of the multi-function output port pins,
if so programmed (see Programmable Multi-Function Outputs on page 56).
The FIFO_LD pulse will normally be HIGH, but will go LOW for one PCLK period,
thereby generating a FIFO write reset signal.
By default, the FIFO load pulse will be generated such that it is co-timed to the SAV
XYZ code word presented to the output data bus. This co-timing ensures that the
next PCLK cycle will correspond with the first active sample of the video line.
NOTE: When the internal FIFO of the GS9090 is set to operate in video mode, the
FIFO_LD pulse can be used to drive the RD_RESET input to the device (see Video
Mode on page 46).
Figure 3-4 shows the default timing relationship between the FIFO_LD signal and
the output video data.
PCLK
Y'CbCr DATA
3FF
000
000
XYZ
FIFO_LD
Figure 3-4: FIFO_LD Pulse Timing
3.9.1.1 Programmable FIFO Load Position
The position of the FIFO_LD pulse can be moved in PCLK increments from its
default position to a maximum of one full line. The offset number of PCLK's must
be programmed in the FIFO_LD_POSITION[12:0] internal register (address 28h),
via the host interface.
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GS9090 Data Sheet
The FIFO_LD_POSITION[12:0] register is designed to accommodate the longest
SD line length. If the user programs a value greater than the maximum line length
at the operating SD standard, the FIFO_LD pulse will not be generated.
After a device reset, the FIFO_LD_POSITION[12:0] register is set to zero and the
FIFO_LD pulse will assume the default timing.
3.9.2 Ancillary Data Detection and Indication
The GS9090 will detect all types of ancillary data in either the vertical or horizontal
data spaces. The ANC_DETECT status signal is provided to indicate the position
of ancillary data in the output data stream. This signal is available for output on the
multi-function output port pins, if so programmed (see Programmable
Multi-Function Outputs on page 56).
The ANC_DETECT status signal is synchronous with PCLK and can be used as a
clock enable to external logic, or as a write enable to an external FIFO or other
memory device. The ANC_DETECT signal will be asserted HIGH whenever
ancillary data is detected in the video data stream (see Figure 3-5). Both 8-bit and
10-bit ancillary data preambles will be detected by the GS9090.
NOTE 1: When the internal FIFO is configured for video mode, the ANC_DETECT
signal will be timed to the data output from the FIFO (see Video Mode on page 46).
NOTE 2: For performance in low latency mode, see GS9090 Low-latency Mode on
page 58.
PCLK
Y'CbCr DATA
000
3FF
3FF
DID
DBN
DC
ANC DATA
ANC DATA
CSUM
BLANK
ANC_DETECT
Figure 3-5: ANC_DETECT Status Signal
3.9.2.1 Programmable Ancillary Data Detection
Although the GS9090 will detect all types of ancillary data by default, it also allows
the application layer to specifically program up to five different ancillary data types
for detection. This is accomplished by setting the ANC_TYPE registers via the host
interface (see Table 3-4).
For each data type to be detected, the host interface must program the DID and/or
SDID of the ancillary data type of interest. The GS9090 will compare the received
DID and/or SDID with the programmed values and assert ANC only if an exact
match is found. The same timing shown in Figure 3-5 will be used.
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GS9090 Data Sheet
If any DID or SDID value is set to zero in the ANC_TYPE register, no comparison
or match will be made for that value. For example, if the DID is programmed but
the SDID is set to zero, the device will detect all ancillary data types matching the
DID value, regardless of the SDID. If both DID and SDID values are non-zero, then
the received ancillary data type must match both the DID and SDID cases before
the device will assert ANC_DETECT HIGH.
In the case where all five DID and SDID values are set to zero, the GS9090 will
detect all ancillary data types. This is the default setting after a device reset.
Where one or more, but less than five, DID and/or SDID values have been
programmed, then only those matching ancillary data types will be detected and
indicated.
NOTE: See SMPTE 291M for a definition of ancillary data terms.
Table 3-4: Host Interface Description for Programmable Ancillary Data Type registers
Register Name
Bit
Name
Description
ANC_TYPE 1
Address: 0Ah
15-8
ANC_TYPE1[15:8]
7-0
ANC_TYPE 2
Address: 0Bh
ANC_TYPE 3
Address: 0Ch
ANC_TYPE 4
Address: 0Dh
ANC_TYPE 5
Address: 0Eh
R/W
Default
Used to program the DID for ancillary data
detection at ANC_DETECT output
R/W
0
ANC_TYPE1[7:0]
Used to program the SDID for ancillary data
detection at ANC_DETECT output. Should be
set to zero if no SDID is present in the ancillary
data packet to be detected.
R/W
0
15-8
ANC_TYPE2[15:8]
Used to program the DID for ancillary data
detection at ANC_DETECT output
R/W
0
7-0
ANC_TYPE2[7:0]
Used to program the SDID for ancillary data
detection at ANC_DETECT output. Should be
set to zero if no SDID is present in the ancillary
data packet to be detected.
R/W
0
15-8
ANC_TYPE3[15:8]
Used to program the DID for ancillary data
detection at ANC_DETECT output
R/W
0
7-0
ANC_TYPE3[7:0]
Used to program the SDID for ancillary data
detection at ANC_DETECT output. Should be
set to zero if no SDID is present in the ancillary
data packet to be detected.
R/W
0
15-8
ANC_TYPE4[15:8]
Used to program the DID for ancillary data
detection at ANC_DETECT output
R/W
0
7-0
ANC_TYPE4[7:0]
Used to program the SDID for ancillary data
detection at ANC_DETECT output. Should be
set to zero if no SDID is present in the ancillary
data packet to be detected.
R/W
0
15-8
ANC_TYPE5[15:8]
Used to program the DID for ancillary data
detection at ANC_DETECT output
R/W
0
7-0
ANC_TYPE5[7:0]
Used to program the SDID for ancillary data
detection at ANC_DETECT output. Should be
set to zero if no SDID is present in the ancillary
data packet to be detected.
R/W
0
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GS9090 Data Sheet
3.9.3 EDH Packet Detection
The GS9090 will determine if EDH packets are present in the incoming video data
and assert the EDH_DETECT output status signal appropriately.
EDH_DETECT will be set HIGH when EDH packets have been detected and will
remain HIGH until EDH packets are no longer present. The signal will be set LOW
at the end of the vertical blanking (falling edge of V) if an EDH packet has not been
received and detected during vertical blanking.
EDH_DETECT is available for output on the multi-function output port pins, if so
programmed (see Programmable Multi-Function Outputs on page 56).
Additionally, the EDH_DETECT bit is stored in the DATA_FORMAT register at
address 04h (see Table 3-7).
3.9.4 EDH Flag Detection
As described in EDH Packet Detection on page 33, the GS9090 can detect EDH
packets in the received data stream. The EDH flags for ancillary data, active
picture, and full field areas are extracted from the detected EDH packets and
placed in the EDH_FLAG_IN register of the device (Table 3-5).
When the EDH_FLAG_UPDATE bit in the DATA_FORMAT register (Table 3-7) is
set HIGH by the application layer, the GS9090 will update the ancillary data, full
field, and active picture EDH flags according to SMPTE RP165. The updated EDH
flags are placed in the EDH_FLAG_OUT register (Table 3-6). The EDH packet
output from the device will contain the updated flags.
One set of flags is provided for both fields 1 and 2. Field 1 flag data will be
overwritten by field 2 flag data.
When no EDH packets are detected (EDH_DETECT = LOW), the UES flags in the
EDH_FLAG_OUT register will be set HIGH to signify that the received signal does
not support the error detection practice. These flags are set regardless of the
setting of the EDH_FLAG_UPDATE bit.
NOTE: When EDH_FLAG_UPDATE is LOW with EDH packets in the video
stream, the content of the EDH_FLAG_OUT register is not valid and should be
ignored.
Both EDH_FLAG registers may be read by the host interface at any time during the
received frame except on the lines defined in SMPTE RP165 where these flags are
updated.
The GS9090 will also extract the CRC valid or ‘V’ bit for both active picture and full
field CRCs. The AP_CRC_V bit in the DATA_FORMAT register provides the active
picture CRC valid bit status, and the FF_CRC_V bit provides the full field CRC valid
bit status (see Table 3-7). When EDH_DETECT = LOW, these bits will be cleared.
The flag register values remain set until overwritten by the decoded flags in the
next received EDH packet in the following field. When no EDH packet is detected
during vertical blanking, the flag registers will be cleared at the end of the vertical
blanking period.
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GS9090 Data Sheet
Table 3-5: Host Interface Description for EDH Flag Registers
Register Name
Bit
Name
Description
EDH_FLAG_IN
15
–
14
Address: 02h
R/W
Default
Not Used
–
–
ANC-UES_IN
Ancillary Unknown Error Status Flag
R
0
13
ANC-IDA_IN
Ancillary Internal device error Detected Already Flag.
R
0
12
ANC-IDH_IN
Ancillary Internal device error Detected Here Flag.
R
0
11
ANC-EDA_IN
Ancillary Error Detected Already Flag.
R
0
10
ANC-EDH_IN
Ancillary Error Detected Here Flag.
R
0
9
FF-UES_IN
Full Field Unknown Error Status Flag.
R
0
8
FF-IDA_IN
Full Field Internal device error Detected Already Flag.
R
0
7
FF-IDH_IN
Full Field Internal device error Detected Here Flag.
R
0
6
FF-EDA_IN
Full Field Error Detected Already Flag.
R
0
5
FF-EDH_IN
Full Field Error Detected Here Flag.
R
0
4
AP-UES_IN
Active Picture Unknown Error Status Flag.
R
0
3
AP-IDA_IN
Active Picture Internal device error Detected Already
Flag.
R
0
2
AP-IDH_IN
Active Picture Internal device error Detected Here Flag
R
0
1
AP-EDA_IN
Active Picture Error Detected Already Flag.
R
0
0
AP-EDH_IN
Active Picture Error Detected Here Flag.
R
0
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GS9090 Data Sheet
Table 3-6: Host Interface Description for EDH Flag Registers
Register Name
Bit
Name
Description
EDH_FLAG_OUT
15
–
14
Address: 03h
R/W
Default
Not Used
–
–
ANC-UES
Ancillary Unknown Error Status Flag
R
0
13
ANC-IDA
Ancillary Internal device error Detected Already Flag.
R
0
12
ANC-IDH
Ancillary Internal device error Detected Here Flag.
R
0
11
ANC-EDA
Ancillary Error Detected Already Flag.
R
0
10
ANC-EDH
Ancillary Error Detected Here Flag.
R
0
9
FF-UES
Full Field Unknown Error Status Flag.
R
0
8
FF-IDA
Full Field Internal device error Detected Already Flag.
R
0
7
FF-IDH
Full Field Internal device error Detected Here Flag.
R
0
6
FF-EDA
Full Field Error Detected Already Flag.
R
0
5
FF-EDH
Full Field Error Detected Here Flag.
R
0
4
AP-UES
Active Picture Unknown Error Status Flag.
R
0
3
AP-IDA
Active Picture Internal device error Detected Already
Flag.
R
0
2
AP-IDH
Active Picture Internal device error Detected Here Flag
R
0
1
AP-EDA
Active Picture Error Detected Already Flag.
R
0
0
AP-EDH
Active Picture Error Detected Here Flag.
R
0
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GS9090 Data Sheet
Table 3-7: Host Interface Description for Data Format Register
Register
Name
DATA_FORMAT
Address: 04h
Bit
Name
Description
R/W
Default
15-12
–
Not Used
–
–
11
EDH_FLAG_UPDATE
When set HIGH by the application layer, the device will
update the ancillary data, full field, and active picture
EDH flags according to SMPTE RP165.
R/W
0
10
AP_CRC_V
Active Picture CRC Valid bit.
R
0
9
FF_CRC_V
Full Field CRC Valid bit.
R
0
8
EDH_DETECT
Set HIGH by the device when EDH packets are
detected in the incoming video data.
R
0
7
VERSION_352M
Indicates whether decoded SMPTE 352M packet is
version 0 or version 1. See SMPTE 352M Payload
Identifier on page 36.
R
0
6-5
–
Not Used
–
–
4
STD_LOCK
Standard Lock bit. This bit will be set HIGH when the
flywheel has achieved full synchronization to the
received video standard. See Automatic Video Standard
and Data Format Detection on page 37.
R
0
3-0
DATA_FORMAT[3:0]
Displays the data format being carried on the serial
digital interface. See Video Standard Indication on
page 38.
R
0
3.9.5 SMPTE 352M Payload Identifier
The GS9090 can receive and detect the presence of the SMPTE 352M payload
identifier ancillary data packet. This four word payload identifier packet may be
used to indicate the transport mechanism, frame rate and line scanning / sampling
structure.
Upon reception of this packet, the device will extract the four words describing the
video format being transported and make this information available to the host
interface via the four VIDEO_FORMAT 8 bit registers (Table 3-8). The device will
also indicate the version of the payload packet in bit 7 of the DATA_FORMAT
register (Table 3-7). When this bit is set HIGH the received SMPTE 352M packet
is version 1, otherwise it is version 0.
The VIDEO_FORMAT registers will only be updated if the received checksum is
the same as the locally calculated checksum.
NOTE: The VIDEO_FORMAT registers will not be updated with 352M payload
data if the packets are not on the correct video line (as stated in this standard).
These registers will be cleared to zero, indicating an undefined format, if the device
loses lock to the input data stream (LOCKED = LOW), or if the SMPTE_BYPASS
pin is asserted LOW. This is also the default setting after a device reset.
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GS9090 Data Sheet
Table 3-8: Host Interface Description for SMPTE 352M Payload Identifier Registers
Register Name
Bit
Name
Description
VIDEO_FORMAT_OUT_B
Address: 10h
15-8
SMPTE 352M Byte 4
7-0
VIDEO_FORMAT_OUT_A
Address: 0Fh
R/W
Default
Data will be available in this register when
Video Payload Identification Packets are
detected in the data stream.
R
0
SMPTE 352M Byte 3
Data will be available in this register when
Video Payload Identification Packets are
detected in the data stream.
R
0
15-8
SMPTE 352M Byte 2
Data will be available in this register when
Video Payload Identification Packets are
detected in the data stream.
R
0
7-0
SMPTE 352M Byte 1
Data will be available in this register when
Video Payload Identification Packets are
detected in the data stream.
R
0
3.9.6 Automatic Video Standard and Data Format Detection
The GS9090 can independently detect the input video standard and data format by
using the timing parameters extracted from the received TRS ID words. Total
samples per line, active samples per line, total lines per field/frame, and active lines
per field/frame are all calculated and presented to the host interface via the
RASTER_STRUCTURE registers (Table 3-9).
Also associated with the RASTER_STRUCTURE registers is the status bit,
STD_LOCK. The GS9090 will set STD_LOCK HIGH when the flywheel has
achieved full synchronization to the received video standard. STD_LOCK is stored
in the DATA_FORMAT register (Table 3-7).
The four RASTER_STRUCTURE registers, as well as the STD_LOCK status bit
will default to zero after a device reset. They will also default to zero if the device
loses lock to the input data stream (LOCKED = LOW), or if the SMPTE_BYPASS
pin is asserted LOW.
Table 3-9: Host Interface Description for Raster Structure Registers
Register Name
Bit
Name
Description
R/W
Default
RASTER_STRUCTURE1
Address: 11h
15-11
–
Not Used
–
–
10-0
RASTER_STRUCTURE1[10:0]
Total Lines Per Frame
R
0
RASTER_STRUCTURE2
Address: 12h
15-13
–
Not Used
–
–
12-0
RASTER_STRUCTURE2[12:0]
Total Words Per Line
R
0
RASTER_STRUCTURE3
Address: 13h
15-13
–
Not Used
–
–
12-0
RASTER_STRUCTURE3[12:0]
Words Per Active Line
R
0
RASTER_STRUCTURE4
Address: 14h
15-11
–
Not Used
–
–
10-0
RASTER_STRUCTURE4[10:0]
Active Lines Per Field
R
0
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GS9090 Data Sheet
3.9.6.1 Video Standard Indication
As well as detecting the video standard, the GS9090 can extract the data format
being carried on the serial digital interface (i.e. SDTI, SDI, or DVB-ASI).
This information is represented by bits 0 to 3 of the DATA_FORMAT register
(Table 3-7), which may be read by the application layer via the host interface.
DATA_FORMAT[3:0] register codes are shown in Table 3-10.
The DATA_FORMAT[3:0] register defaults to Fh (undefined) after a system reset.
The register will also be set to its default value if the device is not locked (LOCKED
= LOW), or if both SMPTE_BYPASS and DVB_ASI pins are LOW.
Table 3-10: Data Format Register Codes
Data Format[3:0]
Data Format
Applicable Standards
0h
SDTI DVCPRO - No ECC
SMPTE 321M
1h
SDTI DVCPRO - ECC
SMPTE 321M
2h
SDTI DVCAM
SMPTE 322M
3h
SDTI CP
SMPTE 326M
4h
Other SDTI fixed block size
–
5h
Other SDTI variable block size
–
6h
SDI
–
7h
DVB-ASI
–
8h ~ Eh
Reserved
–
Unknown data format
–
Fh
3.9.7 Error Detection and Indication
The GS9090 contains a number of error detection functions to enhance operation
of the device when operating in SMPTE mode. These functions, except lock error
detection, will not be available in DVB-ASI mode (DVB-ASI Functionality on
page 29) or Data-Through mode (Data-Through functionality on page 29).
The device maintains an error status register at address 01h called
ERROR_STATUS. Each type of error has a specific flag or bit in this register that
is set HIGH whenever that error is detected (Table 3-11).
All bits in the ERROR_STATUS register, except the LOCK_ERR bit, will be cleared
at the start of each video field or when read by the host interface, whichever
condition occurs first.
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GS9090 Data Sheet
All bits, with the exception of the LOCK_ERR, will also be cleared if a change in the
video standard is detected, or under the following conditions:
•
LOCKED is asserted LOW
•
SMPTE_BYPASS is asserted LOW in Manual mode
The whole ERROR_STATUS register, including the LOCK_ERR bit, will be set
LOW during a system reset (RESET = LOW).
In addition to the ERROR_STATUS register, a register called ERROR_MASK is
included to select the specific error conditions that will be detected (Table 3-12).
There is one bit in the ERROR_MASK register for each type of error represented
in the ERROR_STATUS register.
The bits of the ERROR_MASK register will default to '0' after a device reset, thus
allowing all error types to be detected. The host interface may disable individual
error detection by setting the corresponding bit HIGH in this register.
Error conditions are also indicated to the application layer via the status signal pin
DATA_ERROR. This output pin is an inverted logical 'OR'ing of each error status
flag stored in the ERROR_STATUS register. DATA_ERROR is normally HIGH, but
will be set LOW by the device when an error condition that has not been masked
is detected.
Table 3-11: Host Interface Description for Error Status Register
Register Name
Bit
Name
Description
ERROR_STATUS
15-7
–
6
Address: 01h
R/W
Default
Not Used
–
–
VD_STD_ERR
Video Standard Error Flag. Set HIGH when a
mismatch between the received SMPTE 352M
packets (version 1 or version 0) and the
calculated video standard occurs.
R
0
5
FF_CRC_ERR
Full Field CRC Error Flag. Set HIGH when a Full
Field (FF) CRC mismatch has been detected in
Field 1 or 2
R
0
4
AP_CRC_ERR
Active Picture CRC Error Flag. Set HIGH when an
Active Picture (AP) CRC mismatch has been
detected in Field 1 or 2.
R
0
3
LOCK_ERR
Lock Error Flag. Set HIGH whenever the
LOCKED pin is LOW (indicating the device is not
correctly locked).
R
0
2
CS_ERR
Checksum Error Flag. Set HIGH when ancillary
data packet checksum error has been detected.
R
0
1
SAV_ERR
Start of Active Video Error Flag. Set HIGH when
TRS errors are detected in either 8-bit or 10-bit
TRS words.
R
0
0
EAV_ERR
End of Active Video Error Flag. Set HIGH when
TRS errors are detected in either 8-bit or 10-bit
TRS words.
R
0
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GS9090 Data Sheet
Table 3-12: Host Interface Description for Error Mask Register
Register Name
Bit
Name
Description
ERROR_MASK
15-7
–
Not Used
6
VD_STD_ERR_MASK
Address: 25h
R/W
Default
–
–
Video Standard Error Flag Mask bit.
R/W
0
FF_CRC_ERR_MASK
Full Field CRC Error Flag Mask bit.
R/W
0
4
AP_CRC_ERR_MASK
Active Picture CRC Error Flag Mask bit
R/W
0
3
LOCK_ERR_MASK
Lock Error Flag Mask bit.
R/W
0
2
CS_ERR_MASK
Checksum Error Flag Mask bit.
R/W
0
1
SAV_ERR_MASK
Start of Active Video Error Flag Mask bit.
R/W
0
0
EAV_ERR_MASK
End of Active Video Error Flag Mask bit.
R/W
0
5
3.9.7.1 Video Standard Error Detection
If a mismatch between the received SMPTE 352M packets and the calculated
video standard occurs, the GS9090 will indicate a video standard error by setting
the VD_STD_ERR bit of the ERROR_STATUS register HIGH. The device will
detect errors in both version 1 and version 0 352M packets.
3.9.7.2 EDH CRC Error Detection
The GS9090 calculates the Full Field (FF) and Active Picture (AP) CRC words
according to SMPTE RP165 in support of Error Detection and Handling packets in
SD signals.
These calculated CRC values are compared with the received CRC values. If a
mismatch is detected, the error is flagged in the AP_CRC_ERR and/or
FF_CRC_ERR bits of the ERROR_STATUS register. These two flags are shared
between fields 1 and 2.
The AP_CRC_ERR bit will be set HIGH when an active picture CRC mismatch has
been detected in field 1 or 2. The FF_CRC_ERR bit will be set HIGH when a full
field CRC mismatch has been detected in field 1 or 2.
EDH CRC errors will only be indicated when the device has correctly received EDH
packets.
SMPTE RP165 specifies the calculation ranges and scope of EDH data for
standard 525 and 625 component digital interfaces. The GS9090 will utilize these
standard ranges by default.
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GS9090 Data Sheet
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 timing information.
The registers available to the host interface for programming EDH calculation
ranges include active picture and full field line/pixel start and end positions for both
fields. Table 3-13 shows the relevant registers, which default to '0' after a 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 timing. 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.
Table 3-13: Host Interface Description for EDH Calculation Range Registers
Register Name
Bit
Name
Description
AP_LINE_START_F0
Address: 15h
15-11
–
Not Used
10-0
AP_LINE_START_F0[10:0]
Field 0 Active Picture start line data used
to set EDH calculation range outside of
SMPTE RP 165 values.
AP_LINE_END_F0
Address: 16h
15-11
–
Not Used
10-0
AP_LINE_END_F0[10:0]
Field 0 Active Picture end line data used
to set EDH calculation range outside of
SMPTE RP 165 values.
AP_LINE_START_F1
Address: 17h
15-11
–
Not Used
10-0
AP_LINE_START_F1[10:0]
Field 1 Active Picture start line data used
to set EDH calculation range outside of
SMPTE RP 165 values.
AP_LINE_END_F1
Address: 18h
15-11
–
Not Used
10-0
AP_LINE_END_F1[10:0]
Field 1 Active Picture end line data used
to set EDH calculation range outside of
SMPTE RP 165 values.
FF_LINE_START_F0
Address: 19h
15-11
–
Not Used
10-0
FF_LINE_START_F0[10:0]
Field 0 Full Field start line data used to
set EDH calculation range outside of
SMPTE RP 165 values.
FF_LINE_END_F0
Address: 1Ah
15-11
–
Not Used
10-0
FF_LINE_END_F0[10:0]
Field 0 Full Field end line data used to
set EDH calculation range outside of
SMPTE RP 165 values.
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R/W
Default
–
–
R/W
0
–
–
R/W
0
–
–
R/W
0
–
–
R/W
0
–
–
R/W
0
–
–
R/W
0
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GS9090 Data Sheet
Table 3-13: Host Interface Description for EDH Calculation Range Registers (Continued)
Register Name
Bit
Name
Description
FF_LINE_START_F1
Address: 1Bh
15-11
–
Not Used
10-0
FF_LINE_START_F1[10:0]
Field 1 Full Field start line data used to
set EDH calculation range outside of
SMPTE RP 165 values.
FF_LINE_END_F1
Address: 1Ch
15-11
–
Not Used
10-0
FF_LINE_END_F1[10:0]
Field 1 Full Field end line data used to
set EDH calculation range outside of
SMPTE RP 165 values.
AP_PIXEL_START_F0
Address: 1Dh
15-13
–
Not Used
12-0
AP_PIXEL_START_F0[12:0]
Field 0 Active Picture start pixel data
used to set EDH calculation range
outside of SMPTE RP 165 values.
AP_PIXEL_END_F0
Address: 1Eh
15-13
–
Not Used
12-0
AP_PIXEL_END_F0[12:0]
Field 0 Active Picture end pixel data
used to set EDH calculation range
outside of SMPTE RP 165 values.
AP_PIXEL_START_F1
Address: 1Fh
15-13
–
Not Used
12-0
AP_PIXEL_START_F1[12:0]
Field 1 Active Picture start pixel data
used to set EDH calculation range
outside of SMPTE RP 165 values.
AP_PIXEL_END_F1
Address: 20h
15-13
–
Not Used
12-0
AP_PIXEL_END_F1[12:0]
Field 1 Active Picture end pixel data
used to set EDH calculation range
outside of SMPTE RP 165 values.
FF_PIXEL_START_F0
Address: 21h
15-13
–
Not Used
12-0
FF_PIXEL_START_F0[12:0]
Field 0 Full Field start pixel data used to
set EDH calculation range outside of
SMPTE RP 165 values.
FF_PIXEL_END_F0
Address: 22h
15-13
–
Not Used
12-0
FF_PIXEL_END_F0[12:0]
Field 0 Full Field end pixel data used to
set EDH calculation range outside of
SMPTE RP 165 values.
FF_PIXEL_START_F1
Address: 23h
15-13
–
Not Used
12-0
FF_PIXEL_START_F1[12:0]
Field 1 Full Field start pixel data used to
set EDH calculation range outside of
SMPTE RP 165 values.
FF_PIXEL_END_F1
Address: 24h
15-13
–
Not Used
12-0
FF_PIXEL_END_F1[12:0]
Field 1 Full Field end pixel data used to
set EDH calculation range outside of
SMPTE RP 165 values.
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R/W
Default
–
–
R/W
0
–
–
R/W
0
–
–
R/W
0
–
–
R/W
0
–
–
R/W
0
–
–
R/W
0
–
–
R/W
0
–
–
R/W
0
–
–
R/W
0
–
–
R/W
0
42 of 70
GS9090 Data Sheet
3.9.7.3 Lock Error Detection
The LOCKED pin of the GS9090 indicates the lock status of the internal reclocker
and lock detect blocks of the device. Only when the LOCKED pin is asserted HIGH
has the device correctly locked to the received data stream (see Lock Detect on
page 22).
The GS9090 will also indicate lock error to the host interface when LOCKED =
LOW by setting the LOCK_ERR bit in the ERROR_STATUS register HIGH.
3.9.7.4 Ancillary Data Checksum Error Detection
The GS9090 will calculate checksums for all received ancillary data and compare
the calculated values to the received checksum words. If a mismatch is detected,
the CS_ERR bit of the ERROR_STATUS register will be set HIGH.
Although the GS9090 will calculate and compare checksum values for all ancillary
data types by default, the host interface may program the device to check only
certain types of ancillary data checksums. This is accomplished via the
ANC_TYPE registers as described in Programmable Ancillary Data Detection on
page 31.
3.9.7.5 TRS Error Detection
TRS error flags are generated by the GS9090 when:
1. The received TRS H timing does not correspond to the internal flywheel
timing; or
2. The received TRS hamming codes are incorrect.
Both 8-bit and 10-bit SAV and EAV TRS words are checked for timing and data
integrity errors. These are flagged via the SAV_ERR and/or EAV_ERR bits of the
ERROR_STATUS register.
NOTE: H timing based TRS errors will only be generated if the FW_EN pin is set
HIGH. F & V timing errors are not detected or corrected.
3.9.8 Error Correction and Insertion
In addition to signal error detection and indication, the GS9090 may also correct
certain types of errors by inserting corrected code words, checksums, and TRS
values into the data stream. These features are only available in SMPTE mode and
the IOPROC_EN pin must be set HIGH by the application layer. Individual
correction features may be enabled or disabled by setting bits 0 to 3 in the
IOPROC_DISABLE register (Table 3-14).
All of the IOPROC_DISABLE register bits default to '0' after a 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 the
IOPROC_DISABLE register.
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GS9090 Data Sheet
Table 3-14: Host Interface Description for Internal Processing Disable Register
Register Name
Bit
Name
Description
IOPROC_DISABLE
15-10
–
Not Used
9
ANC_PKT_EXT
Ancillary Packet Extraction. When the FIFO is
configured for Ancillary Data Extraction mode, the
application layer must set this bit HIGH to begin
extraction.
Address: 00h
R/W
Default
–
–
R/W
0
NOTE: Setting ANC_PKT_EXT LOW will not
automatically disable ancillary data extraction (see
Ancillary Data Extraction and Reading on page 51).
8-7
FIFO_MODE[1:0]
FIFO Mode: These bits control which mode the internal
FIFO is operating in (see Table 3-15)
R/W
0
6
H_CONFIG
Horizontal sync timing output configuration. Set LOW
for active line blanking timing. Set HIGH for H blanking
based on the H bit setting of the TRS word. See
Figure 3-3 in HVF Timing Signal Generation on
page 28.
R/W
0
5-4
Not Used.
3
ILLEGAL_REMAP
Illegal Code re-mapping. Correction of illegal code
words within the active picture. Set HIGH to disable.
The IOPROC_EN pin must be set HIGH.
R/W
0
2
EDH_CRC_INS
Error Detection & Handling (EDH) Cyclical Redundancy
Check (CRC) error correction insertion. Set HIGH to
disable. The IOPROC_EN pin must be set HIGH.
R/W
0
1
ANC_CSUM_INS
Ancillary Data Checksum insertion. Set HIGH to
disable. The IOPROC_EN pin must be set HIGH.
R/W
0
0
TRS_INS
Timing Reference Signal Insertion. The device will
correct TRS based errors when set LOW (see TRS
Error Correction on page 45). The IOPROC_EN pin
must also be HIGH.
R/W
0
Set this bit HIGH to disable.
3.9.8.1 Illegal Code Remapping
If the ILLEGAL_REMAP bit of the IOPROC_DISABLE register is set LOW, the
GS9090 will remap all codes within the active picture between the values 3FCh and
3FFh to 3FBh. All codes within the active picture area between the values 00h and
03h will be re-mapped to 04h.
In addition, 8-bit TRS and ancillary data preambles will be remapped to 10-bit
values if this feature is enabled.
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GS9090 Data Sheet
3.9.8.2 EDH CRC Error Correction
If the EDH_CRC_INS bit of the IOPROC_DISABLE register is set LOW, the
GS9090 will generate and insert active picture and full field CRC words into the
EDH data packets received by the device.
Additionally, when EDH_CRC_INS is LOW, the device will set the active picture
and full field CRC ‘V’ bits HIGH in the EDH packet (see EDH Flag Detection on
page 33). The AP_CRC_V and FF_CRC_V register bits will only report the
received EDH validity flags.
EDH CRC calculation ranges are described in EDH CRC Error Detection on
page 40.
NOTE: Although the GS9090 will modify and insert EDH CRC words and EDH
packet checksums, the device will only update EDH error flags when the
EDH_FLAG_UPDATE bit is set HIGH (see EDH Flag Detection on page 33).
3.9.8.3 Ancillary Data Checksum Error Correction
When ancillary data checksum error correction and insertion is enabled, the
GS9090 will generate and insert ancillary data checksums for all ancillary data
words by default. Where user specified ancillary data has been programmed into
the ANC_TYPE registers of the host interface (see Programmable Ancillary Data
Detection on page 31), only the checksums for the ancillary data programmed will
be corrected.
This feature is enabled when the ANC_CSUM_INS bit of the IOPROC_DISABLE
register is set LOW.
3.9.8.4 TRS Error Correction
When TRS error correction and insertion is enabled, the GS9090 will generate and
insert 10-bit TRS code words as required.
TRS word generation will be performed in accordance with the timing parameters
generated by the flywheel to provide an element of noise immunity. As a result,
TRS correction will only take place if the flywheel in enabled (FW_EN = HIGH).
In addition, the TRS_INS bit of the IOPROC_DISABLE register must be set LOW.
NOTE: Only H timing based errors will be corrected (see TRS Error Detection on
page 43).
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GS9090 Data Sheet
3.10 Internal FIFO Operation
The GS9090 contains an internal video line-based FIFO, which can be
programmed by the application layer to work in any of the following modes:
1. Video Mode,
2. DVB-ASI Mode,
3. Ancillary Data Extraction Mode, or
4. Bypass Mode
The FIFO can be configured to one of the four modes by using the host interface
to set the FIFO_MODE[1:0] bits of the IOPROC_DISABLE register (see Table 3-14
in Error Correction and Insertion on page 43). The setting of these bits is shown in
Table 3-15. To enable the FIFO, the application layer must also set the FIFO_EN
pin HIGH. Additionally, if the FIFO is configured for video mode or ancillary data
extraction mode, the IOPROC_EN pin must be set HIGH.
The FIFO is fully asynchronous, allowing simultaneous read and write access. It
has a depth of 2048 words, which will accommodate 1 full line of SD video for both
525 and 625 standards. The FIFO is 15 bits wide: 10 bits for video data and 5 bits
for other signals, such as H, V, F, EDH_DETECT, and ANC_DETECT.
Table 3-15: FIFO Configuration Bit Settings
FIFO_MODE[1:0]
Register Setting
FIFO_EN
Pin Setting
IOPROC_EN
Pin Setting
Video Mode
00b
HIGH
HIGH
DVB-ASI Mode
01b
HIGH
X
Ancillary Data Extraction Mode
10b
HIGH
HIGH
Bypass Mode
11b
X
X
FIFO Mode
NOTE: ‘X’ signifies ‘don’t care’. The pin is ignored and may be set HIGH or LOW.
3.10.1 Video Mode
The internal FIFO is in video mode when the application layer sets the FIFO_EN
and IOPROC_EN pins HIGH, and the FIFO_MODE[1:0] bits in the
IOPROC_DISABLE register are configured to 00b. By default, the
FIFO_MODE[1:0] bits are set to 00b by the device whenever the SMPTE_BYPASS
pin is set HIGH and the DVB_ASI pin is set LOW (i.e. the device is in SMPTE
mode); however, the application layer may program the FIFO_MODE[1:0] bits as
required.
Figure 3-6 shows the input and output signals of the FIFO when it is configured for
video mode.
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GS9090 Data Sheet
Internal
Application Interface
10-bit Video Data
10-bit Video Data
H
H
V
V
FIFO
(Video Mode)
F
ANC
F
ANC
EDH_DETECT
EDH_DETECT
RD_RESET
WR_RESET
WR_CLK (PCLK)
RD_CLK
Figure 3-6: FIFO in Video Mode
When operating in video mode, the GS9090 will write data sequentially into the
FIFO, starting with the first active pixel in location zero of the memory. In this mode,
it is possible to use the FIFO for clock phase interchange and data alignment /
delay. The extracted H, V, and F information will also be written into the FIFO. The
H, V, and F outputs will be timed to the video data read from the FIFO by the
application interface (see HVF Timing Signal Generation on page 28).
The device will ensure write-side synchronization is maintained, according to the
extracted PCLK and flywheel timing information.
Full read-control of the FIFO is made available to the application interface such that
data will be clocked out of the FIFO on the rising edge of the externally provided
RD_CLK signal. When there is a HIGH-to-LOW transition at the RD_RESET pin
the first pixel presented to the video data bus will be the first 000 of the SAV (see
Figure 3-7). The FIFO_LD pulse may be used to control the RD_RESET pin.
NOTE: The RD_RESET pulse should not be held LOW for more than one RD_CLK
cycle.
RD_CLK
Y'CbCr DATA
3FF
000
000
XYZ
RD_RESET
Figure 3-7: RD_RESET Pulse Timing
In video mode, the ANC_DETECT output signal will be timed to the data output
from the FIFO (see Ancillary Data Detection and Indication on page 31 for more
detail).
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GS9090 Data Sheet
3.10.2 DVB-ASI Mode
The internal FIFO is in DVB-ASI mode when the application layer sets the
FIFO_EN pin HIGH, and the FIFO_MODE[1:0] bits in the IOPROC_DISABLE
register are configured to 01b. By default, the FIFO_MODE[1:0] bits are set to 01b
by the device whenever the DVB_ASI pin is set HIGH (i.e. the device is in DVB-ASI
mode); however, the application layer may program the FIFO_MODE[1:0] bits as
required.
Figure 3-8 shows the input and output signals of the FIFO when it is configured for
DVB-ASI Mode.
Application Interface
Internal
8-bit MPEG Data
8-bit MPEG Data
WORDERR
SYNCOUT
WORDERR
FIFO
(DVB-ASI Mode)
SYNCOUT
FIFO_EMPTY
FIFO_FULL
WR_CLK
(PCLK gated with SYNCOUT)
RD_CLK
Figure 3-8: FIFO in DVB-ASI Mode
When operating in DVB-ASI mode, the GS9090's FIFO can be used for clock rate
interchange operation. The extracted 8-bit MPEG packets will be written into the
FIFO at 27MHz based on the SYNCOUT signal from the internal DVB-ASI decoder
block. The SYNCOUT and WORDERR bits are also stored in the FIFO (see Status
Signal Outputs on page 29).
When SYNCOUT goes HIGH, K28.5 stuffing characters have been detected and
no data will be written into the FIFO.
Data is read out of the FIFO by the application layer using the RD_CLK pin. In
DVB-ASI mode, the RD_RESET pin is not used.
3.10.2.1 Reading From the FIFO
The FIFO contains internal read and write pointers used to designate which spot in
the FIFO the MPEG packet will be read from or written to. These internal pointers
control the status flags FIFO_EMPTY and FIFO_FULL, which are available for
output on the multi-function output port pins, if so programmed (see Programmable
Multi-Function Outputs on page 56).
In the case where the write pointer is originally ahead of the read pointer, the
FIFO_EMPTY flag will be set HIGH when both pointers arrive at the same address
(see block A in Figure 3-11). The application layer can use this flag to determine
when to stop reading from the device.
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GS9090 Data Sheet
A write and read pointer offset may be programmed in the
FIFO_EMPTY_OFFSET[9:0] register of the host interface. If an offset value is
programmed in this register, the FIFO_EMPTY flag will be set HIGH when the read
and write pointers of the FIFO are at the same address, and will remain HIGH until
the write pointer reaches the programmed offset. Once the pointer offset has been
exceeded, the FIFO_EMPTY flag will go LOW (see block B in Figure 3-11).
In the case where the read pointer is originally ahead of the write pointer, the
FIFO_FULL flag will be set HIGH when both pointers arrive at the same address
(see block C in Figure 3-11). The application layer can use this flag to determine
when to begin reading from the device.
A read and write pointer offset may also be programmed in the
FIFO_FULL_OFFSET[9:0] register of the host interface. If an offset value is
programmed in this register, the FIFO_FULL flag will be set HIGH when the read
and write pointers of the FIFO are at the same address, and will remain set HIGH
until the read pointer reaches the programmed offset. Once the pointer offset has
been exceeded, the FIFO_FULL flag will be cleared (see block D in Figure 3-11).
Gating the RD_CLK Using the FIFO_EMPTY Flag
Using the asynchronous FIFO_EMPTY flag to gate RD_CLK requires external
clock gating circuity to generate a clean burst clock (see Figure 3-9). An example
circuit for this application is shown in Figure 3-10.
Figure 3-9: Burst Clock
FIFO_EMPTY
RD_CLK
D
SET
CLR
Q
Q
D
SET
CLR
Q
Q
D
SET
CLR
Q
Q
GATED
RD_CLK
RD_CLK
FIFO_EMPTY
GATED
RD_CLK
Figure 3-10: Example Circuit to Gate RD_CLK Using the FIFO_EMPTY Flag
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GS9090 Data Sheet
B
A
Read
Pointer
Read
Pointer
Exmple 1: FIFO Empty Flag Operation when
FIFO_EMPTY[9:0] = 0h
Address
Address
0
Exmple 2: FIFO Empty Flag Operation when
FIFO_EMPTY[9:0] = 3FFh
2047
1023
2047
0
FIFO
FIFO
Write
Pointer
Write
Pointer
FIFO_EMPTY
FIFO_EMPTY
C
D
Read
Pointer
Exmple 4: FIFO Full Flag Operation when FIFO_FULL[9:0] = 3FFh
Read
Pointer
Exmple 3: FIFO Full Flag Operation when
FIFO_FULL[9:0] = 0h
Address
Address
5
0
1023
2047
2047
FIFO
FIFO
Write
Pointer
Write
Pointer
FIFO_FULL
FIFO_FULL
Figure 3-11: Reading From the FIFO in DVB-ASI Mode
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GS9090 Data Sheet
3.10.3 Ancillary Data Extraction Mode
The internal FIFO is ancillary data extraction mode when the application layer sets
the FIFO_EN and IOPROC_EN pins HIGH, and the FIFO_MODE[1:0] bits in the
IOPROC_DISABLE register are configured to 10b.
Once the FIFO enters ancillary data extraction mode, it takes 2200 PCLKs (82us)
to initialize the FIFO before ancillary data extraction can begin.
In this mode, the FIFO is divided into two separate blocks of 1024 words each. This
allows ancillary data to be written to one side of the FIFO while the application layer
reads from the other. Thus, in each half of the FIFO, the GS9090 will write the
contents of the packets up to a maximum of 1024 8-bit words.
As described in Programmable Ancillary Data Detection on page 31, up to five
specific types of ancillary data to be extracted can be programmed in the
ANC_TYPE registers. If the ANC_TYPE registers are all set to zero, the device will
extract all types of ancillary data.
The entire packet, including the ancillary data flag (ADF), data identification (DID),
secondary data identification (SDID), data count (DC), and checksum word will be
written into the memory. The device will detect ancillary data packet DID's placed
anywhere in the video data stream, including the active picture area.
Additionally, the lines from which the packets are to be extracted from can be
programmed into the ANC_LINE_A[10:0] and ANC_LINE_B[10:0] registers,
allowing ancillary data from a maximum of two lines per frame to be extracted. If
only one line number register is programmed (with the other set to zero), ancillary
data packets will be extracted from one line per frame only. When both registers
are set to zero, the device will extract packets from all lines.
The application layer reads the extracted ancillary data through the host interface
starting at address 02Ch up to 42Bh inclusive (1024 words). This must be done
while there is a valid video signal present at the serial input and the device is locked
(LOCKED = HIGH).
3.10.3.1 Ancillary Data Extraction and Reading
To start ancillary data extraction, the ANC_PKT_EXT bit of the IOPROC_DISABLE
register must be set HIGH (see Table 3-14 in Error Correction and Insertion on
page 43). Packet extraction will begin in the following frame after this bit has been
set HIGH.
NOTE: Ancillary data extraction will not begin until 2200 PCLKs (82us) after the
device has entered into ancillary data extraction mode (FIFO_MODE[1:0] = 10b),
regardless of the setting of the ANC_PKT_EXT bit.
When the FIFO is configured for ancillary data extraction mode, setting the
IOPROC_EN pin LOW will disable packet extraction. If IOPROC_EN is LOW, the
setting of the ANC_PKT_EXT host interface bit will be ignored.
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GS9090 Data Sheet
Clearing the ANC_PKT_EXT bit will not automatically disable ancillary data
extraction. To disable ancillary data extraction, switch the FIFO into bypass mode
by setting FIFO_MODE[1:0] = 11b. 2200 PCLK cycles after the device re-enters
ancillary data extraction mode, data extraction will commence immediately if
ANC_PKT_EXT is still HIGH.
The application layer can use the ANC_DETECT output flag available on the I/O
output pin (see Programmable Multi-Function Outputs on page 56) to determine
the length of the ancillary data extracted and when to begin reading the extracted
data from memory. Recall that ANC_DETECT is HIGH whenever ancillary data
has been detected.
In addition, the data count (DC) word, which is located three words after the
ancillary data flag (ADF) in the memory, can be read to determine how many valid
user data words (UDW) are present in the extracted packet (see SMPTE 291M for
more details). The DC value can then be used to preset how many address reads
must be performed to obtain only the user data words.
Ancillary data will be written into the first half of the FIFO until it is full or until the
ANC_DATA_SWITCH bit is toggled (i.e. a HIGH-to-LOW or LOW-to-HIGH
transition). If the ANC_DATA_SWITCH bit is not toggled, extracted data will not be
written into memory after the first half of the FIFO is full (see block A in
Figure 3-12).
When the ANC_DATA_SWITCH bit is toggled, new extracted data will be written
to the second half starting at address zero (see block B in Figure 3-12). The data
in the first half of the FIFO may still be read.
Once the data in the first half of the FIFO has been read, the ANC_DATA_SWITCH
may be toggled again to enable the second half of the FIFO to be read. The first
half of the FIFO will be cleared, and the device will continue to write ancillary data
to the second half of the FIFO (see block C in Figure 3-12).
If the ANC_DATA_SWITCH bit is toggled again, new extracted data will be written
to the first half starting at address zero (see block D in Figure 3-12). The data in the
second half of the FIFO may still be read.
Toggling ANC_DATA_SWITCH again will clear the second half of the FIFO and
restore the read and write pointers to the situation shown in block A. The switching
process (shown in blocks A to D in Figure 3-12) will continue with each toggle of
the ANC_DATA_SWITCH bit.
NOTE: At least 1100 PCLK cycles (41us) must pass between toggles of the
ANC_DATA_SWITCH bit. The ANC_DATA_SWITCH bit must be toggled at a point
in the video where no extraction is occurring (i.e. the ANC_DETECT signal is
LOW).
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GS9090 Data Sheet
A
0
Application layer
read pointer
B
0
ANC_DATA
ANC_DATA
0
Internal write
pointer
ANC_DATA
Application layer
read pointer
ANC_DATA
ANC_DATA
Internal write
pointer
0
ANC_DATA
ANC_DATA
ANC_DATA
ANC_DATA
ANC_DATA
ANC_DATA
ANC_DATA
1023
1023
1023
1023
ANC_DATA_SWITCH = HIGH
ANC_DATA_SWITCH = LOW
ANC_DATA_SWITCH bit is toggled HIGH. New ancillary data is written
to second half of FIFO starting at adress zero. Application layer continues to
read from the first half of the FIFO.
D
C
0
Application layer
read pointer
0
Internal write
pointer
ANC_DATA
0
0
%%
ANC_DATA
ANC_DATA
ANC_DATA
ANC_DATA
Application layer
read pointer
ANC_DATA
Internal write
pointer
ANC_DATA
ANC_DATA
ANC_DATA
ANC_DATA
ANC_DATA
ANC_DATA
ANC_DATA
ANC_DATA
ANC_DATA
ANC_DATA
%%
1023
1023
1023
ANC_DATA_SWITCH = LOW
1023
ANC_DATA_SWITCH = HIGH
ANC_DATA_SWITCH toggled LOW. First half of FIFO cleared and ancillary
data read from second half of FIFO. Device continues to write ancillary data
to second half of FIFO.
ANC_DATA_SWITCH bit is toggled HIGH. New ancillary data is written to first half of
FIFO starting at address zero. Application layer continues to read from second half
of FIFO. Toggling ANC_DATA_SWITCH back LOW will clear the second half of the
FIFO and go back the situation depicted in box A.
NOTE: At least 1100 PCLK cycles must pass between toggles of the ANC_DATA_SWITCH bit.
The bit must be toggled at a point where no extraction is occuring (i.e. the ANC signal is LOW).
Figure 3-12: Ancillary Data Extraction and Reading
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GS9090 Data Sheet
3.10.3.2 Clearing the ANC Data FIFO
When switching to ANC FIFO mode from any other mode and on power up, the
user must follow one of the 2 methods below to ensure that the FIFO is fully
cleared.
Clearing ANC FIFO Method 1:
1. Enable ANC FIFO mode (write 10b into the FIFO_MODE register).
2. Wait for ANC_FIFO_READY bit to be asserted.
3. Toggle (LOW-to-HIGH-to-LOW) ANC_DATA_SWITCH bit (bit 12 of
IO_CONFIG register) twice.
Clearing ANC FIFO Method 2:
1. Power on device.
2. Set FIFO_EN pin HIGH.
3. Enable ANC FIFO mode (write 10b into the FIFO_MODE register).
4. Set FIFO_EN pin LOW.
5. Set FIFO_EN pin HIGH.
3.10.4 Bypass Mode
The internal FIFO is in bypass mode when the application layer sets the FIFO_EN
or IOPROC_EN pin LOW, or the FIFO_MODE[1:0] bits in the IOPROC_DISABLE
register are configured to 11b. By default, the FIFO_MODE[1:0] bits are set to 11b
by the device whenever both the SMPTE_BYPASS and DVB_ASI pins are LOW;
however, the application layer may program the FIFO_MODE[1:0] bits as required.
In bypass mode, the FIFO is not inserted into the video path and data is presented
to the output of the device synchronously with the PCLK output. The FIFO will be
disabled and placed in static mode to save power.
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GS9090 Data Sheet
3.11 Parallel Data Outputs
Data outputs are valid on the rising edge of PCLK as shown in Figure 3-13.
tOH
tOD
50%
PCLK
VOH
VOH
VOL
VOL
VOH
VOH
VOL
VOL
DOUT[9:0]
CONTROL
SIGNAL OUTPUT
Figure 3-13: PCLK to Data & Control Signal Output Timing
The data is presented in 10-bit format and may be scrambled or unscrambled,
framed or unframed.
The output data format is defined by the settings of the external SMPTE_BYPASS
and DVB_ASI pins (see Table 3-16). Recall that in Manual mode, these pins are
set by the application layer as inputs to the device. In Auto mode, however, the
GS9090 sets these pins as output status signals.
Table 3-16: Parallel Data Output Format
Pin Settings
Output Data Format
DOUT[9:0]
SMPTE_BYPASS
DVB_ASI
10-bit Data
DATA
LOW
LOW
10-bit Multiplexed SD
Luma / Chroma
HIGH
LOW
10-bit DVB-ASI
DVB-ASI data
LOW
HIGH
3.11.1 Parallel Data Bus
The parallel data outputs of the GS9090 support both LVTTL and LVCMOS levels.
These outputs use either +1.8V or +3.3V, supplied at the IO_VDD and IO_GND
pins. When interfacing with +5V logic levels, the IO_VDD pins should be supplied
with +3.3V. For a low power connection, the IO_VDD pins may be connected to
+1.8V.
All outputs, including the PCLK output, will be driven to a high-impedance state if
the RESET signal is asserted LOW with the exception of the STAT pins and the
DATA_ERROR pin which will maintain the last state they were in for the duration
that RESET is asserted.
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GS9090 Data Sheet
3.11.2 Parallel Output in SMPTE Mode
When the device is operating in SMPTE mode (see SMPTE Functionality on
page 25), SD data is presented to the output bus in multiplexed format. The data
will be output on the DOUT[9:0] pins and word aligned according to TRS ID words.
3.11.3 Parallel Output in DVB-ASI Mode
When operating in DVB-ASI mode (see DVB-ASI Functionality on page 29), the
extracted 8-bit data words will be presented on DOUT[7:0] such that DOUT7 =
HOUT is the most significant bit of the decoded transport stream data and DOUT0
= AOUT is the least significant bit.
In addition, DOUT9 and DOUT8 will be configured as the DVB-ASI status signals
WORDERR and SYNCOUT respectively. See Status Signal Outputs on page 29
for a description of these DVB-ASI specific output signals.
3.11.4 Parallel Output in Data-Through Mode
When operating in Data-Through mode (see Data-Through functionality on
page 29), the GS9090 presents data to the output data bus without performing any
decoding, descrambling, or word-alignment.
As described in Data-Through functionality on page 29, the data bus outputs will
be forced to logic LOW if the device is set to operate in Auto mode but cannot
identify SMPTE TRS ID or DVB-ASI sync words in the input data stream.
3.12 Programmable Multi-Function Outputs
The GS9090 has a multi-function output port that uses 4 pins, STAT0 through
STAT3. Each pin can be programmed via the host interface to output one of the
following signals: H, V, F, FIFO_LD, ANC_DETECT, EDH_DETECT, FIFO_FULL,
and FIFO_EMPTY.
Table 3-17: Output Signals Available on Multi-Function Output Ports
Output Status Signal
Reference
H
HVF Timing Signal Generation on page 28
V
HVF Timing Signal Generation on page 28
F
HVF Timing Signal Generation on page 28
FIFO_LD
FIFO Load Pulse on page 30
ANC_DETECT
Ancillary Data Detection and Indication on
page 31
EDH_DETECT
EDH Packet Detection on page 33
FIFO_FULL
Reading From the FIFO on page 48
FIFO_EMPTY
Reading From the FIFO on page 48
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GS9090 Data Sheet
The registers that determine the signals present on the STAT [3:0] pins are labelled
STAT0_CONFIG[2:0], STAT1_CONFIG[2:0], STAT2_CONFIG[2:0], and
STAT3_CONFIG[2:0] respectively. Table 3-18 shows the setting of the
IO_CONFIG registers for each of the available output signals.
Table 3-18: IO_CONFIG Settings
Function
I/O
IO_CONFIG Setting
H
Output
000b
V
Output
001b
F
Output
010b
FIFO_LD
Output
011b
ANC_DETECT
Output
100b
EDH_DETECT
Output
101b
FIFO_FULL
Output
110b
FIFO_EMPTY
Output
111b
The default setting for each IO_CONFIG register depends on the configuration of
the device and the internal FIFO mode selected. This is shown in Table 3-19.
NOTE: Signals not relevant to the particular mode of operation will be ignored and
be high-impedance when programmed to be displayed on the STAT[3:0] pins. For
example, the FIFO_FULL and FIFO_EMPTY flags can only be displayed on the
STAT[3:0] pins when the device is in DVB-ASI mode. If the FIFO_FULL or
FIFO_EMPTY value (110 and 111 respectively) is programmed into the
IO_CONFIG registers when the device is in SMPTE mode, the value will be
ignored and the I/O pin will be set to a high impedance state.
Table 3-19: STAT [3:0] Output Default Configuration
Device Configuration
IO_CONFIG
Register
I/O
Function
Default IO_CONFIG
Setting
SMPTE Functionality
SMPTE_BYPASS = HIGH
DVB_ASI = LOW
FIFO: Video Mode or Ancillary Data
Extraction Mode
STAT0_CONFIG
Output
H
000b
STAT1_CONFIG
Output
V
001b
STAT2_CONFIG
Output
F
010b
STAT3_CONFIG
Output
FIFO_LD
011b
STAT0_CONFIG
Output
FIFO_FULL
110b
STAT1_CONFIG
Output
FIFO_EMPTY
111b
STAT2_CONFIG
Output
High Z
000b
STAT3_CONFIG
Output
High Z
000b
DVB-ASI
DVB_ASI = HIGH
FIFO: DVB-ASI Mode
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GS9090 Data Sheet
Table 3-19: STAT [3:0] Output Default Configuration (Continued)
Device Configuration
IO_CONFIG
Register
I/O
Function
Default IO_CONFIG
Setting
Data-Through
SMPTE_BYPASS = LOW
DVB_ASI = LOW
STAT0_CONFIG
Output
High Z
000b
STAT1_CONFIG
Output
High Z
000b
STAT2_CONFIG
Output
High Z
000b
STAT3_CONFIG
Output
High Z
000b
3.13 GS9090 Low-latency Mode
When the IOPROC_EN pin is set LOW, the GS9090 will enter a low-latency mode
such that the parallel data will be output with the minimum PCLK latency possible.
The FIFO and all processing blocks except the descrambling and word alignment
blocks will be bypassed when SMPTE_BYPASS is HIGH.
Low-latency mode will also be selected when SMPTE_BYPASS is set LOW,
regardless of the setting of the IOPROC_EN signal (see Table 3-20).
In DVB-ASI mode, the device will have a higher latency than low-latency mode,
although this latency will be less than SMPTE mode.
NOTE: When in low-latency mode, the STAT pin output of the ANC packet flag is
delayed by 15 PCLK cycles with respect to the parallel video output. The length of
the flag matches the length of the ANC packet.
Table 3-20: Pin Settings in Low-latency Mode
IOPROC_EN Setting
SMPTE_BYPASS
Setting
Latency (PCLK Cycles)
LOW
LOW
9
HIGH
LOW
10
LOW
HIGH
10
HIGH
HIGH
25
NOTE: Latency applies to parallel processing core only.
When the GS9090 is configured for low-latency mode, the H, V, and F output timing
will be TRS based blanking only as shown in Figure 3-14. Active line-based timing
is not available and the setting of the H_CONFIG host interface bit will be ignored.
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GS9090 Data Sheet
PCLK
Y/Cr/Cb DATA OUT
3FF
000
000
XYZ
(eav)
3FF
000
000
XYZ
(sav)
H
V
F
Figure 3-14: H,V,F Timing In Low-latency Mode
3.14 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 GS9090 and/or to provide
additional status information through configuration registers in the device.
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.
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.
When operating in GSPI mode, the SCLK, SDIN, and CS signals are provided by
the application interface. The SDOUT pin is a non-clocked loop-through of SDIN
and may be connected to the SDIN of another device, allowing multiple devices to
be connected to the GSPI chain. The interface is illustrated in Figure 3-15.
Application Host
GS9090
SCLK
CS1
SDOUT
SCLK
CS
SDIN
SDOUT
GS9090
SCLK
CS2
CS
SDIN
SDIN
SDOUT
Figure 3-15: GSPI Application Interface Connection
All read or write access to the GS9090 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.
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GS9090 Data Sheet
3.14.1 Command Word Description
The command word consists of a 16-bit word transmitted MSB first and contains a
read/write bit, an Auto-Increment bit and a 12-bit address. Figure 3-16 shows the
command word format and bit configurations.
Command words are clocked into the GS9090 on the rising edge of the serial clock
SCLK, which operates in a burst fashion.
When the Auto-Increment bit is set LOW, each command word must be followed
by only one data word to ensure proper operation. If the Auto-Increment bit is set
HIGH, the following data word will be written into the address specified in the
command word, and subsequent data words will be written into incremental
addresses from the previous data word. This facilitates multiple address writes
without sending a command word for each data word.
Auto-Increment may be used for both read and write access.
3.14.2 Data Read and Write Timing
Read and write mode timing for the GSPI interface is shown in Figure 3-18 and
Figure 3-19 respectively. The timing parameters are defined in Table 3-21.
When several devices are connected to the GSPI chain, only one CS must be
asserted during a read sequence.
During the write sequence, all command and following data words input at the
SDIN pin are output at the SDOUT pin as is. Where several devices are connected
to the GSPI chain, data can be written simultaneously to all the devices that have
CS set LOW.
Table 3-21: GSPI Timing Parameters
Parameter
Definition
Specification
t0
The minimum duration of time chip select, CS, must be
LOW before the first SCLK rising edge.
1.5 ns
t1
The minimum SCLK period.
18.5 ns
t2
Duty cycle tolerated by SCLK.
t3
Minimum input setup time.
1.5 ns
t4
Write Cycle: the minimum duration of time between the
last SCLK command (or data word if the Auto-Increment
bit is HIGH) and the first SCLK of the data word.
37.1 ns
t5
Read Cycle: the minimum duration of time between the
last SCLK command (or data word if the Auto-Increment
bit is HIGH) and the first SCLK of the data word.
148.4 ns
t5
Read Cycle - FIFO in ANC Extraction Mode: the minimum
duration of time between the last SCLK command (or data
word if the Auto-Increment bit is HIGH) and the first SCLK
of the data word.
222.6 ns
t6
Minimum output hold time.
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GS9090 Data Sheet
Table 3-21: GSPI Timing Parameters (Continued)
Parameter
Definition
Specification
t7
The minimum duration of time between the last SCLK of
the GSPI transaction and when CS can be set HIGH.
37.1 ns
t8
Minimum input hold time.
1.5 ns
LSB
MSB
R/W RSV
RSV
AutoInc
A10
A11
A8
A9
RSV = Reserved. Must be set to zero.
A7
A5
A6
A4
A3
A2
A1
D3
D2
D1
A0
R/W: Read command when R/W = 1
Write command when R/W = 0
Figure 3-16: Command Word Format
MSB
D15
LSB
D14
D13
D12
D11
D10
D8
D9
D7
D5
D6
D4
D0
Figure 3-17: Data Word Format
t5
SCLK
t6
CS
SDIN
R/W
RSV
RSV
AutoInc
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
SDOUT
R/W
RSV
RSV
AutoInc
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D1
D2
D0
Figure 3-18: GSPI Read Mode Timing
t0
t7
t4
t1
SCLK
t3
CS
t2
t8
SDIN
R/W
RSV
RSV
AutoInc
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
SDOUT
R/W
RSV
RSV
AutoInc
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Figure 3-19: GSPI Write Mode Timing
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GS9090 Data Sheet
3.14.3 Configuration and Status Registers
Table 3-22 summarizes the GS9090'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.
Table 3-22: GS9090 Internal Registers
Address
Register Name
Reference
00h
IOPROC_DISABLE
Error Correction and Insertion on page 43
01h
ERROR_STATUS
Error Detection and Indication on page 38
02h
EDH_FLAG_IN
EDH Flag Detection on page 33
03h
EDH_FLAG_OUT
EDH Flag Detection on page 33
04h
DATA_FORMAT
Video Standard Indication on page 38
05h
IO_CONFIG
Programmable Multi-Function Outputs on page 56
06h
FIFO_EMPTY_OFFSET
Reading From the FIFO on page 48
07h
FIFO_FULL_OFFSET
Reading From the FIFO on page 48
08h - 0Eh
ANC_TYPE
Ancillary Data Detection and Indication on page 31
11h - 14h
RASTER_STRUCTURE
Automatic Video Standard and Data Format
Detection on page 37
15h - 24h
EDH_CALC_RANGES
EDH CRC Error Detection on page 40
25h
ERROR_MASK
Error Detection and Indication on page 38
28h
FIFO_LD_POSITION
Programmable FIFO Load Position on page 30
02Ch - 42Bh
INTERNAL FIFO
Ancillary Data Extraction Mode on page 51
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GS9090 Data Sheet
3.15 Reset Operation
When the RESET signal on the GS9090 is de-asserted (RESET = LOW to HIGH)
the LOCKED and DATA[9:0] signals are valid after a period of 200ns after fhe rising
edge of the RESET signal. (See Figure 3-20)
The application layer should not sample the LOCKED or DATA[9:0] signals during
this time.
RESET
LOCKED
DOUT[9:0]
Invalid
Data
200ns
Figure 3-20: Reset Timing
3.16 JTAG Operation
When the JTAG/HOST pin is set HIGH by the application layer, the host interface
port (as described in GSPI Host Interface on page 59) will be configured for JTAG
test operation. In this mode, pins 16, 17, 19, and 20 become TMS, TCK, TDO, and
TDI respectively. In addition, the RESET pin will operate as the test reset pin, as
well as resetting the internal registers.
Boundary scan testing using the JTAG interface will be possible in this mode.
There are two methods in which JTAG can be used on the GS9090:
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 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 3-21.
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 3-22.
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GS9090 Data Sheet
Application HOST
GS9090
CS_TMS
SCLK_TCK
SDIN_TDI
SDOUT_TDO
JTAG_EN
In-circuit ATE probe
Figure 3-21: In-Circuit JTAG
Application HOST
GS9090
CS_TMS
SCLK_TCK
SDIN_TDI
SDOUT_TDO
JTAG_EN
Tri-State
In-circuit ATE probe
Figure 3-22: System JTAG
3.17 Device Power Up
The GS9090 has a recommended power supply sequence. To ensure correct
power up, power the CORE_VDD pins before the IO_VDD pins. In order to initialize
all internal operating conditions to their default state the application layer must hold
the RESET pin LOW for a minimum of treset = 1ms. (See Figure 3-23)
Device pins can be driven prior to power up without causing damage.
+1.71V
+1.8V
CORE_VDD
treset
treset
Reset
Reset
RESET
Figure 3-23: Reset pulse
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GS9090 Data Sheet
4. References & Relevant Standards
SMPTE 125M
Component video signal 4:2:2 – bit parallel interface
SMPTE 259M
10-Bit 4:2:2 Component and 4fSC Composite Digital Signals - Serial Digital
Interface
SMPTE 291M
Ancillary Data Packet and Space Formatting
SMPTE 293M
720 x 483 active line at 59.94 Hz progressive scan production – digital
representation
SMPTE 305.2M
Serial Data Transport 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
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GS9090 Data Sheet
5. Application Information
5.1 Typical Application Circuit (Part A)
CD
MUTE
EQ_VCC
EQ_VCC
1
13
VCC_D
6.2n
MUTE
VCC_A
SDI
14
15
CD
16
10n
10n
VEE_D
VEE_A
12
EQ_GND
EQ_GND
2
1u
SDO
SDI
11
SDO
GS9074A
75
3
1u
VEE_A
EQ_GND
6
5
7
MCLADJ
BYPASS
37R4
AGC
4
75
SDO
SDI
AGC
EQ_GND
VEE_D
10
SDO
9
EQ_GND
8
MCLADJ
470n
470n
EQ_GND
BYPASS
EQ_GND
NOTE: All resistors in Ohms, capacitors in Farads,
and inductors in Henrys, unless otherwise noted.
NOTE: For up-to-date component values and detailed operation of the equalizer,
please see the GS9074A data sheet.
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GS9090 Data Sheet
5.2 Typical Application Circuit (Part B)
+1.8V
10n
DATA_ERRORb
GND_D
LOCKED
1u
+1.8V _A
0
DVB_ASI
0
SMPTE_BYPASSb
(NP)
JTAG_HOSTb
+1.8V_A
1u
RESETb
100n
100k
+1.8V
GND_D
IOPROC_EN
10n
GND_A
AUTO_MANb
GND_A
GND_A
FW_EN
10n
FIFO_EN
(NP)
GND_A
EQ_VCC
NP (0)
PCLK
IO_VDD
0
DVB_ASI
LOCKED
FIFO_EN
FW_EN
AUTO_MANb
SMPTE_BYPASSb
GND_D
4n7
LF+
VCO_GND
LB_CONT
VCO_VDD
FIFO_EN
FW_EN
AUTO/MAN
SMPTE_BYPASS
CORE_GND
DVB_ASI
LOCKED
CORE_VDD
PCLK
IO_VDD
56
55
54
53
52
51
50
49
48
47
46
45
44
43
10n
NP
(NP)
GND_A
10n
1u
+1.8V_A
EQ_GND
1u
DATA[9..0]
GND_D
GND_A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1u
DDI
DDIb
10n
1u
EQ_GND
DOUT9
DOUT8
DOUT7
DOUT6
DOUT5
DOUT4
DOUT3
DOUT2
DOUT1
DOUT0
RD_RESETb
RD_CLK
IO_VDD
CORE_VDD
CS_TMS
SCLK_TCK
CORE_GND
SDOUT_TDO
SDIN_TDI
IO_VDD
DATA_ERROR
STAT0
IO_GND
STAT1
STAT2
STAT3
IO_GND
GND_A
IOPROC_EN
JTAG_HOSTb
RESETb
GS9090
42
41
40
39
38
37
36
35
34
33
32
31
30
29
10n
+1.8V
1u
15
16
17
18
19
20
21
22
23
24
25
26
27
28
EQ_GND
IO_GND
DOUT9
DOUT8
DOUT7
DOUT6
DOUT5
DOUT4
DOUT3
DOUT2
DOUT1
DOUT0
RD_RESET
RD_CLK
IO_VDD
10n
GND_D
GND_D
GND_D
(NP)
(NP)
(NP)
(NP)
(NP)
(NP)
DATA_ERRORb
1u
LFPLL_GND
PLL_VDD
BUFF_VDD
DDI
DDI
BUFF_GND
TERM
NC
VBG
NC
IOPROC_EN
JTAG/HOST
RESET
STAT2
STAT1
STAT0
IO_VDD
1u
GND_D
STAT3
10n
IO_VDD
GND_D
100K
100K
100K
SCLK_TCK
SDIN_TDI
SDOUT_TDO
CSb_TMS
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GS9090 Data Sheet
6. Package & Ordering Information
6.1 Package Dimensions
0.40 +/- 0.05
A
8.00
6.76 +/- 0.10
B
PIN 1 AREA
3.38
8.00
CENTER PAD
DETAIL B
2X
0.15
0.10
C
0.15
+0.03
C
0.23-0.02
0.50
0.20 REF
2X
6.76 +/- 0.10
6.76 +/- 0.10
3.38
C
56X
0.10
0.05
C
M C A B
M C
DATUM A OR B
56X
C
0.90 +/- 0.10
SEATING PLANE
+0.03
0.02-0.02
0.08
0.50/2
TERMINAL TIP
ALL DIMENSIONS IN MM
0.50
DETAIL B
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GS9090 Data Sheet
6.2 Recommended PCB Footprint
0.25
0.50
0.55
7.70
CENTER PAD
6.76
NOTE: All dimensions
are in millimeters.
6.76
7.70
The Center Pad of the PCB footprint should be connected to the CORE_GND
plane by a minimum of 25 vias.
NOTE: Suggested dimensions only. Final dimensions should conform to customer
design rules and process optimizations.
6.3 Packaging Data
Parameter
Value
Package Type
8mm x 8mm 56-pin QFN
Package Drawing Reference
JEDEC M0220
Moisture Sensitivity Level
3
Junction to Case Thermal Resistance, θj-c
12.2°C/W
Junction to Air Thermal Resistance, θj-a (at zero airflow)
25.8°C/W
Psi
9.1°C/W
Pb-free and RoHS compliant
Yes
6.4 Ordering Information
Part Number
Package
Temperature Range
GS9090-CNE3
56-pin QFN
0oC to 70oC
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GS9090 Data Sheet
7. Revision History
Version
ECR
Date
Changes and/or Modifications
A
130109
August 2003
New Document.
B
133382
April 2004
Reflected recent design changes in Section 3.
Updated Electrical Characteristics tables. Expanded
section on EDH flags. Transferred document to new
template.
C
133757
June 2004
Modified Section 3.16. Added new reflow profiles.
0
135948
March 2005
Converted to Preliminary Data Sheet. Updated pinout
diagram to show center pad. Updated pin descriptions
to add center pad. Added Reset Operation section.
Updated Package Dimensions to provide clarity on
center pad. Added Packaging Data Section. Added
Recommended PCB Footprint Section. Updated
Absolute Maximum Ratings table. Added Application
Information Section with Typical Application Circuits.
1
136665
July 2005
Converted to Data Sheet. Updated input swing
minimum value in AC electrical characteristics and
added Figure 2-1 to clarify meaning. Updated GSPI
SCLK to show as a burst clock rather than a
continuous one. Corrected the units for Input
Termination Resistance in the DC Electrical
Characteristics table. Updated ESD notes in Absolute
Maximum Ratings table. Updated Operational
Temperature Range in DC Electrical Characteristics
table. Corrected minor typing errors.
CAUTION
ELECTROSTATIC SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION
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.
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 2003 Gennum Corporation. All rights reserved. Printed in Canada.
www.gennum.com
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