GS9092 Datasheet, PDF (21/58 Pages) Gennum Corporation – GS9092 GenLINX-R III 270Mb/s Serializer for SDI and DVB-ASI

GS9092 Data Sheet
3.2.1 Parallel Input in SMPTE Mode
When the device is operating in SMPTE mode (see SMPTE Mode on page 32), SD
data is presented to the input bus in 10-bit multiplexed format. The input data
format must be word aligned, multiplexed luma and chroma data.
NOTE: When operating the device in an 8-bit SMPTE system, the 2 LSBs
(DIN [1:0]) must be set to 0.
Table 3-1: Input Data Format Selection
Input Data Format
10-bit Data
10-bit Multiplexed SD
10-bit DVB-ASI
DIN[9:0]
DATA
Luma/Chroma
DVB-ASI data
Pin Settings
SMPTE_BYPASS
LOW
HIGH
X
DVB_ASI
LOW
LOW
HIGH
3.2.2 Parallel Input in DVB-ASI Mode
When operating in DVB-ASI mode (see DVB-ASI Mode on page 33), the device will
accept 8-bit data words on DIN[7:0] such that DIN7 = HIN is the most significant bit
of the encoded transport stream data and DIN0 = AIN is the least significant bit.
In addition, DIN9 and DIN8 will be configured as the DVB-ASI control signals
INSSYNCIN and K_IN respectively. See Control Signal Inputs on page 33 for a
description of these DVB-ASI specific input signals.
3.2.3 Parallel Input in Data-Through Mode
When operating in Data-Through mode (see Data-Through Mode on page 34), the
GS9092 passes data presented to the parallel input bus to the serial output without
performing any encoding, scrambling, or word-alignment.
3.2.4 I/O Buffers
The parallel data bus, status signal outputs, and control signal input pins are all
connected to high-impedance buffers. These buffers use either +1.8V or +3.3V
DC, supplied at the IO_VDD and IO_GND pins. For a +3.3V tolerant I/O, the
IO_VDD pins can be connected to either +1.8V or +3.3V. For a +5V tolerant I/O,
the IO_VDD pins must be supplied with +3.3V.
While RESET is LOW, STAT output pins are muted and all other output pins
become high impedance.
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