GS1670A Datasheet, PDF (34/130 Pages) Gennum Corporation – Ancillary data extraction

Table 4-5: GS1670A Output Video Data Format Selections (Continued)
Output Data
Format
10-bit multiplexed
HD format
10-bit data output
HD format
10-bit multiplexed
SD format
10-bit data output
SD format
DVB-ASI format
Pin/Register Bit Settings
20BIT
/10BIT
LOW
RATE_
SEL
LOW
SMPTE_
BYPASS
HIGH
DVB-ASI
LOW
LOW
LOW
LOW
LOW
LOW
HIGH
HIGH
LOW
LOW
HIGH
LOW
LOW
LOW
HIGH
−
HIGH
NOTE: When in Auto Mode, swap RATE_SEL with RATE_DET.
DOUT[9:0]
DOUT[19:10]
Driven LOW
Luma/Chroma
Driven LOW
DATA
Driven LOW
Luma/Chroma
Driven LOW
DATA
DOUT19 = WORD_ERR
DOUT18 = SYNC_OUT
DOUT17 = H_OUT
DOUT16 = G_OUT
DOUT15 = F_OUT
DOUT14 = E_OUT
DOUT13 = D_OUT
DOUT12 = C_OUT
DOUT11 = B_OUT
DOUT10 = A_OUT
4.8.2 Parallel Output in SMPTE Mode
When the device is operating in SMPTE mode (SMPTE_BYPASS = HIGH and DVB_ASI =
LOW), data is output in either Multiplexed or Demultiplexed form depending on the
setting of the 20bit/10bit pin.
When operating in 20-bit mode (20bit/10bit = HIGH), the output data is demultiplexed
Luma and Chroma data for SD and HD data.
When operating in 10-bit mode (20bit/10bit = LOW), the output data is multiplexed
Luma and Chroma data for SD and HD data rates. In this mode, the data is presented on
the DOUT[19:10] pins, with DOUT[9:0] being forced LOW.
4.8.3 Parallel Output in DVB-ASI Mode
In DVB-ASI mode, the 20bit/10bit pin must be set LOW to configure the output parallel
bus for 10-bit operation.
DVB-ASI mode is enabled when the AUTO/MAN bit is LOW, SMPTE_BYPASS pin is LOW
and the DVB_ASI pin is HIGH.
The extracted 8-bit data is presented on DOUT[17:10] such that DOUT[17:10] = HOUT ~
AOUT, where AOUT is the least significant bit of the decoded transport stream data.
In addition, the DOUT19 and DOUT18 pins are configured as DVB-ASI status signals
WORDERR and SYNCOUT respectively.
SYNCOUT is HIGH whenever a K28.5 sync character is output from the device.
GS1670A HD/SD SDI Receiver
Data Sheet
54388 - 1
September 2012
34 of 130