GS1559 Data Sheet
In SD mode, (SD/HD = HIGH), the YANC and CANC signal operation will depend
on the output data format. For 20-bit demultiplexed data, (see Parallel Data
Outputs on page 61), the YANC and CANC signals will operate independently.
However, for 10-bit multiplexed data, the YANC and CANC signals will both be
HIGH whenever ancillary data is detected.
The signals will be HIGH from the start of the ancillary data preamble and will
remain HIGH until after the ancillary data checksum.
The operation of the YANC and CANC signals is shown in Figure 4-6.
PCLK
LUMA DATA OUT
DID
DID
BLANK
000
000
3FF
3FF
DC
CSUM
BLANK
CSUM
ANC DATA
ANC DATA
3FF
3FF
DBN
DBN
CHROMA DATA OUT
YANC
DC
ANC DATA
ANC DATA
CANC
ANC DATA DETECTION - HD 20BIT OUTPUT MODE
PCLK
MULTIPLEXED
Y/Cr/Cb DATA OUT
000
CANC
YCSUM
CCSUM
000
3FF
3FF
3FF
YDID
3FF
YANC
CANC
ANC DATA DETECTION - HD 10BIT OUTPUT MODE
PCLK
LUMA DATA OUT
BLANK
ANC DATA
CSUM
3FF
DC
ANC DATA
ANC DATA
ANC DATA
ANC DATA
DID
CHROMA DATA OUT
YANC
DBN
BLANK
000
3FF
ANC DATA
ANC DATA
CANC
ANC DATA DETECTION - SD 20BIT OUTPUT MODE
PCLK
MULTIPLEXED
Y/Cr/Cb DATA OUT
CSUM
000
DID
DC
DBN
3FF
3FF
ANC DATA
ANC DATA
YANC/CANC
ANC DATA DETECTION - SD 10BIT OUTPUT MODE
Figure 4-6: YANC and CANC Output Signal Timing
30572 - 4 July 2005
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