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 57), 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
ANC DATA
ANC DATA
3FF
3FF
DBN
DBN
CHROMA DATA OUT
DC
ANC DATA
CSUM
ANC DATA
YANC
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
DID
CHROMA DATA OUT
DBN
BLANK
000
3FF
ANC DATA
ANC DATA
ANC DATA
YANC
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
GS1559 HD-LINX™ II Multi-Rate Deserializer with
Loop-Through Cable Driver
Data Sheet
41 of 71
30572 - 8
July 2008
GENNUM [ GENNUM CORPORATION ]
