ADV7189B View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
'ADV7189B' PDF : 104 Pages View PDF
ADV7189B
CRC_ENABLE CRC CGMS-A Sequence, Address 0xB2[2]
For certain video sources, the CRC data bits can have an invalid
format. In such circumstances, the CRC checksum validation
procedure can be disabled. The CGMSD bit goes high if the
rising edge of the start bit is detected within a time window.
When CRC_ENABLE is 0, no CRC check is performed.
The CGMSD bit goes high if the rising edge of the start bit
is detected within a time window.
When CRC_ENABLE is 1 (default), CRC checksum is used to
validate the CGMS sequence. The CGMSD bit goes high for a
valid checksum. ADI recommended setting.
Wide Screen Signaling Data
WSS1[7:0], Address 0x91[7:0], WSS2[7:0], Address
0x92[7:0]
Figure 217H 31 shows the bit correspondence between the analog
video waveform and the WSS1/WSS2 registers. WSS2[7:6]
are undetermined and should be masked out by software.
EDTV Data Registers
EDTV1[7:0], Address 0x93[7:0],
EDTV2[7:0], Address 0x94[7:0],
EDTV3[7:0], Address 0x95[7:0]
Figure 218H 32 shows the bit correspondence between the analog
video waveform and the EDTV1/EDTV2/EDTV3 registers.
EDTV3[7:6] are undetermined and should be masked out by
software. EDTV3[5] is reserved for future use and, for now,
contains a 0. The three LSBs of the EDTV waveform are
currently not supported.
RUN-IN START
SEQUENCE CODE
WSS1[7:0]
WSS2[5:0]
01234567012345
ACTIVE
VIDEO
11.0μs
38.4μs
42.5μs
Figure 31. WSS Data Extraction
Table 58. WSS Access Information
Signal Name
Register Location
WSS1[7:0]
WSS 1[7:0]
WSS2[5:0]
WSS 2[5:0]
Address
145d
0x91
146d
0x92
Register Default Value
Readback Only
Readback Only
EDTV1[7:0]
012
EDTV2[7:0]
EDTV3[5:0]
NOT SUPPORTED
3 4 5 6 7 0 1 234 5 6 7 0 1 2 3 4 5
Table 59. EDTV Access Information
Signal Name
Register Location
EDTV1[7:0]
EDTV 1[7:0]
EDTV2[7:0]
EDTV 2[7:0]
EDTV3[7:0]
EDTV 3[7:0]
Figure 32. EDTV Data Extraction
147d
148d
149d
Address
0x93
0x94
0x95
Register Default Value
Readback Only
Readback Only
Readback Only
Rev. B | Page 49 of 104
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