ADV7181 AD [Analog Devices], ADV7181 Datasheet - Page 47

• Manufacturer Part Number: ADV7181
• Description: Multiformat SDTV Video Decoder
• Manufacturer: AD [Analog Devices]

Wide Screen Signaling Data
WSS1[7:0], Address 0x91 [7:0],
WSS2[7:0], Address 0x92 [7:0]
Figure 30 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.
Table 56. WSS Access Information
Signal Name
WSS1 [7:0]
WSS2 [5:0]
Table 57. EDTV Access Information
Signal Name
EDTV1[7:0]
EDTV2[7:0]
EDTV3[7:0]
Register Location
WSS 1 [7:0]
WSS 2 [5:0]
Register Location
EDTV 1 [7:0]
EDTV 2 [7:0]
EDTV 3 [7:0]
11.0µs
SEQUENCE
RUN-IN
0
1
2
START
CODE
3
EDTV1[7:0]
4
5
38.4µs
42.5µs
0
Figure 31. EDTV Data Extraction
Figure 30.WSS Data Extraction
6
1
7
147d
148d
149d
Rev. 0 | Page 47 of 96
145d
146d
2
0
WSS1[7:0]
3
1 2 3 4
Address
Address
EDTV2[7:0]
4
5
0x91
0x92
0x93
0x94
0x95
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 31 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.
6
5
7
6 7
0
0
1
WSS2[5:0]
Register Default Value
Readback Only
Readback Only
EDTV3[5:0]
Register Default Value
Readback Only
Readback Only
Readback Only
1 2
2
3
3
4
4
NOT SUPPORTED
5
5
ACTIVE
VIDEO
ADV7181B