adv7322 Analog Devices, Inc., adv7322 Datasheet - Page 68

• Manufacturer Part Number: adv7322
• Description: Multiformat 11-bit Hdtv Video Encoder
• Manufacturer: Analog Devices, Inc.

ADV7322
APPENDIX 2—SD WIDE SCREEN SIGNALING
[Subaddresses 0x59, 0x5A, 0x5B]
The ADV7322 supports wide screen signaling (WSS)
conforming to the standard. WSS data is transmitted on Line 23.
WSS data can be transmitted only when the device is
configured in PAL mode. The WSS data is 14 bits long, and the
function of each of these bits is shown in Table 38. The WSS
Table 38. Function of WSS Bits
Bit
Bit 0 to Bit 2
Bit 3
B0
0
1
0
1
0
1
0
1
1
B4
0
1
B5
0
1
B6
0
1
B7
B9
0
1
0
1
B11
0
1
B12
B13
500mV
B1
0
0
1
1
0
0
1
1
1
11.0Ps
B2
0
0
0
0
1
1
1
1
1
B10
0
0
1
1
SEQUENCE
RUN-IN
B3
1
0
0
1
0
1
1
0
0
START
CODE
Description
Aspect Ratio/Format/Position
Odd Parity Check of Bit 0 to Bit 2
Aspect Ratio
4:3
14:9
14:9
16:9
16:9
>16:9
14:9
16:9
16:9
Camera Mode
Film Mode
Standard Coding
Motion Adaptive Color Plus
No Helper
Modulated Helper
Reserved
No Open Subtitles
Subtitles in Active Image Area
Subtitles out of Active Image Area
Reserved
No Surround Sound Information
Surround Sound Mode
Reserved
Reserved
38.4Ps
42.5Ps
W0
W1
Figure 96. WSS Waveform Diagram
W2
Rev. PrA | Page 68 of 88
W3
W4
W5
data is preceded by a run-in sequence and a start code; see
Figure 95. If SD WSS [Address 0x59, Bit 7] is set to Logic 1, it
enables the WSS data to be transmitted on Line 23. The latter
portion of Line 23 (42.5 s from the falling edge of HSYNC ) is
available for the insertion of video. It is possible to blank the
WSS portion of Line 23 with Subaddress 0x61, Bit 7.
W6
W7
W8
W9 W10 W11 W12 W13
Format
Full Format
Letterbox
Letterbox
Letterbox
Letterbox
Letterbox
Full Format
N/A
Preliminary Technical Data
ACTIVE
VIDEO
Position
N/A
Center
Top
Center
Top
Center
Center
N/A