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參數(shù)資料
| 型號： | ADV7322 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Multiformat 11-Bit HDTV Video Encoder |
| 中文描述： | 多格式11位高清晰度電視視頻編碼器 |
| 文件頁數(shù)： | 68/88頁 |
| 文件大小： | 991K |
| 代理商： | ADV7322 |
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ADV7322
Preliminary Technical Data
APPENDIX 2—SD WIDE SCREEN SIGNALING
[Subaddresses 0x59, 0x5A, 0x5B]
Rev. PrA | Page 68 of 88
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
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.
Table 38. Function of WSS Bits
Bit
Bit 0 to Bit 2
Bit 3
B0
B1
0
0
1
0
0
1
1
1
0
0
1
0
0
1
1
1
1
1
B4
0
1
B5
0
1
B6
0
1
B7
B9
0
1
0
1
B11
0
1
B12
B13
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
B2
0
0
0
0
1
1
1
1
1
B3
1
0
0
1
0
1
1
0
0
Format
Full Format
Letterbox
Letterbox
Letterbox
Letterbox
Letterbox
Full Format
N/A
Position
N/A
Center
Top
Center
Top
Center
Center
N/A
B10
0
0
1
1
ACTIVE
VIDEO
RUN-IN
SEQUENCE
START
CODE
500mV
11.0
μ
s
38.4
μ
s
42.5
μ
s
W0
W1
W2
W3
W4
W5
W6
W7
W8
W9
W10 W11 W12 W13
0
Figure 96. WSS Waveform Diagram
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