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| 型號： | ADV7303AKST |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 顏色信號轉(zhuǎn)換 |
| 英文描述： | Sand Paper; Abrasive Grade:T; Color:White; Pack Quantity:3; Roll Length:30ft; Width:4" |
| 中文描述： | COLOR SIGNAL ENCODER, PQFP64 |
| 封裝： | PLASTIC, MS-026BCD, LQFP-64 |
| 文件頁數(shù)： | 53/68頁 |
| 文件大小： | 1177K |
| 代理商： | ADV7303AKST |
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REV. A
ADV7302A/ADV7303A
–53–
Appendix B
SD WIDE SCREEN SIGNALING
[Subaddresses 59h, 5Ah, and 5Bh]
The ADV7302A/ADV7303A supports Wide Screen Signaling
(WSS) conforming to the standard. WSS data is transmitted on
Line 23. WSS data can only be transmitted when the ADV7302A/
ADV7303A is configured in PAL Mode. The WSS data is 14 bits
long. The function of each of these bits is as shown in Table XXV.
The WSS data is preceded by a run-in sequence and a start code
(see Figure 82). If SD WSS [Address 59h, Bit 7] is set to a Logic
“
1,
”
it enables the WSS data to be transmitted on Line 23. The
latter portion of Line 23 (42.5
μ
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 61h, Bit 7.
Table XXV. Function of WSS Bits
Bit
Function
0
Aspect Ratio
1
Format
2
Position
3
Odd Parity Check of Bits 0
–
2
4
0 = Camera Mode
1 = Film Mode
5
0 = Standard Coding
1 = Motion Adaptive Color Plus
6
0 = No Helper
1 = Modulated Helper
7
Reserved
8
Reserved
9
–
10
00 = No Open Subtitles
10 = Subtitles Inside Active Image Area
01 = Subtitles Outside Active Image Area
11 = Reserved
11
0 = No Surround Sound Information
1 = Surround Sound Mode
12
–
13
Reserved
Table XXVI. Function of WSS Bits 0–3
B0 B1 B2 B3
Aspect Ratio
Format
Position
0
1
0
1
0
1
0
1
0
0
1
1
0
0
1
1
0
0
0
0
1
1
1
1
1
0
0
1
0
1
1
0
4:3
14:9
14:9
16:9
16:9
>16:9
14:9
16:9
Full Format
Letterbox
Letterbox
Letterbox
Letterbox
Letterbox
Full Format
N/A
N/A
Center
Top
Center
Top
Center
Center
N/A
W0 W1 W2 W3 W4 W5 W6 W7 W8 W9 W10
W11W12W13
ACTIVE
VIDEO
RUN-IN
SEQUENCE
START
CODE
500mV
11.0 s
38.4 s
42.5 s
Figure 82. WSS Waveform
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