參數(shù)資料
型號: ADV7321KSTZ
廠商: Analog Devices Inc
文件頁數(shù): 65/88頁
文件大?。?/td> 0K
描述: IC VID ENC 6-12BIT DAC'S 64LQFP
標(biāo)準(zhǔn)包裝: 1
類型: 視頻編碼器
應(yīng)用: EVD,DVD,SD/PS/HDTV
電壓 - 電源,模擬: 2.5V
電壓 - 電源,數(shù)字: 2.5V
安裝類型: 表面貼裝
封裝/外殼: 64-LQFP
供應(yīng)商設(shè)備封裝: 64-LQFP(10x10)
包裝: 托盤
ADV7320/ADV7321
Rev. A | Page 68 of 88
APPENDIX 2—SD WIDE SCREEN SIGNALING
[Subaddresses 0x59, 0x5A, 0x5B]
The ADV7320/ADV7321 support wide screen signaling (WSS)
conforming to the ETS 300 294 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 bit is shown in Table 40. The WSS data is
preceded by a run-in sequence and a start code (see Figure 97).
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 sec after 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 40. Function of WSS Bits
Bit
Description
Bit 0 to Bit 2
Aspect ratio/format/position
Bit 3
Odd parity check of Bit 0 to Bit 2
B0
B1
B2
B3
Aspect Ratio
Format
Position
0
1
4:3
Full format
N/A
1
0
14:9
Letterbox
Center
0
1
0
14:9
Letterbox
Top
1
0
1
16:9
Letterbox
Center
0
1
0
16:9
Letterbox
Top
1
0
1
>16:9
Letterbox
Center
0
1
14:9
Full format
Center
1
0
16:9
N/A
1
0
16:9
B4
0
Camera mode
1
Film mode
B5
0
Standard coding
1
Motion adaptive color plus
B6
0
No helper
1
Modulated helper
B7
Reserved
B9
B10
0
No open subtitles
1
0
Subtitles in active image area
0
1
Subtitles out of active image area
1
Reserved
B11
0
No surround sound information
1
Surround sound mode
B12
Reserved
B13
Reserved
ACTIVE
VIDEO
RUN-IN
SEQUENCE
START
CODE
500mV
11.0
μs
38.4
μs
42.5
μs
W0
W1
W2
W3
W4
W5
W6
W7
W8
W9
W10 W11 W12 W13
05067-097
Figure 97. WSS Waveform Diagram
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