參數(shù)資料
型號: ADV7321
廠商: Analog Devices, Inc.
英文描述: Multiformat 216 MHz Video Encoder with Six NSV 12-Bit DACs
中文描述: 多格式視頻編碼器216兆赫六噪聲整形的12位DAC
文件頁數(shù): 68/88頁
文件大?。?/td> 1002K
代理商: ADV7321
ADV7320/ADV7321
APPENDIX 2—SD WIDE SCREEN SIGNALING
[Subaddresses 0x59, 0x5A, 0x5B]
Rev. 0 | Page 68 of 88
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 of these bits 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 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 40. 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 97. WSS Waveform Diagram
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ADV7321KSTZ Multiformat 216 MHz Video Encoder with Six NSV 12-Bit DACs
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