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參數(shù)資料
| 型號： | ADV7173KSTZ-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 40/60頁 |
| 文件大小： | 0K |
| 描述： | IC DAC VIDEO NTSC 6-CH 48LQFP |
| 標(biāo)準(zhǔn)包裝： | 2,000 |
| 類型： | 視頻編碼器 |
| 應(yīng)用： | 多媒體 |
| 電壓 - 電源，模擬： | 4.75 V ~ 5.25 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-LQFP |
| 供應(yīng)商設(shè)備封裝： | 48-LQFP（7x7） |
| 包裝： | 帶卷 (TR) |
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REV. B
ADV7172/ADV7173
–45–
APPENDIX 4
WIDE SCREEN SIGNALING
The ADV7172/ADV7173 supports Wide Screen Signaling (WSS) conforming to the standard. WSS data is transmitted on Line 23.
WSS data can only be transmitted when the ADV7172/ADV7173 is configured in PAL mode. The WSS data is 14 bits long, the
function of each of these bits is as shown below. The WSS data is preceded by a run-in sequence and a Start Code (see Figure 71).
The bits are output from the configuration registers in the following order: C/W20 = W0, C/W21 = W1, C/W22 = W2, C/W23 = W3,
C/W24 = W4, C/W25 = W5, C/W26 = W6, C/W27 = W7, C/W10 = W8, C/W11 = W9, C/W12 = W10, C/W13 = W11, C/W14 = W12,
C/W15 = W13. If the Bit C/W07 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
s from the falling edge of HSYNC) is available for the insertion of video.
Function of CGMS Bits
Bit 0–Bit 2
Aspect Ratio/Format/Position
Bit 3 is odd parity check of Bit 0–Bit 2
B0 B1 B2 B3
Aspect Ratio
Format
Position
0001
4:3
Full Format
Nonapplicable
1000
14:9
Letterbox
Center
0100
14:9
Letterbox
Top
1101
16:9
Letterbox
Center
0010
16:9
Letterbox
Top
1011
>16:9
Letterbox
Center
0111
14:9
Full Format
Center
1110
16:9
Nonapplicable
11.0 s
W0
W1 W2
W3 W4
W5
W6 W7
W8 W9 W10 W11 W12 W13
500mV
RUN-IN
SEQUENCE
START
CODE
ACTIVE
VIDEO
38.4 s
42.5 s
Figure 71. WSS Waveform Diagram
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
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相關(guān)代理商/技術(shù)參數(shù) |
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| ADV7174 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Chip Scale PAL/NTSC Video Encoder with Advanced Power Management |
| ADV7174BCP | 制造商:AD 制造商全稱:Analog Devices 功能描述:Chip Scale PAL/NTSC Video Encoder with Advanced Power Management |
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| ADV7174KCP | 制造商:AD 制造商全稱:Analog Devices 功能描述:Chip Scale PAL/NTSC Video Encoder with Advanced Power Management |
| ADV7174KCP-REEL | 制造商:AD 制造商全稱:Analog Devices 功能描述:Chip Scale PAL/NTSC Video Encoder with Advanced Power Management |
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