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參數(shù)資料
| 型號(hào)： | ADV7171KSZ-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 37/64頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC VIDEO ENC NTSC 44-MQFP |
| 產(chǎn)品變化通告： | Product Discontinuance 27/Oct/2011 |
| 標(biāo)準(zhǔn)包裝： | 800 |
| 類型： | 視頻編碼器 |
| 應(yīng)用： | 機(jī)頂盒，視頻播放器 |
| 電壓 - 電源，模擬： | 4.75 V ~ 5.25 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 44-QFP |
| 供應(yīng)商設(shè)備封裝： | 44-MQFP（10x10） |
| 包裝： | 帶卷 (TR) |
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ADV7170/ADV7171
Rev. C | Page 42 of 64
APPENDIX 4—WIDE SCREEN SIGNALING
The ADV7170/ADV7171 support wide screen signaling (WSS) conforming to the standard. WSS data is transmitted on Line 23.
WSS data can only be transmitted when the ADV7170/ADV7171 are 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 58). 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 Bit C/W07 is set to a Logic Level 1, it enables the WSS data to be transmitted on Line 23. The latter portion of Line 23 (42.5 μs from the
falling edge of HSYNC) is available for the insertion of video.
Function of CGMS Bits
Bit 0 to Bit 2
Aspect Ratio/Format/Position
Bit 3 is odd parity check of Bit 0 to Bit 2
B0
B1
B2
B3
Aspect Ratio
Format
Position
0
1
4:3
Full format
Nonapplicable
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
Nonapplicable
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
11.0
μs
W0
W1 W2
W3 W4
W5 W6
W7
W8 W9 W10 W11 W12 W13
500mV
RUN-IN
SEQUENCE
START
CODE
ACTIVE
VIDEO
38.4
μs
42.5
μs
00221-058
Figure 58. WSS Waveform Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADV7171SU | 制造商:AD 制造商全稱:Analog Devices 功能描述:Digital PAL/NTSC Video Encoder with 10-Bit SSAF⑩ and Advanced Power Management |
| ADV7171WBSZ-REEL | 制造商:AD 制造商全稱:Analog Devices 功能描述:Digital PAL/NTSC Video Encoder |
| ADV7172 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Digital PAL/NTSC Video Encoder with Six DACs 10 Bits, Color Control and Enhanced Power Management |
| ADV7172KST | 制造商:AD 制造商全稱:Analog Devices 功能描述:Digital PAL/NTSC Video Encoder with Six DACs 10 Bits, Color Control and Enhanced Power Management |
| ADV7172KST-REEL | 制造商:Analog Devices 功能描述: |
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