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| 型號： | ADV7181 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Multiformat SDTV Video Decoder |
| 中文描述： | 標(biāo)清多格式視頻解碼器 |
| 文件頁數(shù)： | 34/96頁 |
| 文件大小： | 873K |
| 代理商： | ADV7181 |
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ADV7181B
COMB FILTERS
The comb filters of the ADV7181B have been greatly improved
to automatically handle video of all types, standards, and levels
of quality. The NTSC and PAL configuration registers allow the
user to customize comb filter operation, depending on which
video standard is detected (by autodetection) or selected (by
manual programming). In addition to the bits listed in this
section, there are some further ADI internal controls; contact
ADI for more information.
NTSC Comb Filter Settings
Used for NTSC-M/J CVBS inputs.
Rev. 0 | Page 34 of 96
NSFSEL[1:0] Split Filter Selection NTSC, Address 0x19 [3:2]
The NSFSEL[1:0] control selects how much of the overall signal
bandwidth is fed to the combs. A narrow split filter selection
gives better performance on diagonal lines, but leaves more dot
crawl in the final output image. The opposite is true for selecting
a wide bandwidth split filter.
Table 42. NSFSEL Function
NSFSEL[1:0]
00 (default)
01
10
11
Description
Narrow
Medium
Medium
Wide
CTAPSN[1:0] Chroma Comb Taps NTSC,
Address 0x38 [7:6]
Table 43. CTAPSN Function
CTAPSN[1:0]
Description
00
Do not use.
01
NTSC chroma comb adapts 3 lines (3 taps) to 2
lines (2 taps).
10 (default)
NTSC chroma comb adapts 5 lines (5 taps) to 3
lines (3 taps).
11
NTSC chroma comb adapts 5 lines (5 taps) to 4
lines (4 taps).
CCMN[2:0] Chroma Comb Mode NTSC, Address 0x38 [5:3]
Table 44. CCMN Function
CCMN[2:0]
Description
0xx (default)
Adaptive comb mode.
Configuration
Adaptive 3-line chroma comb for CTAPSN = 01.
Adaptive 4-line chroma comb for CTAPSN = 10.
Adaptive 5-line chroma comb for CTAPSN = 11.
Fixed 2-line chroma comb for CTAPSN = 01.
Fixed 3-line chroma comb for CTAPSN = 10.
Fixed 4-line chroma comb for CTAPSN = 11.
Fixed 3-line chroma comb for CTAPSN = 01.
Fixed 4-line chroma comb for CTAPSN = 10.
Fixed 5-line chroma comb for CTAPSN = 11.
Fixed 2-line chroma comb for CTAPSN = 01.
Fixed 3-line chroma comb for CTAPSN = 10.
Fixed 4-line chroma comb for CTAPSN = 11.
100
101
Disable chroma comb.
Fixed chroma comb (top lines of line memory).
110
Fixed chroma comb (all lines of line memory).
111
Fixed chroma comb (bottom lines of line memory).
YCMN[2:0] Luma Comb Mode NTSC, Address 0x38 [2:0]
Table 45. YCMN Function
YCMN[2:0]
Description
0xx (default)
Adaptive comb mode.
100
Disable luma comb.
101
Fixed luma comb (top lines of line memory).
110
Fixed luma comb (all lines of line memory).
111
Fixed luma comb (bottom lines of line memory).
Configuration
Adaptive 3-line (3 taps) luma comb.
Use low-pass/notch filter; see the Y Shaping Filter section.
Fixed 2-line (2 taps) luma comb.
Fixed 3-line (3 taps) luma comb.
Fixed 2-line (2 taps) luma comb.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADV7181B | Multiformat SDTV Video Decoder |
| ADV7181BBCPZ | Multiformat SDTV Video Decoder |
| ADV7181BBSTZ | Multiformat SDTV Video Decoder |
| ADV7181BCP | Multiformat SDTV Video Decoder |
| ADV7181BST | Multiformat SDTV Video Decoder |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADV7181B | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat SDTV Video Decoder |
| ADV7181BBCPZ | 制造商:Analog Devices 功能描述:Video Decoder 3ADC 9-Bit 64-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述:ADV718XB DECODER FAMILY UPDATES - Bulk 制造商:Analog Devices 功能描述:IC VIDEO ENCODER |
| ADV7181BBSTZ | 制造商:Analog Devices 功能描述:Video Decoder 3ADC 9-Bit 64-Pin LQFP 制造商:Analog Devices 功能描述:IC VIDEO ENCODER |
| ADV7181BCP | 制造商:Analog Devices 功能描述:Video Decoder 3ADC 9-Bit 64-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述:10BIT NTSC/PAL/SECAM VIDEO DECODER I.C. - Bulk |
| ADV7181BCPZ | 制造商:Analog Devices 功能描述: |
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