參數(shù)資料
型號(hào)： ADV7180
廠商： Analog Devices, Inc.
英文描述： 10-Bit, 4 x Oversampling SDTV Video Decoder
中文描述： 10位，4個(gè)采樣標(biāo)清視頻解碼器
文件頁(yè)數(shù)： 38/112頁(yè)
文件大小： 1320K
代理商： ADV7180
ADV7180
COMB FILTERS
The comb filters of the ADV7180 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 internal controls (based on
Analog Devices proprietary algorithms); contact local Analog
Devices field engineers for more information.
Rev. A | Page 38 of 112
NTSC Comb Filter Settings
Used for NTSC M/J CVBS inputs.
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
results in better performance on diagonal lines, but more dot
crawl in the final output image. The opposite is true for selecting
a wide bandwidth split filter.
Table 49. 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 50. CTAPSN Function
CTAPSN[1:0]
00
01
10 (default)
11
CCMN[2:0] Chroma Comb Mode NTSC, Address 0x38 [5:3]
Description
Do not use
NTSC chroma comb adapts three lines (three taps) to two lines (two taps)
NTSC chroma comb adapts five lines (five taps) to three lines (three taps)
NTSC chroma comb adapts five lines (five taps) to four lines (four taps)
Table 51. CCMN Function
CCMN[2:0]
0xx (default)
Description
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)
相關(guān)PDF資料
PDF描述
ADV7180BCPZ 10-Bit, 4 x Oversampling SDTV Video Decoder
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADV7180_12 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:10-Bit, 4?? Oversampling SDTV Video Decoder
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ADV7180BCP32Z-RL 制造商:Analog Devices 功能描述:IC
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ADV7180BCPZ 制造商:Analog Devices 功能描述:IC VIDEO DECODER 10BIT 57.27MSPS LFCSP40
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