參數(shù)資料
型號： ADV7181BST
廠商： ANALOG DEVICES INC
元件分類： 顏色信號轉換
英文描述： Multiformat SDTV Video Decoder
中文描述： COLOR SIGNAL DECODER, PQFP64
封裝： LEAD FREE, MS-026BCD, LQFP-64
文件頁數(shù)： 34/96頁
文件大小： 873K
代理商： ADV7181BST
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.
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ADV7181CBSTZ 功能描述:IC VIDEO DECODER SDTV RGB 64LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉換器 系列:- 產品變化通告:Development Systems Discontinuation 26/Apr/2011 標準包裝:1 系列:- 類型:編碼器 應用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應商設備封裝:模塊 包裝:散裝 其它名稱:Q4645799
ADV7181CBSTZ-REEL 功能描述:IC VIDEO DECODER SDTV RGB 64LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉換器 系列:- 產品變化通告:Development Systems Discontinuation 26/Apr/2011 標準包裝:1 系列:- 類型:編碼器 應用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應商設備封裝:模塊 包裝:散裝 其它名稱:Q4645799
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