參數(shù)資料
型號： TVP5160PNPG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 顏色信號轉(zhuǎn)換
英文描述： COLOR SIGNAL DECODER, PQFP128
封裝： PLASTIC, HTQFP-128
文件頁數(shù)： 96/119頁
文件大?。?/td> 1347K
代理商： TVP5160PNPG4
Internal Control Registers
68
February 2005 Revised April 2006
SLES135A
4.1.78
AGC White Peak Processing
Subaddress
74h
Default
00h
7
6
5
4
3
2
1
0
Luma peak A
Reserved
Color burst A
Sync height A
Luma peak B
Composite peak
Color burst B
Sync height B
Luma peak A: Use of the luma peak as a video amplitude reference for the back-end feed-forward type AGC
algorithm
0 = Enabled (default)
1 = Disabled
Color burst A: Use of the color burst amplitude as a video amplitude reference for the back-end
NOTE: Not available for SECAM, component and B/W video sources.
0 = Enabled (default)
1 = Disabled
Sync height A: Use of the sync height as a video amplitude reference for the back-end feed-forward type AGC
algorithm
0 = Enabled (default)
1 = Disabled
Luma peak B: Use of the luma peak as a video amplitude reference for front-end feedback type AGC algorithm
0 = Enabled (default)
1 = Disabled
Composite peak: Use of the composite peak as a video amplitude reference for front-end feedback type AGC
algorithm
NOTE: Required for CVBS video sources
0 = Enabled (default)
1 = Disabled
Color burst B: Use of the color burst amplitude as a video amplitude reference for front-end feedback type AGC
algorithm
NOTE: Not available for SECAM, component and B/W video sources
0 = Enabled (default)
1 = Disabled
Sync height B: Use of the sync-height as a video amplitude reference for front-end feedback type AGC
algorithm
0 = Enabled (default)
1 = Disabled
NOTE: If all 4 bits of the lower nibble are set to 1111b (that is, no amplitude reference selected),
then the front-end analog and digital gains are automatically set to nominal values.
If all 4 bits of the upper nibble are set to 1111b (that is, no amplitude reference selected), then the back-end
gain is set automatically to unity. If the input sync height is greater than 100% and the AGC-adjusted output
video amplitude becomes less than 100%, then the back-end scale factor attempts to increase the contrast
in the back-end to restore the video amplitude to 100%.
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