參數(shù)資料
型號(hào): TVP5146PFPG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 顏色信號(hào)轉(zhuǎn)換
英文描述: COLOR SIGNAL DECODER, PQFP80
封裝: GREEN, PLASTIC, HTQFP-80
文件頁數(shù): 78/109頁
文件大小: 1658K
代理商: TVP5146PFPG4
62
SLES084C August 2007
TVP5146
Luma peak B: Use of the luma peak as a video amplitude reference for the front-end feedback
type AGC algorithm.
0 = Enabled (default)
1 = Disabled
Composite peak: Use of the composite peak as a video amplitude reference for the front-end
feedback type AGC algorithm.
NOTE: Required for CVBS and SCART (with color burst) video sources.
0 = Enabled (default)
1 = Disabled
Color burst B: Use of the color burst amplitude as a video amplitude reference for the 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 the front-end feedback
type AGC algorithm.
0 = Enabled (default)
1 = Disabled
NOTE: If all 4 bits of the lower nibble are set to logic 1 (that is, no amplitude reference selected),
then the front-end analog and digital gains are automatically set to nominal values of 2 and
2304, respectively.
If all 4 bits of the upper nibble are set to logic 1 (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%.
2.11.59
AGC Increment Speed Register
Subaddress
78h
Default
06h
7
6
5
4
3
2
1
0
Reserved
AGC increment speed [3:0]
AGC increment speed: Adjusts gain increment speed.
111 = 7 (slowest)
110 = 6 (default)
L
000 = 0 (fastest)
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