参数资料
型号: TVP5157PNPR
厂商: TEXAS INSTRUMENTS INC
元件分类: 颜色信号转换
英文描述: COLOR SIGNAL DECODER, PQFP128
封装: GREEN, PLASTIC, HTQFP-128
文件页数: 62/108页
文件大小: 1395K
代理商: TVP5157PNPR
SLES243E
– JULY 2009 – REVISED MARCH 2011
Table 4-29. Luma ALC Freeze Upper Threshold
Subaddress
26h
Default
00h
7
6
5
4
3
2
1
0
Luma ALC freeze [7:0]
Upper hysteresis threshold for luma ALC freeze function. The lower hysteresis threshold for the ALC freeze function is fixed at 1 count out
of 4096. Setting the upper threshold to 00h (default condition) disables the ALC freeze function.
Table 4-30. Chroma ALC Freeze Upper Threshold
Subaddress
27h
Default
00h
7
6
5
4
3
2
1
0
Chroma ALC freeze [7:0]
Upper hysteresis threshold for chroma ALC freeze function. The lower hysteresis threshold for the ALC freeze function is fixed at 1 count
out of 4096. Setting the upper threshold to 00h (default condition) disables the ALC freeze function. Recommend a setting of 02h or greater
when enabled.
Table 4-31. AGC Increment Speed
Subaddress
29h
Default
06h
7
6
5
4
3
2
1
0
Reserved
AGC increment speed [3:0]
AGC increment speed
Controls the filter coefficient of the first-order, recursive automatic gain control (AGC) algorithm whenever incrementing the gain.
000
0 (fastest)
110
6 (default)
111
7 (slowest)
Table 4-32. AGC Increment Delay
Subaddress
2Ah
Default
1Eh
7
6
5
4
3
2
1
0
AGC increment delay [7:0]
Number of frames to delay gain increments. Also see AGC decrement delay at subaddress 2Ch.
00000000
0
00011110
30 frames (default)
11111111
255 frames
Copyright
2009–2011, Texas Instruments Incorporated
Internal Control Registers
57
Product Folder Link(s): TVP5158 TVP5157 TVP5156
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