参数资料
型号: TVP5147PFPR
厂商: TEXAS INSTRUMENTS INC
元件分类: 颜色信号转换
英文描述: COLOR SIGNAL DECODER, PQFP80
封装: GREEN, PLASTIC, HTQFP-80
文件页数: 38/100页
文件大小: 1465K
代理商: TVP5147PFPR
Functional Description
35
SLES099C—March 2007
TVP5147PFP
2.11.2
AFE Gain Control Register
Subaddress
01h
Default
0Fh
7
6
5
4
3
2
1
0
Reserved
1
AGC chroma
AGC luma
Bit 3: 1 must be written to this bit.
Bit 2: 1 must be written to this bit.
AGC chroma enable: Controls automatic gain in the chroma/PbPr channel:
0 = Manual (if AGC luma is set to manual, AGC chroma is forced to be in manual)
1 = Enabled auto gain, applied a gain value acquired from the sync channel for S-video and component
mode. When AGC luma is set, this state is valid. (default)
AGC luma enable: Controls automatic gain in the embedded sync channel of CVBS, S-video, component
video:
0 = Manual gain, AFE coarse and fine gain frozen to the previous gain value set by AGC when this bit is set
to 0.
1 = Enabled auto gain applied to only the embedded sync channel (default)
These settings only affect the analog front-end (AFE). The brightness and contrast controls are not affected
by these settings.
2.11.3
Video Standard Register
Subaddress
02h
Default
00h
7
6
5
4
3
2
1
0
Reserved
Video standard [2:0]
Video standard [2:0]:
CVBS and S-Video
Component Video
000
= Autoswitch mode (default)
Autoswitch mode (default)
001
= (M, J) NTSC
Component 525
010
= (B, D, G, H, I, N) PAL
Component 625
011
= (M) PAL
Reserved
100
= (Combination-N) PAL
Reserved
101
= NTSC 4.43
Reserved
110
= SECAM
Reserved
111
= PAL 60
Reserved
With the autoswitch code running, the user can force the decoder to operate in a particular video standard
mode by writing the appropriate value into this register. Changing these bits causes the register settings to
be reinitialized.
NOTE: Sampling rate (either square pixel or ITU-R BT.601) can be set by bit 7 (sampling rate)
in the output formatter 1 register at I2C subaddress 33h (see Section 2.11.28).
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