參數(shù)資料
型號： ADV7189
廠商： Analog Devices, Inc.
英文描述： Multiformat SDTV Video Decoder
中文描述： 標清多格式視頻解碼器
文件頁數(shù)： 82/104頁
文件大?。?/td> 890K
代理商： ADV7189
ADV7189
Table 189. Register 0x2D to 0x30
Subaddress
Register
0x2D
Chroma
Gain
Control 1
Rev. A | Page 82 of 104
Bit Description
CMG[11:8]
. Chroma manual
gain can be used to program a
desired manual chroma gain.
Reading back from this register
in AGC mode gives the current
gain.
Reserved.
Bit
4
Comments
CAGC[1:0] settings
decide in which
mode CMG[11:0]
operates.
Notes
7
6
5
3
2
1
0
0
1
0
0
1
1
Set to 1.
Has an effect only if
CAGC[1:0] is set to
auto gain (10).
Slow (TC = 2 s).
Medium (TC = 1 s).
Fast (TC = 0.2 s).
Adaptive.
CMG[11:0] = 750d;
gain is 1 in NTSC
CMG[11:0] = 741d;
gain is 1 in PAL.
LAGC[1:0] settings
decide in which
mode LMG[11:0]
operates.
Set to 1.
Only has an effect if
AGC[1:0] is set to
auto gain (001, 010,
011,or 100).
Slow (TC = 2 s).
Medium (TC = 1 s).
Fast (TC = 0.2 s).
Adaptive
LMG[11:0] =
1234dec; gain is 1 in
NTSC LMG[11:0] =
1266dec; gain is 1 in
PAL.
0
0
1
1
0
1
0
1
CAGT[1:0]
. Chroma automatic
gain timing allows adjustment of
the chroma AGC tracking speed.
Min value is 0dec
(G = –60 dB)
Max value is 3750
(Gain = 5).
0x2E
Chroma
Gain
Control 2
CMG[7:0]
. Chroma manual gain
lower 8 bits. See CMG[11:8] for
description.
0
0
0
0
0
0
0
0
LMG[11:8]
. Luma manual gain
can be used program a desired
manual chroma gain, or to read
back the actual gain value used.
1
1
x
x
x
x
Reserved.
0
0
1
1
0
1
0
1
Min value
NTSC 1024 (G = 0.85)
PAL (G = 0.81).
Max value
NTSC 2468 (G = 2),
PAL = 2532 (G = 2).
0x2F
Luma Gain
Control 1
LAGT[1:0]
. Luma automatic gain
timing allows adjustment of the
luma AGC tracking speed.
0x30
Luma Gain
Control 2
LMG[7:0]
. Luma manual gain
can be used to program a
desired manual chroma gain or
read back the actual used gain
value.
x
x
x
x
x
x
x
x
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相關代理商/技術參數(shù)
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