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參數資料
| 型號： | ADV7181B |
| 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： | 78/96頁 |
| 文件大?。?/td> | 873K |
| 代理商： | ADV7181B |
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ADV7181B
Rev. 0 | Page 78 of 96
Bits
4
Subaddress
0x2D
Register
Chroma
Gain
Control 1
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
CAGT[1:0]. Chroma automatic gain
timing allows adjustment of the
chroma AGC tracking speed.
7
6
5
3
0
2
1
1
0
0
0
Comments
Notes
CAGC[1:0] settings
decide in which
mode CMG[11:0]
operates
0
0
1
1
0
0
1
0
1
0
1
0
1
0
0
0
0
0
Set to 1
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
Has an effect only if
CAGC[1:0] is set to
auto gain (10)
0x2E
Chroma
Gain
Control 2
CMG[7:0]. Chroma manual gain
lower 8 bits. See CMG[11:8] for
description.
Min value is 0dec
(G = –60 dB)
Max value is 3750
(Gain = 5)
LMG[11:8]. Luma manual gain can
be used program a desired manual
chroma gain, or to read back the
actual gain value used.
Reserved
LAGT[1:0]. Luma automatic gain
timing allows adjustment of the
luma AGC tracking speed.
x
x
x
x
0
0
1
1
x
0
1
0
1
x
1
x
1
x
x
x
x
x
Set to 1
Slow (TC = 2 s)
Medium (TC = 1 s)
Fast (TC = 0.2 s)
Adaptive
LMG[11:0] = 1234d; gain is
1 in NTSC LMG[11:0] =
1266d; gain is 1 in PAL
Only has an effect if
LAGC[1:0] is set to
auto gain (001, 010,
011,or 100)
0x2F
Luma Gain
Control 1
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.
Min value
NTSC 1024 (G = 0.85)
PAL (G = 0.81)
Max value
NTSC 2468 (G = 2),
PAL = 2532 (G = 2)
HSE = Hsync end
HSB = Hsync begin
0x31
Reserved
HVSTIM. Selects where within a line
of video the VS signal is asserted.
0
0
1
0
1
0
Set to default
Start of line relative to HSE
Start of line relative to HSB
EAV/SAV codes generated
to suit ADI encoders
Manual VS/Field position
controlled by registers
0x32, 0x33, and 0xE5–0xEA
Set to default
Set to default
VS goes high in the middle
of the line (even field)
VS changes state at the
start of the line (even field)
VS goes high in the middle
of the line (odd field)
VS changes state at the
start of the line (odd field)
Set to default
VS goes low in the middle
of the line (even field)
VS changes state at the
start of the line (even
field)
VS goes low in the middle
of the line (odd field)
VS changes state at the
start of the line odd field
NEWAVMODE. Sets the EAV/SAV
mode.
1
0x32
VS and
FIELD
Control 1
Reserved
Reserved
VSBHE
0
0
0
0
0
0
0
0
0
1
NEWAVMODE bit
must be set high.
1
VSBHO
0
VSync
Field
Control 2
1
Reserved
VSEHE
0
0
0
0
1
0
0
NEWAVMODE bit
must be set high.
1
0
0x33
VSync
Field
Control 3
VSEHO
1
相關PDF資料 |
PDF描述 |
|---|---|
| ADV7181BBCPZ | Multiformat SDTV Video Decoder |
| ADV7181BBSTZ | Multiformat SDTV Video Decoder |
| ADV7181BCP | Multiformat SDTV Video Decoder |
| ADV7181BST | Multiformat SDTV Video Decoder |
| ADV7183B | Multiformat SDTV Video Decoder |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ADV7181BBCPZ | 制造商:Analog Devices 功能描述:Video Decoder 3ADC 9-Bit 64-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述:ADV718XB DECODER FAMILY UPDATES - Bulk 制造商:Analog Devices 功能描述:IC VIDEO ENCODER |
| ADV7181BBSTZ | 制造商:Analog Devices 功能描述:Video Decoder 3ADC 9-Bit 64-Pin LQFP 制造商:Analog Devices 功能描述:IC VIDEO ENCODER |
| ADV7181BCP | 制造商:Analog Devices 功能描述:Video Decoder 3ADC 9-Bit 64-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述:10BIT NTSC/PAL/SECAM VIDEO DECODER I.C. - Bulk |
| ADV7181BCPZ | 制造商:Analog Devices 功能描述: |
| ADV7181BST | 制造商:Analog Devices 功能描述:Video Decoder 3ADC 9-Bit 64-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:9-BIT BIT NTSC/PAL/SECAM VIDEO DECODER - Bulk 制造商:Analog Devices 功能描述:IC VIDEO ENCODER |
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