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ADV7181BST Datasheet(PDF) 75 Page - Analog Devices

Part # ADV7181BST
Description  Multiformat SDTV Video Decoder
PDF  96 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADV7181BST Datasheet(HTML) 75 Page - Analog Devices

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ADV7181B
Rev. 0 | Page 75 of 96
Bits
Subaddress
Register
Bit Description
7
6
5
4
3
210
Comments
Notes
Reserved
0
x
x
x
x
Set to default
0
0
Slow (TC = 1 s)
0
1
Medium (TC = 0.5 s)
1
0
Fast (TC = 0.1 s)
DCT[1:0]. Digital clamp timing
determines the time constant of the
digital fine clamp circuitry.
1
1
TC dependent on video
0x15
Digital
Clamp
Control 1
Reserved
0
Set to default
0
0
0
0
0
Auto wide notch for poor
quality sources or wide-
band filter with Comb for
good quality input
0x17
0
0
0
0
1
Auto narrow notch for
poor quality sources or
wideband filter with comb
for good quality input
Decoder selects
optimum Y shaping
filter depending on
CVBS quality.
0
0
0
1
0
SVHS 1
Shaping
Filter
Control
0
0
0
1
1
SVHS 2
0
0
1
0
0
SVHS 3
0
0
1
0
1
SVHS 4
0
0
1
1
0
SVHS 5
0
0
1
1
1
SVHS 6
0
1
0
0
0
SVHS 7
0
1
0
0
1
SVHS 8
0
1
0
1
0
SVHS 9
0
1
0
1
1
SVHS 10
0
1
1
0
0
SVHS 11
0
1
1
0
1
SVHS 12
0
1
1
1
0
SVHS 13
0
1
1
1
1
SVHS 14
1
0
0
0
0
SVHS 15
1
0
0
0
1
SVHS 16
1
0
0
1
0
SVHS 17
1
0
0
1
1
SVHS 18 (CCIR601)
1
0
1
0
0
PAL NN1
1
0
1
0
1
PAL NN2
1
0
1
1
0
PAL NN3
1
0
1
1
1
PAL WN 1
1
1
0
0
0
PAL WN 2
1
1
0
0
1
NTSC NN1
1
1
0
1
0
NTSC NN2
1
1
0
1
1
NTSC NN3
1
1
1
0
0
NTSC WN1
1
1
1
0
1
NTSC WN2
1
1
1
1
0
NTSC WN3
YSFM[4:0]. Selects Y Shaping Filter
mode when in CVBS only mode.
Allows the user to select a wide
range of low-pass and notch filters.
If either auto mode is selected, the
decoder selects the optimum Y filter
depending on the CVBS video
source quality (good vs. bad).
1
1
1
1
1
Reserved
If one of these
modes is selected,.
the decoder does
not change filter
modes. Depending
on video quality, a
fixed filter response
(the one selected) is
used for good and
bad quality video.
0
0
0
Auto selection 15. MHz
0
0
1
Auto selection 2.17 MHz
Automatically
selects a C filter
based on video
standard and
quality.
0
1
0
SH1
0
1
1
SH2
1
0
0
SH3
1
0
1
SH4
1
1
0
SH5
CSFM[2:0].
C Shaping Filter mode allows the
selection from a range of low-pass
chrominance filters.
If either auto mode is selected, the
decoder selects the optimum C filter
depending on the CVBS video
source quality (good vs. bad). Non-
auto settings force a C filter for all
standards and quality of CVBS video.
1
1
1
Wideband mode
Selects a C filter for
all video standards
and for good and
bad video.



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