EVAL-ADV7181BEB Analog Devices Inc, EVAL-ADV7181BEB Datasheet - Page 78
EVAL-ADV7181BEB
Manufacturer Part Number
EVAL-ADV7181BEB
Description
BOARD EVALUATION FOR ADV7181
Manufacturer
Analog Devices Inc
Type
Video Decoderr
Datasheet
1.ADV7181BCP.pdf
(100 pages)
Specifications of EVAL-ADV7181BEB
Contents
Evaluation Board
For Use With/related Products
ADV7181
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
- Current page: 78 of 100
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ADV7181B
Subaddress
0x27
0x2B
0x2C
Register
Pixel Delay
Control
Misc Gain
Control
AGC Mode
Control
Bit Description
LTA[1:0]. Luma timing adjust allows
the user to specify a timing difference
between chroma and luma samples.
Reserved.
CTA[2:0]. Chroma timing adjust
allows a specified timing difference
between the luma and chroma
samples.
AUTO_PDC_EN. Automatically
programs the LTA/CTA values so
that luma and chroma are aligned at
the output for all modes of
operation.
SWPC. Allows the Cr and Cb samples
to be swapped.
PW_UPD. Peak white update
determines the rate of gain.
Reserved.
CKE. Color kill enable allows the
color kill function to be switched on
and off.
Reserved.
CAGC[1:0]. Chroma automatic gain
control selects the basic mode of
operation for the AGC in the chroma
path.
Reserved.
LAGC[2:0]. Luma automatic gain
control selects the mode of
operation for the gain control in the
luma path.
Reserved.
Rev. B | Page 78 of 100
7 6
0
1
1
1
0
1
0
1
0
0
0
0
1
1
1
1
5
0
0
0
0
1
1
1
1
1
0
0
1
1
0
0
1
1
4 3
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
0 0
0
1
0
1
0
1
0
1
Bits
1
2
0
0
1
1
0
1
1
1
0
0
0
1
1
0
0
0
0
1
0
1
0
1
0
1
Comments
No delay
Luma 1 clk (37 ns) delayed
Luma 2 clk (74 ns) early
Luma 1 clk (37 ns) early
Set to 0
Not valid setting
Chroma +2 pixels (early)
Chroma +1 pixel (early)
No delay
Chroma -1 pixel (late)
Chroma -2 pixels (late)
Chroma -3 pixels (late)
Not valid setting
Use values in LTA[1:0] and
CTA[2:0] for delaying
luma/chroma
LTA and CTA values
determined automatically
No swapping
Swap the Cr and Cb O/P
samples
Update once per video
line
Update once per field
Set to default
Color kill disabled
Color kill enabled
Set to default
Manual fixed gain
Use luma gain for chroma
Automatic gain
Freeze chroma gain
Set to 1
Manual fixed gain
Peak white algorithm off
Peak white algorithm onl
AGC no override through
peak white; automatic IRE
control
AGC auto-override through
peak white; automatic IRE
control
AGC active video with
peak white
AGC active video with
average video
Freeze gain
Set to 1
Notes
CVBS mode
LTA[1:0] = 00b;
S-Video mode
LTA[1:0]= 01b,
YPrPb mode
LTA[1:0] = 01b.
CVBS mode
CTA[2:0] = 011b.
S-Video mode
CTA[2:0] = 101b.
YPrPb mode
CTA[2:0] = 110b.
See
Swap_CR_CB_WB,
Addr 0x89.
Peak white must be
enabled. See
LAGC[2:0].
For SECAM color kill,
threshold is set at
8%.
See CKILLTHR[2:0].
Use CMG[11:0].
Based on color
burst.
Use LMG[11:0].
Blank level to sync
tip.
Blank level to sync
tip.
Blank level to sync
tip.
Blank level to sync
tip.
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