ak8825 AKM Semiconductor, Inc., ak8825 Datasheet - Page 129
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ak8825
Manufacturer Part Number
ak8825
Description
Hd/sd Multi Format Video Encoder With 3ch Dac
Manufacturer
AKM Semiconductor, Inc.
Datasheet
1.AK8825.pdf
(162 pages)
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HD VBI & Clip Level Control Register (R/W) [Sub Address 0x01]
[Component Video Encoder]
VBI, Clipping level of output is set.
Sub Address 0x01
HD VBI & Clip Level Control Register (R/W) [Sub Address 0x01]
Rev-E-00
bit 0
bit 1
bit 2
bit 3
bit 5
bit 6
bit 7
HDCLPLVL1
BIT
~
~
~
bit 7
0
Register Name
HDVUNMSK
HDCLPLVL0
HDCLPLVL1
Reserved
HDVL0
HDVL1
~
~
HDCLPLVL0
bit 6
0
V-Blank Unmask bit
HD Clamp Level bit
HD VB Setting
Reserved bit
Reserved
bit 5
0
Reserved
R/W
R/W
R/W
R/W
R/W
bit 4
0
Default Value
Adjust VBI blanking lines.
Final lines of the blanking period are adjusted. Values are relative
number of the default line (line 20).
[HDVL1:HDVL0]-bit
01:increased by 1 line
00: default
11: decreased by 1 line.
10: decreased by 2 lines.
Sets the masking action during V-Blanking periods.
0 : during V-Blanking outputs are masked. ( Black is outputs )
1: normal operation. (Input data is output during V-Blanking
720P : 6 - 24(+/-VL[1:0]) lien
Reserved, write 0x00
Define clipping level of the over sampling filter.
[HDCLPLVL1:HDCLPLVL0] =
00:no clipping
01: clips at about -7.0 IRE below pedestal level.
10: clips at about -1.5 IRE below pedestal level.
11:Reserved
129
Following lines are in the interest.
525i : 10 - 20(+/-VL[1:0]) and
525P :
1080i :
periods.)
Reserved
bit 3
0
273- 283(+/-VL[1:0]) Line
13 - 42(+/-VL[1:0]) Line
7 - 20(+/-VL[1:0]) line and
569 - 583(+/-VL[1:0]) line
HDVUNMSK
bit 2
1
Definition
HDVL1
bit 1
0
default Value 0x04
HDVL0
bit 0
2008/03
0
[AK8825]
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