ak8823 AKM Semiconductor, Inc., ak8823 Datasheet - Page 61

• Manufacturer Part Number: ak8823
• Description: Hdtv & Ntsc/pal Multi-format Encoder Sdtv/hdtv X2 Oversampling 5ch Dacs
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Reserved Register (R/W) [Address 0x01]
Register to set VBI and Output Clipping values.
Sub Address 0x01
MS0549-E-02
CLPLVL_HD1
bit 0
bit 1
bit 2
bit 3
bit 4
bit 5
bit 6
bit 7
BIT
~
~
~
bit 7
0
Register Name
CLPLVL_HD0
CLPLVL_HD1
VUNMSK
Reserved
CC_DIS
VL0
VL1
~
-
CLPLVL_HD0
< HD Block >
bit 6
0
VB setting
V-Blank Un Mask
bit
Closed Caption
Disable
Reserved
Clip Level bit
Reserved
bit 5
0
R/W
R/W
R/W
R/W
R/W
Reserved
bit 4
Default Value
0
to set Vertical Blanking Interval.
The last Line during the Vertical blanking Interval can be
changed, which is referenced to the initial value ( 20 Lines ).
[ VL1 : VL0 ] – bits
01 : one line longer
00 : initial value
11 : one line shorter
10 : two lines shorter
to set whether input data during V-Blank interval is masked or
not.
0 : masked during V-Blank Interval ( Black level is output ).
1 : un-masked during V-Blank Interval
( input data is output even during V-Blank Interval ).
Un-masked interval is set as follows, depending on the selected
mode.
525i : 10 ~ 20 ( +/_ VL [ 1 : 0 ] ) Lines & 273 ~ 283
525p : 13 ~ 42 ( +/_ VL [ 1 : 0 ] ) Lines
1080i : 7 ~ 20 ( +/_ VL [ 1 : 0 ] ) Lines & 569 ~ 583
750p : 6 ~ 24 ( +/_ VL [ 1 : 0 ] ) Lines
Closed Caption Data Encoding is forced to stop.
0 : in 525i / 625i mode operation, data which is set at SD side is
encoded.
1 : in 525i / 625i mode operation, data is not encoded on the
Component outputs even if data encoding is set at SD side.
write “ 0 “
The under-shoot part of the Over-Sampling Filter Output is
clipped to a pre-set value.
00 : no clipping
01 : to be clipped at approximately – 7.0 IRE
10 : to be clipped at approximately – 1.5 IRE
11 : reserved
61
( +/- VL [ 1 : 0 ] ) Lines
( +/- VL [ 1 : 0 ] ) Lines
CC_DIS
bit 3
0
VUNMASK
bit 2
Definition
1
bit 1
VL1
0
Default Value 0x04
bit 0
VL0
2006/10
[AK8823]
0