ak8825 AKM Semiconductor, Inc., ak8825 Datasheet - Page 50

• Manufacturer Part Number: ak8825
• Description: Hd/sd Multi Format Video Encoder With 3ch Dac
• Manufacturer: AKM Semiconductor, Inc.

Over-sampling filter with aperture-effect compensation for Luminance (525P/625P)
Compensation degree can be set with this register-bit. “Mode 0” is less compensation and “Mode 3” is more compensation.
HD Block Miscellaneous Control Register
Sub Address 0x0A
x2 Over-sampling Filter for Y-data
x4 Over-sampling Filter for Cb/Cr
Rev-E-00
AK8825 equips the aperture-effect compensation filter for Luminance Signal.
This filter can be set with HDAFT[1:0]-bit of HD Block Miscellaneous Control Register [Sub Address 0x0A] .
HDAFLT[1:0]-bit
Reserved
-10
-20
-30
-40
-50
-60
bit 7
-10
-20
-30
-40
-50
-60
10
10
0
0
0
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0
00
01
10
11
0
Fig. 43 x2 Over-sampling filter for 525p/625p
Fig. 44 x4 Over-sampling filter for 525p/625p
2
4
Reserved
6
bit 6
0
Filter mode
8
MODE0
MODE1
MODE2
MODE3
10 12 14 16 18 20 22 24 26
Frequency[MHz]
Frequency[MHz]
STD770_2C
bit 5
0
less
more
HDCEA805B
bit 4
0
Note
Default Value
50
CCWSSSUE
bit 3
0
-1
-2
-3
-4
-5
3
2
1
0
0
Reserved
bit 2
Fig. 42 Aperture Filter
0
Aperteu Filter
5
Frequency[MHz]
HDAFLT1
bit 1
0
default Value 0x00
10
MODE3
MODE2
HDAFLT0
MODE1
MODE0
bit 0
2008/03
[AK8825]
0