ak8825 AKM Semiconductor, Inc., ak8825 Datasheet - Page 52

• 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 (1080i/720P)
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
X2 Over-sampling Filter for Y-data
x4 Over-sampling Filter for Cb/Cr
Rev-E-00
Sub Address 0x0A
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
-10
-20
-30
-40
-50
-60
10
10
bit 7
0
0
0
0
0
00
01
10
11
Fig. 47 x2 Over-sampling filter for 1080i/720p
Fig. 48 x4 Over-sampling filter for 1080i/720p
5 10 15 20 25 30 35 40 45 50 55 60 65 70
5
Reserved
bit 6
10
0
Filter Mode
MODE0
MODE1
MODE2
MODE3
Frequency[MHz]
Frequency[MHz]
15
STD770_2C
bit 5
21
0
26
HDCEA805B
bit 4
31
0
Note
Default Value
36
52
CCWSSSUE
bit 3
0
-1
-2
-3
-4
-5
3
2
1
0
0
Reserved
bit 2
Fig. 46 Aperture Filter
0
10
Aperteu Filter
Frequency[MHz]
HDAFLT1
20
bit 1
0
default Value 0x00
MODE3
MODE2
30
MODE1
MODE0
HDAFLT0
bit 0
2008/03
[AK8825]
0
40