AK8826 Datasheet, PDF (106/157 Pages) Asahi Kasei Microsystems – HD/SD Multi Format Video Encoder with 3ch DAC

■ Video Signal Filter
[AK8826VN]
(1) Luminance Filter
Luminance Filter of Composite Video Encoder can be selectable by register setting. Register-bit for filter setting is SD Block
FLT Register(R/W) SDYLFT[1:0]-bit.
SD Block FLT Register
Sub Address 0x14
bit 7
bit 6
Reserved
Reserved
bit 5
Reserved
bit 4
SDYFLT1
bit 3
SDYFLT0
bit 2
Reserved
default Value 0x00
bit 1
bit 0
Reserved
Reserved
SDYFLT [1:0] -bit
00
01
10
Selected Filter
YFLT0
YFLT1
YFLT2
ç
Characteristics of each filter are shown as Fig. 152.
10
Note
Default
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
-10
-20
Y FLT1
Y FLT2
-30
Y FLT0
-40
-50
-60
Frequency[MHz]
ç
Fig. 151 LPF-A
MS0972-E-01
106
2008/12