ak8825 AKM Semiconductor, Inc., ak8825 Datasheet - Page 5

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

1-2. NTSC/PAL Composite Video Encoder Block
1-3 High Speed Video DAC mode
Rev-E-00
This Block described as Composite Video Encoder Block in this datasheet.
AK8825 can be used as High Speed Video DAC. This mode is described as Video DAC mode in this datasheet.
Generator
Clock Gen
DATA[17:0]
Timing
Cb[7:0]
From
Cr[7:0]
CLKIN
Y[7:0
From
From
HDI
VDI
13.5MHz
27MHz
SD-Timing
4:2:2 to 4:4:4
Generator
Interpolation
Distributor
Data
6.75MHz
LPF-A
x2
DATA[17:12] / DATA[15:11]
DATA[11:6] / DATA[10:5]
Fig. 3 Composite Video Encoder Block
DATA[5:0] / DATA[4:0]
Fig. 4 High Speed Video ADC Block
LPF-B
13.5MHz
CGMS-A
WSS
U
V
cos
5
DFS
Generator
Shifter
Level
SYNC
sin
C
LPF-C
(unit CLK)
x2
Delay
Delay
Delay
sin(x)/x
sin(x)/x
sin(x)/x
27MHz
DAC1
DAC2
DAC3
HDO
VDO
Y[9:0]
to DAC
CVBS[9:0]
to DAC
C[9:0]
to DAC
2008/03
[AK8825]