ak8825 AKM Semiconductor, Inc., ak8825 Datasheet - Page 3

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

1. Block Diagram
Rev-E-00
DATA[17:0]
CLKIN
HDI
VDI
27MHz or 74.25MHz
PVDD1
18-bit
PVDD2
74.25MHz-> 148.5MHz
27MHz -> 54MHz
Clock Gen
PLL
YCbCr to RGB
RGB to YCbCr
DVDD DVSS
YCbCr
RGB
Fig. 1 Block Diagram
6.75/13.5/27/54/148.5MHz
3
AVDD AVSS
Delay
Delay
Cb/B
Cr/R
Y/G
Cb
Cr
G
R
Y
B
PDN SDA SCL
Composite Video
Component
NTSC/PAL
Encoder
Encoder
Delay
u-P I/F
VREF
CVBS
SELA
Cb/B
Cr/R
Y/G
G
Y
C
B
R
IREF BYPASS
VREF
Buffer
Buffer
TMO
TEST
DAC1
DAC2
DAC3
FLT
2008/03
[AK8825]
TEST0
TEST1
HDY/SDY/G
HDPb/SDC/B
HDPr/CVBS/R
HDO
VDO