AK8825 데이터 시트보기 (PDF) - Asahi Kasei Microdevices

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AK8825

HD/SD Multi Format Video Encoder with 3ch DAC

Asahi Kasei Microdevices 

1. Block Diagram

PDN SDA SCL SELA

CLKIN

27MHz or 74.25MHz

Clock Gen

PLL

74.25MHz-> 148.5MHz

27MHz -> 54MHz 6.75/13.5/27/54/148.5MHz

u-P I/F

DATA[17:0]

18-bit

HDI

VDI

YCbCr

YCbCr to RGB

RGB to YCbCr

RGB

Y

Y

Cb NTSC/PAL C

Composite Video

Cr

Encoder CVBS

Y/G

Cb/B

Cr/R

G

B

R

Component

Encoder

Delay

Y/G

Cb/B

Cr/R

G

B

R

TMO

[AK8825]

TEST

TEST0

TEST1

DAC1

DAC2

DAC3

HDY/SDY/G

HDPb/SDC/B

HDPr/CVBS/R

Delay

Delay

Buffer

Buffer

VREF

HDO

VDO

PVDD1

PVDD2

DVDD DVSS AVDD AVSS

Fig. 1 Block Diagram

VREF IREF BYPASS FLT

Rev-E-00

3

2008/03

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