AK8851 View Datasheet(PDF) - Asahi Kasei Microdevices

Part Name

Description

Manufacturer

AK8851

NTSC/PAL/SECAM Digital Video Decoder

Asahi Kasei Microdevices 

ASAHI KASEI

[AK8851]

1.Functional Block Diagram

CLK

SELA SDA SCL /RESET

IRef R1

CLOCK

Module

Microprocessor I/F

Register

Phase Error

27MHz

Timing

Contorller

&

VCO Controller

EX TCL P

AIN1

AIN2

AIN3

AIN4

AIN5

AIN6

CLPCA P1

CLPCA P2

Analog Process

- Analog Multiplexer

- Clamp

- PGA

- Sync-Separation

- AGC Info.

- Closed Caption

- VBID,WSS

- WSS

Y

CVBS

Y

10-bit

ADC

C 10-bit

ADC

Decimation

Filter

C

13.5MHz

Luma- Processing

Y/C

Y

Separation

2D-3Line

or

1D-BPF

- Brightness Ctrl

- Contrast Ctrl

- Sharpness Ctrl

C

Chroma- Processing

DFS

&

Chroma PLL

- Demodulation

- ACC

- HUE Ctrl

- Saturation Ctrl

VREF

AVDD AVSS VRP VCOM VRN VREF IRefR2

/PD

MS0244-E-03

2

Confidential

NSIG

CLK27MO

HALFCKO

/DVALID

VSYNC

HSYNC

CSYNC

FIELD

Output Processing

Y

- Pixel Interpolator

- VBI Slicer

- Rec.656 formatter

- 656 Output Buffer

U

D[7:0]

EXTDAT[7:0]

V

TEST

DVDD DVSS

2005/07

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