AK8851 Datasheet, PDF (2/80 Pages) Asahi Kasei Microsystems – NTSC/PAL/SECAM Digital Video Decoder

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