AK8850 Datasheet, PDF (2/99 Pages) Asahi Kasei Microsystems – NTSC Digital Video Decoder

ASAHI KASEI
1. Functional Block Diagram
IVCXO CLK
CLKINV
[AK8850]
LLPF
LLPFC
FLPF
FLPFC
IRefR1
EXTCLP
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
SYNC1
SYNC2
SYNC3
FBCAP1
FBCAP2
FBCAP3
CLPCAP1
CLPCAP2
CLOCK
Module
Analog Multiplexer
Clamp
PGA
Sync Separator
Phase Error
27MHz
Sync-Separatio
n
&
AGC Info.
&
Closed Caption
VBID
Extraction
Composite
Y
10-bit
ADC
Timing
Contorller
&
VCO Controller
&
Registers
Y/C
Y
Separation
(2D-3Line
or
1D-BPF)
Luma-
Processing
&
Image Ctrl
(Brightness,
Contrast etc.)
U
C /U
10-bit
ADC
V
10-bit
ADC
Decimation
Filter
V
Chroma-
U
Processing
&
C
ACC
V
13.5MHz
DFS
(Chroma
PLL)
&
Image Ctrl
(HUE,Saturation)
VREF
Microprocessor I/F
1-1. SignalAPVaDthD ( CAoVmSSpos^Vit^Re^PVi^Vd^Ce^Oo^Msig^Vn^Ra^Nl in^Vp^Ru^Et )^{F IRefR2}
SELA SDA SCL /RESET
PD
Output Processing
(Level Shifter
&
Rec.656 formatter
etc.)
with Buffer
DVDD DVSS
Rev.0
2
NSTD
NSIG
CLK27MOUT
HALFCLKOUT
DVALID/VLOCK
VSYNC
HSYNC
FIELD
FRAME0
FRAME1/CSYNC
D[7:0]
2002/01