AK8850 Datasheet, PDF (43/99 Pages) Asahi Kasei Microsystems – NTSC Digital Video Decoder

ASAHI KASEI
7-3 DIGITAL SIGNAL PROCESSING BLOCK DIAGRAM
7-3-1 Digital Block Details
CLK13.5MHz
CLK27MHz
Composite
or
Y[9:0]
10-bitAD
Y/C
C[9:0]
Component
Cb[9:0]
10-bitAD
Component
Cr[9:0]
10-bitAD
PGA_GAIN[6:0] x 3
INPUT_SEL
CLAMP1_LEV[1:0]
CLAMP_PULSE_SEL
CLK_Mode Select
RESET
Y
Composite
Signal
Adaptive
YC-Separation
Sync Rejection
Contrast
Brightness
C
ACC
C
ACC
Timing Controller & Other Function
Sync Detect
Sync Separation
VCO Control (Phase error Detect)
AGC Control
CC/VBID/WSS/ASPECT Extraction
etc.
Demodulation
Multiplier
LPF
Multiplier
LPF
Chroma PLL
(HUE Control)
DFS
Rev.0
DVDD DVSS
43
[AK8850]
U
V
HALFCLKOUT
CLK27MOUT
Y
HSYNC
Y
Y
U
Cb
VSYNC
FIELD
FRAME0
FRAME1
DVALID
U
V
Cr
V
DATA[7:0]
Host Interface
SELA SCL SDA /RESET
NSTD
NSIG
2002/01