Sanyo PLV-WF10 Service Manual page 61

CXA2019AQ
ACC
CVBS/Y IN -- 32
VIDEO
SW
C IN -- 34
SCL -- 36
IIC BUS
DECODER
SDA -- 37
V-SYNC
V SYNC -- 38
SEP.
H-SYNC
H SYNC -- 39
SEP.
FF-
Description;
* The CXA2019AQ is a bipolar IC which integrates the luminance signal processing, chroma signal
processing, and sync signal processing functions for NTSC/PAL system color TVs onto a single
chip.
40 pin QFP (Plastic)
NTSC/PAL Chroma Decoder
PAL-N or PAL
Crystal
PAL-M
Oscillator
NTSC
28 27 26
4.43/3.58
SW
CHROMA PHASE
VCO SHIFT
BST PHASE DEM
AMP. DET. AXIS
SUB SHARP- AUTO
CONT. NESS PEDESTAL
PHASE
DET.
2
AFC
Features;
* Sub picture bright and white balance can be adjusted by using the main
picture Y/C/J BGP output as the timing pulse.
* IIC BUS compatible; two bus lines (SCL, SDA) allow various adjust-
ments and user controls.
* Countdown system eliminates need for H and V oscillator frequency
adjustment.
* Non-adjusting Y system filters (chroma trap, delay line).
* Automatic identification of color system (forced control possible).
* Automatic identification of 50/60Hz vertical frequency (forced control
possible).
-61-
- (B-Y) OUT
- (R-Y) OUT
- (B-Y) IN
- (R-Y) IN
24 23 22 21
20
CHROMA DET.
DET. SW
19
Y-DRIVE 18
15
14
13
DRIVE 12
11
6 7 8
Y2 OUTPUT
U2 OUTPUT
V2 OUTPUT
FF-
TO DELY LINE
FROM DELY LINE
-- V OUTPUT
-- U OUTPUT
-- Y OUTPUT
-- H TIMING
PULSE OUT
-- V TIMING
PULSE OUT
-- V2 INPUT
-- U2 INPUT
-- Y2 INPUT