Pioneer VSX-56TXi Service Manual page 169

5
TA1270BF (VIDEO CONVERT ASSY : IC3514)
• PAL/NTSC Video Chroma and Sync Processing System for PIP/POP/PAP
Pin Arrangement (Top view)
Block Diagram
38 37
DAC2
Y OFFSET
SW
39
DAC1 DAC1
PEDESTAL
Y IN 40
CLAMP
41
DAC Vcc
Y DL
(5V)
42
C Vcc
(5V)
43
UV/CbCr SW
fsc OUT 44 fsc
1H DL
45
1HDL CONT
CONTROL
SECAM
SECAM CONT 46
CONTROL
B-Y/Cb OUT 47
Cb/Cr/UV
SW
48
R-Y/Cr OUT
VCXO
1 2
5
6
38
39
48
1
TH = 0.7V
HI ; 1IN / LOW ; 2IN
36 35 34 33
2
DAC I C BUS
TEST CONTROL
SUB-
Y DL
CONTRAST
SW
fsc
TRAP
SYSTEM
CW
MATRIX
P/N ID
LPF/fsc
TRAP
SW
BPF
TOF
APC
SUB
ACC
COLOR
3 4 5 6
6
7
25
14
32 31 30 29 28
PEDESTAL
Ys
CLAMP
OFFSET
SW
YUV -> RGB
MATRIX
TINT
DEMO
CHROMA NOSE
BLK DET
V
H. AFC
SEP
SYNC
SEP
7 8 9 10 11
VSX-56TXi
7
8
24
15
27 26 25
PEDESTAL
CLAMP
24
HI ; 2ch / LOW ; 24h
23
22
21
SW
SW
20
19
18
CP/HP
17
IN
16
H C/D V C/D
15
SCP
32fH
VCO
12 13 14
8
A
B
C
SW GND
ADRS SW
R-Y/R OUT
D
B-Y/B OUT
Y/G OUT
SW Vcc
(9V)
SYNC Vcc
(9V)
CP/HP IN
E
Dig GND
SCP OUT
F
169