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3 7 6 3 1 5 1 5 0
IC BLOCK DIAGRAMS AND DESCRIPTIONS
TA1270BF(PAL/NTSC Video Chroma and Sync.
Processing system for PIP/POP/PAP)
DAC2
DAC1
39
Y IN
40
DAC Vcc
41
(5V)
C Vcc
42
T E
(5V)
L 1 3 9 4 2 2 9 6 5 1 3
UV/CbCr SW
43
fsc OUT
44
1HDL CONT
45
SECAM CONT
46
B-Y/Cb OUT
47
R-Y/Cr OUT
48
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38
37
36
35
34
Y OFFSET
DAC
SW
TEST
CONTROL
DAC1
SUB-
Y DL
CONTRAST
PEDESTAL
CLAMP
SW
fsc
Y DL
TRAP
SYSTEM
fsc
1H DL
CONTROL
SECAM
LPF/fsc
CONTROL
TRAP
CbCr/UV
BPF
SW
APC
VCXO
SUB
COLOR
1
2
3
4
5
x
a o
y
i
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8
33
32
31
30
29
2
I C BUS
PEDESTAL
Ys
CLAMP
OFFSET
SW
Q Q
3
7
6
YUV
3
RGB
MATRIX
CW
TINT
MATRIX
DEMO
P/N ID
NOSE
CHROMA
BLK
DET
SW
V
H. AFC
TOF
SEP
SYNC
ACC
SEP
6
7
8
9
10
u 1 6 3
.
2
4
9
9
8
28
27
26
25
PEDESTAL
CLAMP
HI:2CH/LOW:24h
SW
1
5
1
5
0
8
9
2
4
SW
CP/HP
IN
H C/D
V C/D
SCP
32fH
VCO
11
12
13
14
m
c o
DTR-6.4
2
9
9
24
SW GND
ADRS SW
23
R-Y/R OUT
22
21
B-Y/B OUT
9
8
2
9
9
20
Y/G OUT
SW Vcc
19
(9V)
SYNC Vcc
18
(9V)
CP/HP IN
17
16
Dig GND
SCP OUT
15
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