Main ic – Toshiba TW40F80 User Manual
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50
5. TERMINAL FUNCTION, DESCRIPTION AND BLOCK DIAGRAM OF
MAIN IC
42
Mode SW
Separate / Composite SW,
AC
C amp., Sub color control
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
3.58 / 4.43
PAL / NTSC
Sync. sepa.
V. filte
r
H. sync det.
H / V count
Clamp
fsc
trap
Separate / composite SW
321H VCO
AFC wave
form det.
Delay
Contrast
control
HD, VD, blanking pulse,
killer output
Y, R-Y, B-Y output
L P F
R-Y, B-
Y
demodulation
APC killer wave form det.
IDENT D det.
PAL / NTSC
matrix
Tint control
Color control
RGB output
3.58MHz / 4.43MHz
VC
XO. PAL SW
Filter
fH Ad
j.
fsc BPF
Y, R-Y, B-Y input clamp
BG
R
Clamp pulse
1M
Ω
0.22
µ
F
1.8 K
Ω
18pF
4.43MHz
3.58MHz
18
pF
0.47
µ
F
6.8K
Ω
4700pF
0.22
µ
F
1M
Ω
1
µ
F
+
+
22
µ
F
0.1
µ
F
+
Separate
/ color
1000pF
Separate / composite SW
Vcc
20k
Ω
0.22
µ
F
20k
Ω
Vcc
Vcc
0.1
µ
F
Contrast
control
0.1
µ
F
Su
b co
lor
control
+
4.7
µ
F
100
Ω
180k
Ω
1500pF
43k
Ω
CVBS
2.2k
Ω
220pF
820pF
500pF
330
Ω
0.015
µ
F
4.7
µ
F
+
8.2k
Ω
2.7k
Ω
50 / 60
0.1
µ
F
22
µ
F
Killer det.
BLK
H
D
V
D
Y
R-Y
B
-Y
Vcc
Vcc
0.22
µ
F
0.22
µ
F
0.22
µ
F
0.1
µ
F
Color control
Tint control
20k
Ω
0.1
µ
F
22
µ
F
+
R-Y B-Y
20k
Ω
+
1.8 K
Ω
+
1
0.1
µ
F
Fig. 6-5 QY01
m
m
m
m
m
PC1832GT internal block diagram