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TA1276AFG
2002-04-01
3
Block Diagram
Pin 41 connect to V
CC
: Double Scan mode
Note 1: [ ]: for Double Scan mode only (external clamping pulse input mode)
Registor
D/A
Convert
H parabola
Phase Det
<AFC-2>
HD out/
BPP in
(Ext. VBLK)
H BLK
Delay Line
Sub Color
H Phase
Shift
32f
H
VCO
V Sep
H.V.
Sync Sep.
V Count
Down
Mode
SW
f
sc
Trap
SW
ACC Amp
TOF
SW
ACC Det
P/N
Ident Det
Filter Auto
Adj.
Chroma
Demond.
Delay Line
Color Sys
Ident
H Count
Down
Delay Line
TOF
LPF f
sc
Trap
CW
Matrix
Sharpness
Control
γ
Correction
DC Restore
Black Level
Cor
Y Clamp
Black
Stretch
Tint
Uni-color
Half Tone
Uni-color
Clamp
Sub Cont
Y NR Amp
Chroma BLK
4.43 MHz
X’tal
Chroma GND
f
sc
Out
SCP Out
SECAM
Control
Y
1
Out
U/Q Out
V/I Out
1H DL
Control
M PAL X’tal
3.58 MHz
X’tal
APC Filter
V
CC1
(5 V)
Chroma In
Y
1
/Sync In
V-Sep.
HD Out
Sync. Out
DEF GND
AFC Filter
32f
H
VCO
DEF
V
CC
(9 V)
H. Out
[SW]
Curve Adjust
[Ext CP/
BPP In]
FBP In
[H/V BLK In]
Digital GND
SDA
SCL
Sharpness
Delay Line
SRT
R Out
G Out
B Out
100 IRE
=
2.3 V
p-p
I
2
C Bus
Decoder
H Drive
Phase Det
<AFC-1>
SECAM
Control
SW
f
sc
out
Chroma
VCO
APC Det
1 H DL
Control
SCP out
Sync out
Color
Axis G-Y
Matrix
Clamp
Half Tone
Color
γ
Delay Line
SW
IQ
→
UV
Convert
Flesh Color
IQ/UV
Clamp
Black Peak
Det
APL Det
VSM
Mute
VSM Amp
HPF
DL SW
BLK
Clamp
Drive
RGB out
Y
M
SW
IK
R. G. B. S/H
OSD Amp
Ys SW
RGB
γ
SW
SW
Clamp
ACL
ABCL Amp
RGB
Matrix
WPS
Internal Clamp Mode
or
External Clamp Mode
Contrast
Clamp
RGB
Bright
V Sync Sep
VP out
Ys SW
Cutoff
Cutoff
G S/H
B S/H
Hi Bright
Color
CDE
IK
Cutoff
Cutoff
R S/H
Sense In
R S/H
Color Limiter
Y
2
In
U/Q In
V/I In
Black Peak Hold
APL Det.
VSM Out
Y
M
In
ABCL In
Text GND 2
Text GND 1
V
CC2
(9 V)
Analog OSD
R In
Analog R In
Analog G In
Analog B In
VP Out
G S/H
B S/H
V
CC3
(9 V)
Analog OSD
G In
Analog OSD
B In
Ys1
(analog OSD)
Ys2
(analog OSD)
Color Peak
Det
Cutoff
72
38
40
41
34
35
37
46
47
49
42
43
45
54
57
58
50
52
53
63
64
65
59
61
62
67
69
70
73
25
24
22
31
29
27
18
17
15
21
20
19
9
8
7
13
11
10
2
1
80
6
5
3
78
76
74
32