-5-
IC Block Diagrams
IC201 < IF/Video/Chroma/Def. > LA76818
1
DC
VO
L
SW
FM
DET
2
3
4
56
IF
AG
C
RF
AG
C
VIF
7
8
9
10
IF
VCC 5V
11
12
13
BU
S
PEAKING
CORING
BLA
CK
STRETCH
SYNC
SEP
14
15
ABL
DC
REST
CLAMP
OSD
CONTRAST
BRIGHT
16
17
18
19
20
CONTRAST
BRIGHT
RGB
MA
TRIX
OSD
SW
DRIVE/OUT
-OFF
VCC
21
22
23
FSC/
SYNC SW
24
25
26
27
VER
RAMP
HOR
VCC
H
VCC
VER
C/D
HOR
OUT
PHASE
SHIFTER
AFC2
AFC1
VER
SEP
HOR
C/D
1/256
COLOR
CLAMP
LPF
ALC
+
SW
CLAMP
DEMO
PA
L
SW
AC
C
BPF
ON/OFF
DELA
Y
LINE
SW
TRAP
AFT
VIDEO
DET
TRAP
LIM
AMP
BPF
SPLL
BPF
VIDEO
AMP
IF
IDENT
VIDEO
SW
APC1
TINT
VXO
DDS
APC2
DC ADS
.
CLAMP
VCO
1H DELA
Y
HOR
VCO
FBP
28
29
30
31
32
1H
VCC
33
34
35
36
37
38
39
40
41
42
CLMP
43
44
45
CLMP
V/C VCC
5V
46
47
48
49
50
A2C
PLL
51
52
53
54
Audio Output
FM Output/Selected
Audio Output
PIF AGC
RF AGC Output
PIF Input1
PIF Input 2
IF Ground
IF Vcc
FM Filter
AFT Output
Bus Data
Bus Clock
ABL
Red Input
Green Input
Blue Input
Fast Blanking Input
RGB Vcc
Red Output
Green Output
Blue Output
fsc output or C
Sync output
Vertical Output
Ramp ALC Filter
Horizontal/BUS Vcc
Horizontal Output
Horizontal AFC Filter
Flyback Pulse Input
VCO IREF
Clock (4MHz) Outupt
CCD Vcc
CCD Filter
CCD/Horizontal Ground
SECAM B-Y Input
(Cb Input)
SECAM R-Y Input
(Cr Input)
Chroma APC2 Filter
Clamp Filter
4.43 MHz Crystal
Chroma APC1 Filter
Selected Video Output
Video/Vertical/BUS Ground
External Video Input(Y-IN)
Video/Vertical Vcc
Internal Video Input (S-C IN)
Black Level Detector
Video Output
VCO Filter
VCO Coil 2
VCO Coil 1
APC Filter
Ext. Audio Input
SIF Output
SIF APC Filter
SIF Input
