46
IC901 3842
VCC
GND
O/P
Ct/Rt
Is
COMP.
F.B
Vref
8
2
1
3
4
6
5
7
U.V.L.O.
36V
1V
1/2 Vref
OSCILLATOR
LATCH
PWM
S
R
COMP
C.S.
1/3
AMP
ERR
LOGLC
RESET
SET/
Vref
5V
BIAS
INTERNAL
SCL
SDA
Vref Rext
Vcc
GND
Analog
B Video
G Video
R Video
Select
OSD
B OSD
G OSD
R OSD
DAC 4
DAC 3
DAC 2
DAC 1
GND
Digital
B OUT
G OUT
R OUT
Vref OUT
ABL
Clamp
H Flyback
IC801 LM1269
To Other Video Channels
2
I C Interface
Blocks with "
To internal
Registers
Vref
Vref
Offset
DC DACs
13
14
15
16
17
18
19
20
21
22
23
24
Buffer Amp
Output
Gain
Mixer
OSD
Limit Amp
Auto Beam
Buffer Amp
Hi Z Input
12
11
10
9
8
7
6
5
4
3
2
1
H Blank
Restore Amp
Clamp DC
R
R
R
R
Contrast
Contrast
OSD
Digital
Analog/
R
R