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Block Diagram
IC203 (TDA4685)
Hue control
voltage
A
—
A45.A40, Aee.Aeo, AS5 Am
A
-lJ5xc3J-----------------------"---
-
. . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ,
N35AEQ,A15.A10,A25.A20, A3?.A20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
c
4
Leakage
and
; BREN
VFB
Sandcastle
pulse
;
NMEN
I
d
wEF+-
1
-(R-Y)+
EN!EDEl
';"'
-1111-
I
.—
m
S UPPLY
G2
-I
JI
-------
12Cbusdata
and
VFI=8V
control signals
C* anem
A
Block Diagram
El
+
IC301 (C)(AI 420P)
,Im:
%&f'
E
't input
S/M
+r
x
L
A
Al
T
6
b
"----
,
CONTROL
A
CHROMA DELAY
C DELAY
m.'
,
"
:
-'"'/
ONJOFF
12C BUS IF
REGULATOR
IR EF
AIT
DELAY
AMP
y
;
125315
23
24
4
6
.n --
!H-
PLUSE
SHAPE
7
8
)Y-output
SDA SCLJVCC
J
+-
Cinpu'
c
output
Blanking
Clamp
pulse/
Digital
Analogue
pulse
ground
sand
castle pu Ise
ground
Tx
–5–
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