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[C BLOCK DIAGRAM
& DESCRIPTION
. .
ICI LA1826A(Tuner
System)
FM
s
METER
F?4&
FM RF
FM
RF
F$&E
MPX
~M%I$
OEtt&iIt%fl
MPX
R-CH
INPUT
OUTPUT
OTC
L-CH
8:C
Vco
OUTPUT
OUTPUT
INPUT
OUTPUT
OUTPUT
,.
'
,.
AM RF
FM MIX
AU MIX
vREG
FM IF
AM/ FM
AM IF
Atd I FM
PJL=~
INPUT
OUTPUT
OUTPUT
PyHASE
INPUT
IFJNMDPX INPUT
IF{:PX
#T
?~D
,.
.' .,
'.,. . . . .
IC2 TA2068(Pre-An%plifier
for Tape-Deck)
.. ..
..
..
IC4 LC6543F(Micro-Processor)
IC3 TA8227P
(Main(Power)-Amplifier)
Vcc 2
Vcc1
t
@
@
1
"m''"
THERMAL SHUT OOWN
PROTECTIONCIRCUIT
No~
Name
11/01
Description
1
DRF
I
1/0 I RF signal detect
2
VDD
-
I GND
3
SQOUT
1/0 I
Interface for LC7822
4
COIN
1/0
Interface for LC7822
5
CQCK
1/0
Interface for LC7822
6
WRQ
1/0
Interface for LC7822
No.
Name
IJO
Description
16
Oscl
I
Clock input
17
TEST
1
Vss
18
Vss
-
GND
19
RESET
I
Reset
)
20
SEG-A
1/0
Light up Signal for
LED
(Segment a)
21
SEG-B
1/0
Light up Signal for LED (Segment b)
22
SEG-C
1/0
Light up Signal for LED (Segment c)
1
23
SEG-D
1/0
Light up Signal for LED (Segment d)
24
SEG-E
1/0
Light up Signal for LED (Segment e)
25
SEG-F
1/0
Light up Signal for LED (Segment f)
11
I
PUIN
I 1/0 \PU-lN
switch
12 I LID-SW
I 1/0 [ Lid open switch
\
13
D-MUTE
1/0
Mute control
14
KEY-IN
1/0
Key Input
15
OSC2
o
Clock output
.
26
SEG-G
1/0
Light up Signal for LED (Segment g)
I
27
SEG-H
1/0
Light up Signal for LED (Segment h)
28
DIGIT-1
1/0
Common Signal for LED
1
29
DIGIT-2
1/0 I Common Signal for LED
30
PROG
1/0 I Program LED
-12-
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