Pin No.
Pin Name
I/O
Description
1 ~ 3
COM1 ~ COM3
O
LCD common output.
4 ~ 22
SEG1 ~ SEG19
O
LCD segment output.
23
SEG20 (KR3)
O
LCD segment/ key matrix timing output.
24~26
KR2~KR0
O
Key matrix timing output.
27~30
K0~K3
I
Key matrix input.
31
MOT ON
O
Motor drive control terminal. H : ON, L : OFF.
32
MOT HI
O
Motor speed control terminal. H : HI, L : LO.
33
MOT DIR
O
Motor rotate direction control terminal. H : Counterclockwise, L : Clockwise.
34
BRAKE
O
Motor brake control terminal. H : ON, L : OFF.
35
LOAD CTL
O
Battery remain voltage check signal output terminal. H : ON.
36
AM OUT
O
FM/ AM control terminal. H : AM, L : FM.
37
F/R CTL
O
FWD/ REV control terminal.H : FWD, L : REV.
38
MOT CH
I
Motor rotate detection terminal (Connected to ground).
39
TIMING SW
I
Mecha status detection switch input terminal.
40
P-SNSR
I
Photosensor signal input terminal.
41
C-SW
I
Cassette tape detection switch input terminal. L : Exist cassette tape.
42
L.V. STOP
I
Reduction voltage detect signal input terminal. L : Reduce.
43
REMOTE
I
Remote controller key input terminal.
44
EJECT SW
I
Cassette tape eject SW input terminal. L : Eject.
45
HOLD
I
Key hold switch input terminal (main unit side). H : Hold.
46
BUZR
O
Buzzer output terminal.
47
POWER MUTE
O
Mute signal output terminal. H : ON, L : OFF.
48
TEST
I
Test mode control input terminal (Connected to ground).
49
WAKE
I
Backup detection signal input terminal.
50
IF IN
I
IF counter input terminal.
51
TU OUT
O
TU operation control terminal. H : TU OFF, L : TU ON.
52
PLL OUT
O
Phase Comparator output terminal.
53
GND
-
Connected to ground.
54
FM IN
I
FM programmable counter input terminal.
55
AM IN
I
AM programmble counter input terminal.
56
VDD
-
Voltage supply.
57
RESET
I
System reset signal input terminal.
58
X OUT
I/O
Connected to crystal oscillator.
59
X IN
I/O
Connected to crystal oscillator.
60
VXT
-
Power supply for crystal oscillator.
61
VLCD
-
Reference voltage for LCD driver.
62,63
C1,C2
-
Double boost up voltage for LCD driver.
64
VEE
-
Constant 1.5V for LCD driver.
IC, TC9318FB-049
IC DESCRIPTION
ADJUSTMENT <TUNER/DECK>
VR101
TC201
TP1 (VT)
L202
SFR 401
IFT201
L201 BAR ANT
J101
6
3
8
5
6
2
2
4
1
7
L203
7
8
MAIN C.B
A
19
20
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