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5-15. IC PIN FUNCTION DESCRIPTION
• IC501 CXP83620-023Q (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
1
C-SCOR
I
CD SCOR input
2
RMC
I
RMC input terminal
3
MUTE
O
Mute
4
ADJ
O
f tex divided-by-16 frequency output terminal
5
C-SCLK
I/O
CD SENS read-out clock
6
C-SENS
I/O
CD SENS input
7
C-SQCK
I/O
CD SUBQ read-out clock
8
C-SQSO
I/O
CD SUBQ data IN
9
C-XRST
I/O
CD SYSTEM reset
10
C-CLOCK
I/O
CD SYSTEM clock
11
C-LATCH
I/O
CD SYSTEM latch
12
C-DATA
I/O
CD COMMAND OUT
13
C-AGCCONT
I/O
CD AGCCONT output
14
R-COUNT
I/O
Radio data IN
15
R-CLOCK
I/O
Radio clock
16
R-DATA
I/O
Radio data
17
R-LATCH
I/O
Radio latch
18
V-LATCH
I/O
VCL IC latch
19
V-DATA
I/O
VOL IC data
20
V-CLOCK
I/O
VOL IC clock
21
P-CON
I/O
Power control
22
REG CHK
I/O
Power supply monitoring port
23
REC
I/O
REC input terminal
24
SDA
I/O
EEPROM
25
KEY-1
I/O
Key input terminal
26
KEY-2
I/O
Key input terminal
27
KEY-3
I/O
Key input terminal
28
LIGHT CONT
I/O
PDW light control output
29
MODE CHECK
I/O
SET specification read-out terminal
30
RST
I
RST terminal
31
EXTAL
I
External 4 MHz is connected to this terminal (input)
32
XTAL
—
External 4 MHz is connected to this terminal
33
V
—
Ground
SS
34
VL
O
LCD bias control
35 – 37
VLC 3 – 1
O
LCD bias power supply
38 – 41
COM 0 – 3
—
LCD common output
42 – 59
SEG 0 – 17
—
LCD common output
60
NC
O
Not connected
61
NC
O
Not connected
62
INIT
O
Terminal for initial setting
63
WOOFER2
O
PDW2. gain control terminal
64
WOOFER1
O
PDW1. gain control terminal
65
VM
O
Center voltage read-out terminal
66
VH
O
Supply voltage read-out terminal
67
ISS-1
O
ISS1
68
ISS-2
O
ISS2
69
TAPE
O
Tape function output
70
RADIO
O
Radio function output
Description
— 43 —
Pin No.
Pin Name
I/O
71
CD
O
CD function output
72
V
—
Power supply
DD
73
TX
—
External 150 kHz oscillator is connected to this terminal
74
TEX
I
External 150 kHz oscillator is connected to this terminal (Input)
75
NC
—
Not connected
76
A-MUTE
O
Audio mute output terminal
77
SCL
O
Clock output EEPROM
78
EC
I
Event counter input
79
TC-PLAY
I
TC-play input
80
C-DOOR
I
Open/close of CD lid.
Description
— 44 —
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