5-1. IC PIN DESCRIPTION
• IC801 CXP83516-601Q (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
C-SCOR/R-CNT
I
CD SCOR input
2
RMC
I
Sircs receiver input
3
CD
O
CD function output
4
C-MUT
O
CD block mute output
5
C-SEN1
I
CD SENSE-1 input
6
C-SEN2
I
CD SENSE-2 input
7
C-SQCK
O
CD Sub-Q read clock output
8
C-SQSO
I
CD Sub-Q data input
9
C-RST
O
CD reset output
10
C-CLK
O
CD serial clock output
11
C-LAT
O
CD serial latch output
12
C-DATA
O
CD serial data output
13
PCON
O
System power control output
14
RADIO
O
LED (RADIO BAND) drive signal output/Tuner switch
15
TAPE
O
LED (TAPE) drive signal output/Tape switch
16
DUB.
O
LED (TAPE) drive signal output/Dubbing switch
17
CLUB
O
LED (CLUB) drive signal output
18
JAZZ
O
LED (JAZZ) drive signal output
19
POP
O
LED (POP) drive signal output
20
ROCK
O
LED (ROCK) drive signal output
21
MANUAL
O
LED (MANUAL) drive signal output
22
TC1
I
Deck A tape play switch input
23
TC2
I
Deck B tape play switch input
24 – 27
KEY-1 – 4
I
Key input
28
VERSION
I
Tuner destination band select input
29
INT/SFT-CLK
O
Shift clock output
30
RST
I
System reset input
31
EXTL
I
Oscillation input (4.19 MHz)
32
XTAL
O
Oscillation output (4.19 MHz)
33
VSS
—
GND
34
VL
O
LCD drive port ON/OFF output
35 – 37
VLC-3 – 1
O
LCD drive voltage terminal
38 – 41
COM0 – 3
O
LCD drive common output
42 – 64
SEG0 – 22
O
LCD drive segment output
65
VL2
O
LCD Bias control output
66
B-MUTE
O
Tuner mute signal output
67
R-LATCH
O
Tuner latch output
68
R-CLK
O
Tuner clock output
69
V-DATA/R-DATA
I
Tuner data input
70
V-LATCH
O
Graphic equalizer latch output
71
V-CLOCK
O
Graphic equalizer clock output
72
VDD
—
Power supply pin (+5 V)
73
TX
O
Oscillation output (32.768 kHz)
74
TXE
I
Oscillation input (32.768 kHz)
75
NC
—
Not used.
76
BL-CONT
O
LCD back light control signal
77
A-MUT
O
Audio mute output
78
REC
I
Tape record signal input
79
C-DOR
I
CD door open/close switch input
80
REGCK
I
Regulator check
SECTION 5
DIAGRAMS
5-2. CIRCUIT BOARDS LOCATION
LAMP board
CD MOTOR board
CD board
MAIN board
KEY board
CONTROL board
BATTERY board
POWER board
BACK UP board
RECORD/PLAYBACK
SWITCH board
– 15 –
– 16 –
