– 4 –
2-2.
IC PIN FUNCTION DESCRIPTION
CONTROL BOARD IC801 TMP47C103N (INPUT CONTROL, LED DRIVE)
Pin No.
Pin Name
I/O
Function
1
X OUT
O
System clock. (4 MHz)
2
X IN
I
System clock. (4 MHz)
3
RESET
I
RESET input.
4
PMD
I
MODE select input.
5
VOL+
O
Motor drive output (+).
6
VOL –
O
Motor drive output (–).
7
SW0
I
Rotary switch input (CD).
8
SW1
I
Rotary switch input (TUNER).
9
SW2
I
Rotary switch input (PHONO).
10
EON
I
EON signal input.
11
PHONO
O
PHONO LED drive output.
12
TUNER
O
TUNER LED drive output.
13
CD
O
CD LED drive output.
14
GND
–
Ground.
15
AUX
O
AUX LED drive output.
16
DAT
O
TAPE “Z” LED drive output.
17
TAPE
O
TAPE “1” LED drive output.
18
MON
O
MONITOR output.
19
PRY
O
Power relay output.
20
PKY
I
Power key input.
21
MON
I
MONITOR input.
22
SIRCS
I
SIRCS input.
23
MUTE
O
Muting output.
24
SCE
O
Chip enable output.
25
SDT
O
Serial data output.
26
SCK
O
Serial clock output.
27
STOP
I
Stop input.
28
+3 V
–
+3 V power supply.
