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6-6. IC PIN DESCRIPTION
• IC702 TB2004FN-020 (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
GND
—
GND
2
OSC
—
For system clock generation (fosc=3.2 kHz)
3
CL
I
RESET input
4
IN1
I
Pause ON/OFF by PAUSE SW and VOR. “L” : ON, “H” : OFF
5
IN2
I
FWD reset by cassette cover open-close. “L” : ON, “H” : OFF
6
IN3
I
Direction “L” : ON, “H” : OFF
7
IN4
I
REC/PB switch “L” : REC, “H” : PB
8
IN5
I
FF/REW “L” : ON, “H” : OFF
9
IN6
I
POWER ON/OFF “L” : ON, “H” : OFF
10
IN7
I
Photo reflector pulse input for tape end detection.
11
IN8
I
FWD/REV switch “L” : FWD, “H” : REV
12
I/O1
—
Not used.
13
I/O2
—
Not used.
14
OUT8
—
Not used.
15
OUT7
—
Not used.
16
OUT6
—
Not used.
17
OUT5
O
LED ON/OFF “L” : ON, “H” : OFF
18
OUT4
O
Audio mute “L” : ON, “H” : OFF
19
OUT3
O
Motor brake “L” : ON, “H” : OFF
20
OUT2
O
Motor direction “L” : FWD, “H” : REV
21
OUT1
O
Motor ON/OFF “L” : ON, “H” : OFF
22
VDD
—
Power supply for CMOS.
23
CONT
O
Boosting circuit control output
24
VCC
—
Power supply for bipolar.
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