– 20 –
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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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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