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Pin No. Pin Name I/O Description
79 SCL O
Clock signal output to the EEPROM (IC171)
80 SCTX O
Recording data output enable signal output to the CXD2656R (IC121) and overwrite head
driver (IC181) Writing data transmission timing output (Also serves as the magnetic head on/off
output)
81 CLOCK SET0
I Destination setting terminal (fixed at “L” in this set)
82 CLOCK SET1
I Destination setting terminal (fixed at “H” in this set)
83
LED0 O LED drive signal output terminal Not used (open)
84 LED1 O
LED drive signal output terminal Not used (open)
85, 86 NC
O Not used (open)
87 MODEL SEL0 I
Setting terminal for the model (fixed at “L” in this set)
88 MODEL SEL1 I
Setting terminal for the model (fixed at “L” in this set)
89, 90 NC
O Not used (open)
91
TIMER I
TIMER switch (S751) input terminal (A/D input)
“L”: PLAY, “H”: REC (OFF: center voltage)
92
SOURCE I INPUT switch (S741) input terminal (A/D input)
93
KEY3 I Key input terminal (A/D input) S731 and S732 (TIME, PITCH CONTOROL keys input)
94
KEY2 I
Key input terminal (A/D input) S721 to S726 (§ EJECT, PLAY MODE, REPEAT, SCROLL,
LEVEL/DISPLAY/CHAR, I/u keys input)
95
KEY1 I
Key input terminal (A/D input)
S711 to S714 (MENU/NO, YES, PUSH ENTER, CLEAR keys input)
96 AVSS
— Ground terminal
97
KEY0 I Key input terminal (A/D input) S701 to S706 (REC r , p, ), 0, P, · keys input)
98 VREF I Reference voltage (+3.3V) input terminal (for A/D converter)
99 +3.3V
— Power supply terminal (+3.3V) (for analog system )
100
MONO/ST
I
REC MODE switch (S746) input terminal “L”: MONO, “H”: STEREO