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48
Pin No. Pin Name I/O Description
78 ILLIN
I
Auto dimmer control illumination line detection signal input terminal
“H” is input at dimmer detection Not used (fixed at “L”)
79
TELATT I Telephone detection signal input terminal At input of “H”, the signal is attenuated by –20 dB
80 NCO O
Not used (open)
81 TEST IN
I Setting terminal for the test mode “L”: test mode, Normally: fixed at “H”
82 ACC IN
I Accessory detection signal input terminal “L”: accessory on
83 NCO O
Not used (open)
84 LOCKIN
I Mini-disc lock detection signal input from the MD mechanism controller (IC501) “H”: lock
85 RCIN1
I Rotary remote commander shift key input terminal “L”: shift
86 HSTX I
Hardware standby input terminal “L”: hardware standby mode Reset signal input in this set
87 MD2 I
Setting terminal for the CPU operational mode (fixed at “L” in this set)
88 MD1 I
Setting terminal for the CPU operational mode (fixed at “H” in this set)
89 MD0 I
Setting terminal for the CPU operational mode (fixed at “H” in this set)
90 RSTX I
System reset signal input from the reset signal generator (IC652) and reset switch (SW503)
“L”: reset “L” is input for several 100 msec after power on, then it changes to “H”
91 VSS —
Ground terminal
92 X0
I Main system clock input terminal (3.68 MHz)
93 X1
O Main system clock output terminal (3.68 MHz)
94 VCC —
Power supply terminal (+5V)
95 to 97 NCO O
Not used (open)
98 DIM SEL
I Setting terminal for the dimmer “L”: dimmer in, “H”: no dimmer (fixed at “L” in this set)
99 TAP CD
I
Setting terminal for the internal mechanism tape or CD
“L”: CD, “H”: tape (fixed at “L” in this set)
100, 101 NCO O
Not used (open)
102 AMTL IN I
Auto metal detection signal input terminal “L”: auto metal Not used (open)
103 AMS IN I
Input terminal of whether a music is present or not is detected at auto music sensor
“L”: music is present, “H”: music is not present Not used (open)
104 REEL I
Rotation detect signal input terminal Not used (open)
105 POS0 I
106 POS1 I
107 POS2 I
108 POS3 I
109 LM EJ O
Loading motor control signal output terminal “H” active
(For the eject direction and reverse side operation) Not used (open)
110 LM LD O
Loading motor control signal output terminal “H” active
(For the loading direction and forward side operation) Not used (open)
111 CM ON O
Capstan/reel motor control signal output terminal “H”: motor on Not used (open)
112 TAPON O
Tape system power supply on/off control signal output terminal “H”: tape on Not used (open)
113 N ROUT O
Forward/reverse direction control signal output terminal
“L”: forward direction, “H”: reverse direction Not used (open)
114 AMSON O
Tape auto music sensor control signal output terminal
“L” is output to lower the gain for audio level at FF/REW mode Not used (open)
115 MTLON I/O
METAL control in/out terminal
At initial mode: auto/manual mode selection input of METAL function (manual at “L” input)
At manual mode: METAL on/off control signal output terminal (METAL on at “H” output)
Not used this function (open)
116 DOLON I/O
Dolby control in/out terminal
At initial mode: valid/invalid selection input of dolby function (valid at “L” input)
At normal mode: dolby on/off control signal output terminal (dolby on at “H” output)
Not used this function (open)
Tape position (EJECT/FF/REW/REV/
FWD mode) detect input from the tape
operation switch on the deck mechanism
Not used this function (open)
POS0: “L”: EJECT mode, “H”: others mode
POS1: “L”: FF and FWD mode, “H”: others mode
POS2: “L”: REW mode, “H”: others mode
POS3: “L”: REV and EJECT mode, “H”: others mode