9
KDC-348U/4751SD/BT41U/BT648U
/U4549/U4549SD/U549BT/X395/X695
Pin No.
Pin Name
I/O
Application
Truth Value
Table
Processing / Operation / Description
120
X2
O
High frequency resonator connection
Main clock: 12MHz
121
DVCC3
-
Power supply
122
DVSS/REGVSS
-
GND
123
USB D+
I/O USB data connection
124
USB D-
I/O USB data connection
125
NM IN
I
Non-maskabe interrupt
126
TEST1
-
For test
Output L
fi
xed
127
TEST2
-
For test
Output L
fi
xed
128,129 NC
-
Not used
Output L
fi
xed
130
AVCC3
-
Power supply
131
SA IN
I
Input data for spectrum analyzer
132
AUD DC ERR
I
DC offset detection
133
NC
-
Not used
134
LINE MUTE
I
Line mute detection
TEL mute: Below 1V (Model without BT func-
tion), NAVI mute: Over 2.5V
135~138 NC
-
Not used
139
TYPE 1
I
Destination switching
140
TYPE 2
I
Destination switching
141,142 NC
-
Not used
143
SERIAL DET
I
For serial number writing
144
NC
-
Not used
Truth value table
q
CD motor control
CD MOTOR (Pin 45)
CD LOEJ (Pin 30)
CD BRAKE (Pin 29)
Standby
L
L
L
Eject
H
H
L
Load
H
L
L
Brake
H
H/L
H
w
Power supply IC control SEL1 (Pin No.10 of IC1)
PS1-2 (Pin 58)
PS1-3 (Pin 59)
PS2-1 (Pin 60)
ILLUMI
P-CON
P-ANT
L
L
L
OFF
OFF
OFF
L
L
H
ON
OFF
OFF
H
L
H
ON
ON
OFF
H
H
H
ON
ON
ON
w
Power supply IC control SEL1 (Pin No.11 of IC1)
PS1-1 (Pin 57)
AUDIO/SW5/AM
L
OFF
H
ON
H
ON
MICROCOMPUTER’S TERMINAL DESCRIPTION
