Kenwood DPX-3070, Service Manual

Page: 4 / 38

DPX-3070/3070B
4
●
MAIN
µ
-COM : MN101C49KWG (MAIN UNIT : IC1)
Pin No.
Active
Pin Name I/O Application Processing Operation
(H/L)
1 VREF- -
µ
-com reference voltage (–)
2 REEL S I Cassette mechanism reel rotation detection
3 REEL T I Cassette mechanism reel rotation detection
4 DC ERR I Power IC offset voltage observation
5 LINE MUTE I Line mute detection
6 H ACC DET I ACC power supply detection H : ACC OFF
7 L ILLUMI DET I Dimmer illumination detection L : ILUMMI ON
8 JS1 I Destination setting 3
9 CD MECHA SEL I CD mechanism selection terminal
H : MP3 CD mechanism
L : NORMAL CD mechanism
10 VREF+ -
µ
-com reference voltage (+)
11 VDD - Power supply for
µ
-com
12 OSC2 - Main clock output
13 OSC1 - Main clock input
14 VSS - GND for
µ
-com
15 XI - Sub clock input
16 XO - Sub clock output
17 MMOD - Memory mode setting
18 LX DATA M O Data to slave unit
19 LX DATA S I Data from slave unit
20 LX CLK I/O LX BUS clock
21 L MODE1 I Cassette mechanism condition detection SW1 H : Normal condition, L : Reset
22 L MODE2 I Cassette mechanism condition detection SW2
23 MODE3 I Cassette mechanism condition detection SW3
24 PWIC BEEP O Beep output
25 NC -
26 BU DET I Momentary power down detection L : Normal condition, H : Momentary power down
27 LX REQ S I Communication request from slave unit
28 REMO I Remote control signal input Pulse width detection
29 L DATA IN I Data input from LCD driver
30, 31 NC -
32 VDD2 - Power supply for
µ
-com
33 NRST -
µ
-com reset terminal L : Reset
34 LCD BLIGHT R O LCD back light control (Red) PWM control
35 NC -
36 LCD BLIGHT B O LCD back light control (Blue) PWM control
37 NC -
38 L INH O Turns off LCD display
MICROCOMPUTER’S TERMINAL DESCRIPTION
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