Microcomputer's Terminal Description - Kenwood CX-402A Service Manual

MICROCOMPUTER'S TERMINAL DESCRIPTION

(X14-) IC11 : µ-COM
PORT
PORT NAME
No.
1 -
2 CD CLK
3 -
4 EV DATA
5 EV CLK
6 VDD
7 GND
8 P STBY
9 BEEP
10 P MUTE
11 -
12 LCD DI
13 LCD DO
14 LCD CLK
15 LCD CE
16,17 -
18 IC/VDD
19 H-MUTE
20 ACC DET
21 BU DET
22 -
23 BUS DI
24 BUS DO
25 SYS ON
26 P ANT
27 P-ON D
28 P-ON A
29,30 -
31 RESET
32 XT1
33 XT2
34 REGC
35 X2
36 X1
37 GND
38 VDD
39-46 -
47 ILL DET
48 LCD BL
49 DIMMER
50 KEY ILLUMI
51 LED IND
52 EJECT
53 ENC DOWN
54 ENC UP
55 VDD
I/O FUNCTION
- -
O CD clock.
- -
O E-volume data.
O E-volume clock.
- VDD.
- GND.
O Power amplifier stand-by control.
O Beep.
O Power amplifier mute control.
- -
I LCD driver data.
O LCD driver data.
O LCD driver clock.
O LCD driver chip enable.
- -
- Writing voltage.
I Handle mute.
I ACC detection.
I Back-up detection.
- -
I IE BUS data.
O IE BUS data.
O System control.
O Power antenna control.
O Power-on control (Digital).
O Power-on control (Analogue).
- -
- System reset.
- Sub system clock.
- Sub system clock.
-
- Main system clock.
- Main system clock.
- GND.
- VDD.
- -
I "SMALL" detection.
O LCD back light control.
O Dimmer control.
O Key illumination control.
O LED indicator.
I Disc eject key.
I Encode down.
I Encode up.
- VDD.
CX-402A/402R/402W
OPERATING CONDITION
"L" : Power amplifier does not work.
"H" : Power amplifier works.
"L" : Mute on.
"L" : Mute on.
"L" : ACC on.
"L" : Back-up on.
"H" : ACC on.
"L" : ACC on.
"H" : ACC/POWER/SVR on.
"L" : ACC/POWER off.
"L" : Reset.
"L" : "SMALL" detection.
"H" : ACC/POWER on.
"H" : Dimmer on.
"H" : Key illumination turns on.
The indicator turns on and off every 2
seconds during ACC off.
The indicator turns on during disc in.
"L" : Disc eject.
"H" : Mute off.
"H" : Mute off.
"H" : ACC off.
"H" : Back-up off.
"L" : ACC off.
"H" : ACC off.
"L" : Other.
"L" : Base.
"H" : Other.
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