Microcomputer's Terminal Description - Kenwood KDC-3022 Service Manual

KDC-3022,322,5023/R,5024/V/Y/YV,507,5094RY

MICROCOMPUTER'S TERMINAL DESCRIPTION

IC1: ELECTRIC UNIT (X25-9580-xx/2232-xx)
Pin No. Name I/O
1-5 N.C
6 REMO
7 N.C
8 BYTE
9 CNVSS
10 XCIN
11 XCOUT O
12 RESET
13 XOUT O
14 VSS
15 XIN
16 VCC
17 NMI
18 EJECT
19 R-CLK
20 LX-REQ S
21 ILL CON O
22 PANEL 5V O
23 VOL A
24 VOL B
25 LOE/LIM SW
26 BEEP O
27 M STOP O
28 MOSW O
29 PLL-CLK O
30 PLL-DATA I/0
31 LX-DATA M O
32 LX-DATA S
33 LX-CLK I/O
34 LX-REQ M O
35 L DATAS O
36 L DATAL
37 L CLK O
38 FLIP-DET
39 L CE O
40 LO/LE I/O
41 EPM
42 M RST O
43 M-MUTE R
44 12EJE SW
45 M-MUTE L
46 LX-CON O
47 LO.S SW
48 DSI
49 PANEL DET
50 N.C
- Open
I Remote control signal input terminal
- Open
I EXT. bus width select input terminal (GND)
- Pull down to GND
I Sub clock input terminal (32.768KHz)
Sub clock output terminal (32.768KHz)
I Reset terminal (Active : L )
Main clock output terminal (10MHz)
- GND
I Main clock input terminal (10MHz)
- Power supply input terminal (BU 5V)
- Pull up to BU5V
I Eject detection terminal (Active L)
I RDS decoder clock input terminal
I EXT. unit request signal input terminal (Request L)
Illumination control terminal
Control for Panel5V AVR (Active L)
I Volume key input terminal
I Volume key input terminal
I CD mechanism down sw detect input terminal (Disc clamp : H)
Beep audio signal output terminal
Request signal (Mechanism is STOP) output to CD mechanism (active L)
CD mechanism motor control output terminal (Loading, eject ,brake : H)
System clock put to Front-end
Data input / out put to Front-end
EXT. unit Data output to EXT.unit
I EXT. unit Data input from EXT.unit
EXT.unit Clock input/output terminal
EXT unit Request output terminal (Request L)
DATA output terminal to LCD driver IC
I DATA input terminal from LCD driver IC
CLK output terminal to LCD driver IC
I Panel assy open detect terminal (panel close : L )
CE output for LCD driver IC
CD mechanism loading / eject control terminal
I Flash memory control terminal (pull down to GND, 100K)
Reset signal output to CD mechanism (active L)
I Request to muting signal(R ch) from Mechanism ( Mute on : L )
I 12cm CD disc eject SW detection input terminal (12cm disc : L )
I Request to muting signal (L ch) from Mechanism ( Mute on : L )
EXT.unit select control terminal (Active H)
I Loading start SW detection input terminal (Loading start : L )
I Disc guide illumination control terminal (Lighting on : L)
I Panel assy detect terminal (Panel assy come off : L)
- Open
Description/Processing Operation
5