Microcomputer's Terminal Description - Kenwood CX-401W Service Manual

CX-401W/WCVH2

MICROCOMPUTER'S TERMINAL DESCRIPTION

System Microcomputer 703035AYGC-J01 (X14- : IC11)
Terminal description
Pin No. Pin Name
1 NC
2 CD CLK
3 NC
4 EV DATA
5 EV CLK
6 VDD
7 VSS
8 CD MOTOR
9 CD STOP
10 CD RST
11 CD SW3
12 LCD DI
13 LCD DO
14 LCD CLK
15 BEEP
16 CD SW2
17 CD SW1
18 IC/Vpp
19 CD LO/EJ
20 CD MUTE
21 NC
22 NC
23 BUS DI
24 BUS DO
25 SVR
26 P ANT
27 NC
28 P STBY
29 P MUTE
30 SYS ON
31 RESET
32 XT1
33 XT2
34 REGC
35 X2
36 X1
37 VSS
38 VDD
39 NC
40 PON D
41 PON A
42 NC
43 NC
44 NC
45 NC
46 NC
47 ILL IN
48 LAMP ON
49 SRV
50 NC
51 NC
4
I/O Description
O Not used
O CD clock
O Not used
O E-VOL data
O E-VOL clock
- 5V potential
- GND
O CD SW for motor driver
O CD stop
O CD reset
I CD SW3 detection
I LCD driver data input
O LCD driver data output
O LCD driver clock
O Beep output
I CD SW2 detection
I CD SW1 detection
- Writing voltage
O CD loading/Eject control
I CD mute
O Not used
O Not used
I IEBUS data input
O IEBUS data output
O For SVR discharge
O Power antenna control
O Not used
O Power AMP stanby control
O Power AMP mute control
O System control
I System reset input
I Sub system clock connection terminal
- Sub system clock connection terminal
I Regulator connection terminal
- Main system clock connection terminal 6.29MHz
I Main system clock connection terminal 6.29MHz
- GND
- 5V potential
O Not used
O Power ON (Digital)
O Power ON (Analog)
O Not used
O Not used
O Not used
O Not used
O Not used
I Key illumination input
O LCD back light control
O CD servo power conrol
O Not used
O Not used
Processing Operation
Input select 1:AM/ 2:FM/ 3:CD/ 4:BUS
Motor ON: "H" / Motor OFF: "L"
Stop: "L"
Reset: "L"
SW ON: "H" / SW OFF: "H"
SW ON: "L" / SW OFF "H"
SW ON: "L" / SW OFF "H"
Eject: "L" / loading: "H"
Mute ON: "L" / Mute OFF: "H"
SVR discharge: "H"
Tuner ON: "H" / others: "L"
Power IC ON: "H" / Power IC OFF: "L"
Mute ON: "L" / Mute OFF: "H"
ACC ON: "H" / ACC OFF: "L"
Reset: "L"
32.768kHz
32.768kHz
ACC ON: "H" / ACC OFF: "L"
ACC ON, Power ON : "H" / ACC OFF: "L"
Illum ON: "L" / Illum OFF: "H"
ACC ON, Power ON : "H" / others: "L"
CD ON: "H" / CD OFF: "L"