Microcomputer's Terminal Description - Kenwood KRC-309S Service Manual

KRC-309S/389/389W,409/479,489/489G
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MICROCOMPUTER'S TERMINAL DESCRIPTION

(X14-) IC1 : µ-COM
PORT
PORT NAME
No.
1 X IN
2 GND
3 L-DATA L
4 L-DATA S
5 L-CLK
6 L-CE
7 PANEL
8 PLL-DATA
9 PLL-CLK
10 SD
11 CH-DATA C
12 CH-DATA H
13 CH-CLK
14 CH-REQ C
15 MOTOR
16-20 -
21 CH-CON
TE
L 13942296513
22 CH-REQ H
23 MUTE
24 IC2-SCL
25,26 -
27 IC2 TYPE 0
28 -
29 TYPE 1
30 TYPE 0
31 VDD
32 IC2-SDA
33 SW 5V
34 P-MUTE
35 P-STBY
36 SVR
37 EN1
38 EN3-1
39 EN3-0
40 EN2-1
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4
I/O FUNCTION
I Clock : 4.5MHz.
- GND.
I LCD driver data.
O LCD driver data.
O LCD driver clock.
O LCD driver chip enable.
I Panel detection.
I/O Tuner data.
O Tuner clock.
I Tuner band muting.
I 5-line CD-CH communication data.
O 5-line CD-CH communication data.
I/O 5-line CD-CH communication clock.
I 5-line CD-CH communication request.
O Cassette mechanism main motor.
- -
O 5-line CD-CH communication control.
O 5-line CD-CH communication request.
O Muting.
O IC2 clock.
- -
I Model discrimination.
- -
I destination discrimination.
I destination discrimination.
- Power supply.
I/O IC2 data.
O SW 5V control.
O Power IC muting.
O Power IC stand-by.
O Power IC discharge control.
O Power supply IC contol.
O Power supply IC contol.
O Power supply IC contol.
O Power supply IC contol.
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OPERATING CONDITION
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