Microcomputer's Terminal Description - Kenwood KRC-2902YA Service Manual

KRC-2902YA/G

MICROCOMPUTER'S TERMINAL DESCRIPTION

µ-COM (IC1 : X14-)
Pin No. Pin name
1 PANEL
2 L CE
3 L RES
4 AVSS
5 R DATA
6 R QUAL
7 AVREF 1
8 I C2 SEL 1
9 I C2 SEL 0
10 -
11 L DATA L
12 L DATA S
13 L CLK
14,15 -
16 DATA C
17 DATA H
18 CH CLK
19-26 -
27 MOTOR
28 FF/REW
29-31 -
32 SD
33 VSS 1
34 -
35 PLL CLK
36 PLL DATA
37 AM +A
38 FM +B
39 IC2 DATA
40 IC2 CLK
41 AFC
42 MUTE
43 AMP MUTE
44 -
45 CH CNT
46 REQ H
47 -
48 SVR
4
I/O Description
I Panel detection.
O LCD driver chip enable.
O LCD driver reset.
- GND.
I RDS data.
I RDS receiving.
- Reference voltage.
I Selector.
I Selector.
- -
I LCD driver communication data.
O LCD driver communication data.
O LCD driver communication clock.
- -
I Changer communication data.
O Changer communication data.
I Changer communication clock.
- -
O Cassette tape motor SW.
I Cassette tape FF/REW detection.
- -
I Signal detection.
- GND.
- -
O Front-end communication clock.
I/O Front-end communication data.
O AM power supply SW.
O FM power supply SW.
I/O E-volume communication data.
O E-volume communication clock.
O FM noise detection /Time constant SW.
O Mute control.
O Power amplifier mute.
- -
O Changer control.
O Changer request.
- -
O SVR control.
Processing Operation
"L" : Panel exists.
-
-
-
-
-
-
"L" : Normally.
"L" : Normally.
-
-
-
-
-
-
-
-
-
-
"L" : FF or REW works.
-
"H":Signal exists. "L" : Signal does not exist.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-