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Microcomputer's Terminal Description - Kenwood CKDC-392V/VA Service Manual

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MICROCOMPUTER'S TERMINAL DESCRIPTION

3 7 63 1515 0
SYSTEM MICROCOMPUTER : UPD780058GC555 (X34 : IC1)
Pin No.
Name
1
PANEL
2
8EJE SW
3
NC
4
Avss
5
L-RST
6
L-CE
7
AVREF1
8
NC
9
IC10-DATA
10
IC10-CLK
11
L-DATAL
TE
L 13942296513
12
L-DATAS
13
L-CLK
14
R-DATA
15
R-QUAL
16
CH-DATAC
17
CH-DATAH
18
CH-CLK
19
CH-REQH
20
NC
21
AFS
22~24
NC
25
CH-CONT
26
TYPE REF
www
27
SD
28
NC
.
29
TYPE2
30
TYPE1
I/O
Description
I
Panel detection
I
O
Not used (out put L)
O
LCD driver RESET
O
LCD driver selection
-
5V
-
Not used (connected to 9pin)
I/O
IC10, E2PROM data communication
O
IC10, E2PROM clock communication
I
Data input from the LCD driver
O
Data output to the LCD driver
O
Clock output to the LCD driver
I
Data input from the RDS
I
Quality input from the RDS
I
Data input from the changer (new 5L)
O
Data output to the changer (new 5L)
I/O
Clock input/output with the Changer (new 5L)
O
Request output to the changer (new 5L)
O
Not used (output L)
O
Noise detection time constant switching terminal
O
Not used (output L)
O
Changer control
O
5V lines output for destination setting
I
Tuner SD input
x
ao
u163
y
O
Not used (output L)
i
I
Destination type selection terminal 2
I
Destination type selection terminal 1
2 9
8
H : Panel detached, L : Panel attached
H : Eject is completed
Except 8cm CD model : Always output L
H : Panel detached, L : RESET
Normal H, Power off L
When 7seg model, output L
H : Select (panel communication)
When panel attached, output L
Non communication : H
Non communication : H
Non communication : H
When panel detached : L
Q Q
Pull down on X34 unit, Pull up on X16 unit
3
6 7
1 3
1 5
When panel detached, output L
When panel detached, output L
Except RDS model : Output L
Except RDS model : Output L
Except changer model : Output L
When non communication, last data keeping
Except changer model : Output L
Check the old and new
Except changer model : Output L
L : Requset
Except changer model : Output L
H : Normal, L : FM/AM seek and AF search
(When tuner SRC auto zero, L)
H : Changer on, L : Changer off
Except changer model : Output L
H : During destination reading
H : Station detected
co
.
Refer to destination type list.
Refer to destination type list.
CKDC-392V/VA/VD/VDA
CKDC-492V/VD
9 4
2 8
Processing Operation
0 5
8
2 9
9 4
2 8
m
9 9
9 9
5

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Ckdc-392vd/vdaCkdc-492v/vd