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IC1 (ELECTRIC UNIT: X25-8902-71)
Terminal Description
Pin No. Pin Name
I/O
1
EJECT
I
Eject key input
2
REF CON
O
A/D converter reference voltage control output
3
NC
O
4
AVSS
-
A/D, D/A converter ground connection terminal
5
NC
O
6
NC
O
7
AVREF1
-
D/A converter reference voltage input terminal
8-10
NC
O
11
DATA H
I
Data input from H/U
12
DATA C
O
Data output to H/U
13
CH CLK
I/O Clock input/output with H/U
14
REQ C
O
Communication request to H/U
15
NC
O
16
P KEY
I
Key data input from LCD driver IC
17
L DATA
O
Data output to LCD driver IC
18
L CLK
O
Clock output to LCD driver IC
19
NC
O
20
NC
O
21
MSTOP
O
Stop request to CD mechanism MI-COM.
22
L INH
O
INH output to LCD driver IC
23
L CE
O
CE output to LCD IC
24
DIMMER
O
Dimmer output
25
NC
O
26
BPF SEL
O
BPF IC control output
27
BPF A
O
BPF IC band control output A
28
BPF B
O
BPF IC band control output B
29
BPF C
O
BPF IC band control output C
30,31 NC
O
32
G ILLUMI
O
Disc indicator control output
33
VSS1
-
Ground connection terminal
34
TYPE1
I
Destination selection terminal
35
NC
O
36
SDA
I/O Data input/output with CD mechanism MI-COM.
37
SCL
I/O Clock input/output with CD mechanism MI-COM.
38
NC
O
39
CH MUTE
O
Audio mute request to H/U
40
MUTE
O
Audio mute control output
41
NC
O
42
PON
O
Peripheral circuits AVR control output
43
NC
O
44
BEEP
O
Beep output
45
MRST
O
Reset output to CD mechanism MI-COM.
46
CD MUTE
I
Mute request input from CD mechanism MI-COM. "Lo": Mute request
47
EJ BUP
I
OR input (EJECT key, B UP inverter signal)
48
NC
O
49
MOTOR
O
CD mechanism loading motor control output
50
LOEJ
I/O CD mechanism loading/Eject switching output
MICROCOMPUTER'S DESCRIPTION
Description
KDC-D301
Processing Operation
"Lo": Eject key pressed
"Hi": Reference voltage supplying
Not used(N.C.)
Connected to ground lines.
Not used(N.C.)
Not used(N.C.)
Connected to BU 5V lines.
Not used(N.C.)
New type: Input, Previous type: Output
"Lo": Communication request
Not used(N.C.)
Not used(N.C.)
Not used(N.C.)
"Lo": Stop mode, "Hi": Operation mode
"Lo": Display lighting-up, "Hi": Display lighting -out
"Hi": Data communication
"Lo": Dimmer mode, "Hi": Except dimmer mode
Not used(N.C.)
(SEL,A,B,C)=("Lo",X,X,X) .................. GND
(SEL,A,B,C)=("Hi","Lo","Lo","Lo") ...... GND
(SEL,A,B,C)=("Hi","Lo","Lo","Hi") ...... 68Hz
(SEL,A,B,C)=("Hi","Lo","Hi","Lo") ...... 170Hz
(SEL,A,B,C)=("Hi","Lo","Hi","Hi") ....... 420Hz
(SEL,A,B,C)=("Hi","Hi","Lo","Lo") ...... 1kHz
(SEL,A,B,C)=("Hi","Hi","Lo","Hi") ....... 2.4kHz
(SEL,A,B,C)=("Hi","Hi","Hi","Lo") ....... 5.9kHz
(SEL,A,B,C)=("Hi","Hi","Hi","Hi") ....... 14.4kHz
Not used(N.C.)
"Hi": Indicator lighting-up, "Lo": Indicator lighting-
out
Connected to ground lines.
J type : Pull down to ground lines
K,E type: Pull up to BU 5V lines
Not used(N.C.)
Not used(N.C.)
"Lo": Mute request
"Hi": Audio mute on, "Lo": Audio mute off
Not used(N.C.)
"Hi": A.+8V AVR, ILL +B AVR , SERVO +B AVR
and BPF IC are turned on.
Not used(N.C.)
"Lo": CD mechanism MI-COM. reset
Not used(N.C.)
"Hi": CD loading/eject action or Break, "Lo": other
"Lo": Loading, "Hi": Eject, "Hi-Z": Stop or Break
5
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