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