KDC-MP4028/MP428/MP6029
5
MICROCOMPUTER’S TERMINAL DESCRIPTION
●
SYSTEM
µ
-COM : IC1 on X34- (ELECTRIC UNIT)
Pin No.
Pin Name
I/O
Application
Processing Operation
1
REMO
I
Remote control signal
Detects puls width
2
LX MUTE
I
Mute request from slave unit
H : MUTE ON, L : MUTE OFF
3
AUD SDA
I/O
E-VOL data
4
AUD SEL
O
E-VOL control
5
AUD SCL
O
E-VOL clock output
6
BYTE
-
GND
7
CNVSS
-
8
XCIN
I
Oscillator terminal
32.768kHz
9
XCOUT
-
Oscillator terminal
10
RESET
I
Reset detection
11
XOUT
-
Oscillator terminal
12
VSS
-
13
XIN
I
Oscillator terminal
12.0MHz
14
VCC1
-
15
NMI
I
16
CN DET
I
Panel communication detection
H : Panel off, L : Panel on
17
NC
-
18
LX REQ S
I
Communication request from slave unit
19
PON AM
I/O
AM power supply control
AM is received : H, AM is not received : Hi-z
20
LX REQ M
O
Communication request to slave unit
21
TUN IFC OUT
I
Front-end IFC output
H : Station exists, L : Station does not exsist
22
RDS AFS L
I/O
Function for models of European Market
23
RDS AFS M
I/O
Function for models of European Market
24,25
NC
-
26
PWIC BEEP
O
Beep
27
TUN SCL
I/O
Front-end I2C clock
MAX 400kHz
28
TUN SDA
I/O
Front-end I2C data
29
VFD SYS DATA
O
VFD data
30
VFD PAN DATA
I
VFD data
31
VFD CL
O
VFD clock
125kHz
32
VFD INH
O
VFD data blanking
H : VFD turns on, L : VFD turns off
33
SDA
I/O
CD mecha I2C data
34
SCL
I/O
CD mecha I2C clock
35
PON PANEL
I/O
Panel 5V control
ON : L
Momentary power down, panel off, 11 munits after ACC OFF : Hi-Z
36
DSI
I/O
DSI / Eject LED control
OFF : Hi-z, Panel off : Puls drives, Illumination on and power on : H
37,38
NC
-
39
EPM
I
To VSS via a resister
40
PANEL DET
I
Panel detection
L : Panel off, H : Panel on