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5
KDC-MP208/MP238/MP238CR/MP239
KDC-MP3039/MP339/MP339S/MP439
●
SYSTEM µ-COM: IC1 on X34- (ELECTRIC UNIT)
Pin No.
Pin Name
I/O
Application
Truth Value
Table
Processing Operation Description
1
LX DATA M
I/O
Data to slave unit
Pull-down (GND)
2
LX CLK
I/O
LX-BUS clock
125k~65kHz
3~5
NC
-
Not used
Output L fi xed
6
REMO
I
Remote control signal input
Detects pulse width
7
NC
-
Not used
Output L fi xed
8
BYTE
-
Memory extended bus width setting
Connects to VSS
9
CNVSS
-
32.768kHz
Connects to VSS
10
XCIN
-
32.768kHz
11
XCOUT
-
32.768kHz
12
RESET
-
L: Reset
13
XOUT
-
10.0MHz
14
VSS
-
15
XIN
-
10.0MHz
16
VCC1
-
17
NMI
I
Connects to VCC
18
PANEL DET
I
Panel communication detection
H: Panel detached, L: Panel attached
19,20
NC
-
Not used
Output L fi xed
21
ROMCOR DET
I
E2PROM writing request
H: Writing
22,23
NC
-
Not used
Output L fi xed
24
PON FL
O
Key illumination power supply control
ON: H, OFF: L
25
NC
-
Not used
Output L fi xed
26
PON PANEL
I/O
Panel 5V control
ON: L, Momentary power down/Panel detached
: Hi-Z, 11 minutes after ACC OFF: Hi-Z
27,28
NC
-
Not used
Output L fi xed
29
AUD SCL
I/O
E-VOL clock output
30
AUD SDA
I/O
E-VOL data input/output
31
VFD SYS DATA
O
VFD data output
32
VFD PAN DATA
I
VFD data input
33
VFD CLK
O
VFD clock output
125kHz
34
VFD BLK
O
VFD data blanking output
H: Reset cancelled, L: Reset, Momentary power down
/Panel detached: L, 11 minutes after ACC OFF: L
35
CD SI
O
CD mechanism serial output
36
CD SO
I
CD mechanism serial input
37
BUCK
O
Serial clock output
1MHz
38
CD LOS SW
I
CD loading detection
39
PIO0
I
Communication request from mechanism DSP
H: Data request
40
CD SRAMSTB
O
1M-bit SRAM standby
H: SRAM standby
41
EPM
I
Flash EPM input
Connects to VSS
42
CD LOE LIM SW
I
CD detection (Chucking SW)
H: Loading completed, L: No disc
MICROCOMPUTER’S TERMINAL DESCRIPTION