4
KDC-3047M/MP1046/MP145/MP145CR/MP146/MP2046
/MP245/MP246AM/MP246G/MP246S/MP3046
MICROCOMPUTER’S TERMINAL DESCRIPTION
●
SYSTEM
μ
-COM : IC1 on X34- (ELECTRIC UNIT)
Pin No.
Pin Name
I/O
Application
Truth Value
Table
Processing / Operation / Description
1,2
NC
-
Not used
Output L
fi
xed
3
PON CD
O
CD mechanism power supply control
H: Power supply ON
4,5
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
I
Memory extension bus width setting
Connects to VSS
9
CNVSS
I
VSS for
fl
ash ROM connector
Connects to VSS (Pull-down), H: Rewritable
10
XCIN
-
32.768kHz
11
XCOUT
-
32.768kHz
12
RESET
-
L: Reset
13
XOUT
-
16.0MHz
14
VSS
-
15
XIN
-
16.0MHz
16
VCC1
-
17
NC
-
Not used
Output L
fi
xed
18
CD CCE
O
CD mechanism chip enable
19
CD PIO0
I
Communication request from mecha-
nism DSP
H: Data request
20
PANEL DET
I
Panel communication detection
H: No panel, L: Panel found
21
CD DRIVE MUTE
O
Motor driver mute output
H: Mute (Output OFF), L: Output ON
22
CD EJECT
O
LOAD/EJECT control
q
Refer to the truth value table
23
CD LOAD
O
LOAD/EJECT control
q
Refer to the truth value table
24
CD REST SW
I
CD inner circumference detection
L: Inner circumference detection
25
CD MUTE
I
CD mute request
L: Mute request
26
CD SRAM STB
O
1M-bit-SRAM standby
L: SRAM standby
27
CD MRST
O
CD mechanism reset
H: Normal, L: Reset
28
BEEP
O
Beep output
2kHz / 1kHz
29
TUN SCL
I/O Tuner I2C clock output
30
TUN SDA
I/O Tuner I2C 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, 11 minutes after momen-
tary power-down or panel detached or ACC OFF: L
35
CD SI
O
CD mechanism serial output
36
CD SO
I
CD mechanism serial input
37
CD CLK
O
Serial clock output
f=1MHz
38~40
NC
O
Not used
Output L
fi
xed
41
EPM
I
Flash ROM EPM input
L: Rewritable
41
ROMCOR DET
I
E2PROM writing request
H: writing
