Read Panasonic KX-PX1CX Service Manual online
27
KX-PX1CX
4.5.2.
Mechanical CPU for IC8
Pin
Signal Name
Standard function
Act.
Purpose
I/O
R/W
1
P60/SCL0
General port/I2C communication
clock
clock
-
I
2
C communication clock
I
R/W
2
P61/SDA0
General port/I
2
C communication
data
-
I
2
C communication data
IO
R/W
3
P62/ (FR_RST#)
General port
L
Reset signal to each FRV of the MAIN and IP
"L": Reset
"L": Reset
O
W
4
P63/
(HEAD_THRM_ER
R)
(HEAD_THRM_ER
R)
General port
-
Detection of abnormal Head temperature (ther-
mistor voltage 3V)
mistor voltage 3V)
I
R
5
P33/ (FANON)
General port/interruption/timer
L
Fan ON/OFF (L: ON)
O
W
6
P75/ (CASRSV)
General port
-
Not used
I
R
7
P74/(CAS1)
General port
-
CAS1, CAS0
→ 00: Wide, 01: K size, 10: L
size, 11: no cassette
I
R
8
P73/ (CAS0)
General port
-
I
R
9
P72/ (INKRSV)
General port
-
Not used
I
R
10
P71/(INK1)
General port
-
INK1, INK0
→ 00: Wide, 01: L size, 10: K size,
11: no cassette
I
R
11
P70/ (NK0)
General port
-
I
R
12
P32/INTP3
General port/interruption
L
PX1/PX10 KEY_POWER "L":ON
I
R
13
P31/INTP2
General port/interruption
L
IP_DETECT "L": detection
I
R
14
P30/INTP1
(FRIRQ#)
(FRIRQ#)
General port/interruption
L
Print_CPU interruption (interruption input)
I
R
15
P17/ (MDM2) IN2
General port/timer
-
MD motor control IN2, IN1
→ 11: Break, 01:
Down, 10: Up, 00: Stop
O
W
16
P16/ (MDM1) N1
General port/interruption/timer
-
O
W
17
P15/TOH (PSM-
VREF)
VREF)
General port/timer
-
Vref setting of the PS motor (PWM output)
O
W
18
P14/RxD6
(RXD78K)
(RXD78K)
General port/serial IF
-
Serial communication received data (for writing
FROM)
FROM)
I
R
19
P13/TxD6
(TXD78K)
(TXD78K)
General port/serial IF
-
Serial communication transmitted data (for writ-
ing FROM)
ing FROM)
O
W
20
P12/ (PSM2) IN2
General port/serial IF
-
PS motor control IN2, IN1
→ 11: Break, 01:
Paper feeding, 10: Pullback, 00: Stop
O
W
21
P11/ (PSM1) IN1
General port/serial IF
-
O
W
22
P10/ (PSMSPD)
General port/serial IF
-
Not used(10k Pull-UP)
O
W
23
AVREF
Analog reference voltage
-
24
AVSS
Analog GND
-
25
P27/ANI7 (INK-
BAND)
BAND)
General port/analog input
A
Ink band detection (analog input)
I
R
26
P26/ANI6 (PTOP)
General port/analog input
A
Paper top detection (analog input)
I
R
27
P25/ANI5 (THRM) General port/analog input
A
Thermal head temperature detection (analog
input)
input)
I
R
28
P24/ANI4
General port/analog input
A
FAN error detection Voltage drop detection
(analog input)
(analog input)
I
R
29
P23/ANI3
General port/analog input
A
3.3V detection in the IP system (analog input)
(detect in the High mode)
(detect in the High mode)
I
R
30
P22/ANI2
General port/analog input
A
3.3V detection in the MAIN system (analog
input) (detect in the High mode)
input) (detect in the High mode)
I
R
31
P21/(MDSEN)
General port/analog input
A
MODE sensor
I
R
32
P20/(MDINI)
General port/analog input
A
MODE initial detection (0: home position)
I
R
33
P130/ (VTHON)
General port
H
VTH ON/OFF Control "H": ON
Output “L” at the time of power on and resetting
78K to avoid the instantaneous on-state of Vth.
Output “L” at the time of power on and resetting
78K to avoid the instantaneous on-state of Vth.
O
W
34
P01/TI010
General port/timer
-
Remote Control Input signal (Capture interrup-
tion control)
tion control)
I
R
35
P00/TI000
(FGSEN)
(FGSEN)
General port/timer
-
FG sensor (input capture)
I
R
36
P140/INTP6
(PWRON)
(PWRON)
General port/interruption
H
Power ON/OFF Control
78K
78K
→ ON/OFF control of DC/DC (3.3/1.4V)
"0": FOFF / "1": FON
Take the FRV port and the OR gate from the
design prototype
Take the FRV port and the OR gate from the
design prototype
O
W
37
P120/
(FGSENRSV)
(FGSENRSV)
General port/interruption
-
FG sensor interruption detection (Main control
of the FG sensor)
of the FG sensor)
I
R
38
P41/ (78KIRQ1#)
General port
L
Interruption request 1_Reserved (to the Print
CPU)
CPU)
O
W
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