110502
PRODUCT MANUAL EPX-C380
36
PCB Connector:
MOLEX 5015715007 (J23, J24)
Mating Connector:
MOLEX 5011895010 (Housing)
MOLEX 501193 (Crimp)
DIGITAL I/O
J23, J24 - Digital I/O
Visual
Index
The EPX-C380 has 48 open collector digital I/O bits with a default base address of 120H. Each bit is configured as
an open collector with a 10K pullup. Each bit is able to sink up to 8mA. The first 24 lines are capable of fully latched
event sensing with polarity being software programmable.
Digital I/O Connectors
These 48 lines of digital I/O are terminated through two 50-pin connectors at
J23
and
J24
. The
J23
connector
handles I/O ports 0 through 2 while
J24
handles ports 3 through 5.
The I/O connectors can p5V or +3.3V to an I/O rack for miscellaneous purposes by jumpering
JP9
. When J
P9
is jumpered (2-3), +5V is provided at pin 49 of
J23
and
J24
. If
JP9
is jumpered (1-2), then +3.3V is provided at pin 49
of
J23
and
J24
. It is the user’s responsibility to limit current to a safe value (less than 400 mA) to avoid damaging the
CPU board.
JP9 - Digital I/O Power
Visual
Index
J23
(Ports 0/1/2)
Port 2 Bit 7
Port 2 Bit 6
Port 2 Bit 5
Port 2 Bit 4
Port 2 Bit 3
Port 2 Bit 2
Port 2 Bit 1
Port 2 Bit 0
Port 1 Bit 7
Port 1 Bit 6
Port 1 Bit 5
Port 1 Bit 4
Port 1 Bit 3
Port 1 Bit 2
Port 1 Bit 1
Port 1 Bit 0
Port 0 Bit 7
Port 0 Bit 6
Port 0 Bit 5
Port 0 Bit 4
Port 0 Bit 3
Port 0 Bit 2
Port 0 Bit 1
Port 0 Bit 0
+3.3V/5V
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50
□ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □
□ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49
J24
(Ports 3/4/5)
Port 5 Bit 7
Port 5 Bit 6
Port 5 Bit 5
Port 5 Bit 4
Port 5 Bit 3
Port 5 Bit 2
Port 5 Bit 1
Port 5 Bit 0
Port 4 Bit 7
Port 4 Bit 6
Port 4 Bit 5
Port 4 Bit 4
Port 4 Bit 3
Port 4 Bit 2
Port 4 Bit 1
Port 4 Bit 0
Port 3 Bit 7
Port 3 Bit 6
Port 3 Bit 5
Port 3 Bit 4
Port 3 Bit 3
Port 3 Bit 2
Port 3 Bit 1
Port 3 Bit 0
+3.3V/5V
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50
□ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □
□ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49
+3.3V is provided at pin 49 of
J23/J24
1-2
+5V is provided at pin 49 of
J23/J24
2-3
No Power at Pin 49 of
J23/J24
(default)
OPEN
Avoid Simultaneous Jumpering of pins 1-2 and 2-3.
Misjumpering causes damage to the board.
JP9
□ □ □
3 2 1
5V
GND
+3V
Preliminary