EPX-C414/Configuration
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7.10.20 DIO1, DIO2 Digital Input/Output
The EPX-C414 has two digital I/O connectors to support 48 bi-directional TTL digital I/O
lines, 24 of which are capable of event-sense interrupt generation. External voltage
translators allow the signals to drive or sink up to 5VDC.
The 48 lines of digital I/O are terminated through two 50-pin connectors at DIO1 and
DIO2. The DIO1 connector handles I/O ports 0 through 2 while DIO2 handles ports 3
through 5.
Layout and Pin Reference
Pin
Name
Pin
Name
DIO1
1
Bit C7
2
GND
3
Port 2 Bit C6
4
GND
5
Port 2 Bit C5
6
GND
7
Port 2 Bit C4
8
GND
9
Port 2 Bit C3
10
GND
11
Port 2 Bit C2
12
GND
13
Port 2 Bit C1
14
GND
15
Port 2 Bit C0
16
GND
17
Port 1 Bit B7
18
GND
19
Port 1 Bit B6
20
GND
21
Port 1 Bit B5
22
GND
23
Port 1 Bit B4
24
GND
25
Port 1 Bit B3
26
GND
27
Port 1 Bit B2
28
GND
29
Port 1 Bit B1
30
GND
31
Port 1 Bit B0
32
GND
33
Port 0 Bit A7
34
GND
35
Port 0 Bit A6
36
GND
37
Port 0 Bit A5
38
GND
39
Port 0 Bit A4
40
GND
41
Port 0 Bit A3
42
GND
43
Port 0 Bit A2
44
GND
45
Port 0 Bit A1
46
GND
47
Port 0 Bit A0
48
GND
49
+3.3/5V
50
GND
49
50
2
1
