Manual ETH-DIO-48
15
Chapter 6: Connector Pin Assignments
Two 50-pin male headers are provided for I/O connections designated as P2 and P3, which
are also referred to as Groups 0 and 1 respectively.
PIN
P2
P3
PIN FUNCTION
1
I/O 23
I/O 47
2
GROUND
3
I/O 22
I/O 46
4
GROUND
5
I/O 21
I/O 45
6
GROUND
7
I/O 20
I/O 44
8
GROUND
9
I/O 19
I/O 43
10 GROUND
11
I/O 18
I/O 42
12 GROUND
13
I/O 17
I/O 41
14 GROUND
15
I/O 16
I/O 40
16 GROUND
17
I/O 15
I/O 39
18 GROUND
19
I/O 14
I/O 38
20 GROUND
21
I/O 13
I/O 37
22 GROUND
23
I/O 12
I/O 36
24 GROUND
25
I/O 11
I/O 35
26 GROUND
27
I/O 10
I/O 34
28 GROUND
29
I/O 09
I/O 33
30 GROUND
31
I/O 08
I/O 32
32 GROUND
33
I/O 07
I/O 31
34 GROUND
35
I/O 06
I/O 30
36 GROUND
37
I/O 05
I/O 29
38 GROUND
39
I/O 04
I/O 28
40 GROUND
41
I/O 03
I/O 27
42 GROUND
43
I/O 02
I/O 26
44 GROUND
45
I/O 01 I/O 25
46 GROUND
47
I/O 00 I/O 24
48 GROUND
49 +5VDC +5VDC
50 GROUND
Table 6-1: 50-Pin Connector Pin Assignments
Signal Name
I/O Signal Description Name
I/O0 through I/O47
I/O
Digital I/O lines, configurable as inputs or outputs in groups of 8 bits,
pulled up or down through 10Kohms or floating
+5VDC
O
Sourced voltage output via 0.5A resettable fuse
GROUND
-
Ground reference connection
Table 6-2: I/O Connector Signal Names, Directions and Descriptions