Input-Output Module Connector and Pin Assignments

The following functional groups are available: data input-output (I/O pins), output enable, and external output enable. The table I/O Module Connector Pins describes the I/O module connector pin assignments, followed by a description of each pin group in the table I/O Module Connector Pin Groups:

Pin	Name	Function	Pin	Name	Function
1	GND	Ground	2	I/O0	I/O pin # 0
3	I/O1	I/O pin # 1	4	I/O2	I/O pin # 2
5	I/O3	I/O pin # 3	6	GND	Ground
7	I/O4	I/O pin # 4	8	IO5	I/O pin # 5
9	I/O6	I/O pin # 6	10	I/O7	I/O pin # 7
11	GND	Ground	12	I/O8	I/O pin # 8
13	I/O9	I/O pin # 9	14	I/O10	I/O pin # 10
15	I/O11	I/O pin # 11	16	GND	Ground
17	I/O12	I/O pin # 12	18	I/O13	I/O pin # 13
19	I/O14	I/O pin # 14	20	I/O15	I/O pin # 15
21	GND	Ground	22	I/O16	I/O pin # 16
23	I/O17	I/O pin # 17	24	I/O18	I/O pin # 18
25	I/O19	I/O pin # 19	26	GND	Ground
27	I/O20	I/O pin # 20	28	1/O21	I/O pin # 21
29	I/O22	I/O pin # 22	30	I/O23	I/O pin # 23
31	GND	Ground	32	I/O24	I/O pin # 24
33	I/O25	I/O pin # 25	34	I/O26	I/O pin # 26
35	I/O27	I/O pin # 27	36	GND	Ground
37	I/O28	I/O pin # 28	38	I/O29	I/O pin # 29
39	I/O30	I/O pin # 30	40	I/O31	I/O pin # 31
41	GND	Ground	42	OEO0	Output enable line # 0
43	OEO1	Output enable line # 1	44	OEO2	Output enable line # 2
45	OEO3	Output enable line # 3	46	GND	Ground
47	XOE0	Ext. output enable # 0	48	XOE1	Ext. output enable # 1
49	XOE2	Ext. output enable # 2	50	XOE3	Ext. output enable # 3

I/O Module Connector Pins

Name	I/O	Function
IOX	Input/output	Input/output pin number. Data input-output lines. A 74FCT245 is used as a data driver.
OEOX	Output	Output enable lines for each I/O group (IO0-IO7 group 0, IO8-1015 group 1, etc.). A low on this output indicates that the specific group output drivers are enabled (the GT-DIO is driving data out). These lines are pulled up internally.
XOEX	Input	External outputs enable controls for each I/O pin group. A low on this input line forces the specific group to disable its output drivers. These lines are pulled up internally.

I/O Module Connector Pin Groups

Input-Output Module Connector and Pin Assignments

Pin

Name

Function

Pin

Name

Function

1

GND

Ground

2

I/O0

I/O pin # 0

3

I/O1

I/O pin # 1

4

I/O2

I/O pin # 2

5

I/O3

I/O pin # 3

6

GND

Ground

7

I/O4

I/O pin # 4

8

IO5

I/O pin # 5

9

I/O6

I/O pin # 6

10

I/O7

I/O pin # 7

11

GND

Ground

12

I/O8

I/O pin # 8

13

I/O9

I/O pin # 9

14

I/O10

I/O pin # 10

15

I/O11

I/O pin # 11

16

GND

Ground

17

I/O12

I/O pin # 12

18

I/O13

I/O pin # 13

19

I/O14

I/O pin # 14

20

I/O15

I/O pin # 15

21

GND

Ground

22

I/O16

I/O pin # 16

23

I/O17

I/O pin # 17

24

I/O18

I/O pin # 18

25