User Manual

IOB Hardware Reference Theory of Operation

CTI Products, Inc.

68-11168-105

Input Value

Field

Active I/O Bit

Combinations

Custom

Text

00 -

01 1

04 2

05 2 + 1

10 3

11 3 + 1

14 3 + 2

15 3 + 2 + 1

40 4

41 4 + 1

44 4 + 2

45 4 + 2 + 1

50 4 + 3

51 4 + 3 + 1

54 4 + 3 + 2

55 4 + 3 + 2 + 1

Table 3 - Input Value Definitions

Note: The IOB’s inputs and outputs are active low. Therefore, for a I/O bit to be

active, it must be pulled to ground. Also, when an output is active, it is driven

low by the IOB.