Iei-integration IMBA-C2260-i2 Bedienungsanleitung PDF herunterladen (Seite 215)

IMBA-C2260-i2 ATX Motherboard

Page 198

D.1 Introduction

The DIO connector on the IMBA-C2260-i2 is interfaced to GPIO ports on the Super I/O

chipset. The DIO has both 4-bit digital inputs and 4-bit digital outputs. The digital inputs

and digital outputs are generally control signals that control the on/off circuit of external

devices or TTL devices. Data can be read or written to the selected address to enable the

DIO functions.

NOTE:

For further information, please refer to the datasheet for the Super I/O

chipset.

D.2 DIO Connector Pinouts

Pin Description Super I/O Pin Super I/O Pin Description

1 Ground N/A N/A

2 VCC N/A N/A

3 Output 3 GP27 General purpose I/O port 2 bit 7.

4 Output 2 GP26 General purpose I/O port 2 bit 6.

5 Output 1 GP25 General purpose I/O port 2 bit 5.

6 Output 0 GP24 General purpose I/O port 2 bit 4.

7 Input 3 GP23 General purpose I/O port 2 bit 3.

8 Input 2 GP22 General purpose I/O port 2 bit 2

9 Input 1 GP21 General purpose I/O port 2 bit 1

10 Input 0 GP20 General purpose I/O port 2 bit 0

Table 6-1: Digital I/O Connector Pinouts

D.3 Assembly Language Samples

D.3.1 Enable the DIO Input Function

The BIOS interrupt call INT 15H controls the digital I/O. An assembly program to enable

digital I/O input functions is listed below.

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