USB-TO-GPIO datasheet(3/50 Pages) TI1

3 / 50 page

Contents

Preface

............................................................................................................................... 7

Introduction

............................................................................................................... 9

1.1

List of Hardware Items for Operation

............................................................................ 9

1.2

List of Software Items for Operation

............................................................................ 10

1.3

Step-by-Step Instructions for Operation and Troubleshooting

.............................................. 10

Summary of Hardware Design

.................................................................................... 11

2.1

Introduction

......................................................................................................... 11

2.2

Ribbon-Cable Connector J2 and Pinout

........................................................................ 11

2.3

Configuration of Pullup Resistors for Pins 8, 9, and 10

...................................................... 12

2.4

EEPROM

........................................................................................................... 12

2.5

LED Indication of USB Attached

................................................................................ 12

Firmware Programming and Communications Protocol

................................................ 13

3.1

Firmware Features Summary

................................................................................... 13

3.2

Firmware Version Command and Response

.................................................................. 13

3.3

I2C Write Command and Response

............................................................................ 14

3.4

I2C Read Command and Response

............................................................................ 14

3.5

Read/Write Port 0 Command and Response

.................................................................. 15

3.6

EEPROM Program Command and Response

................................................................ 15

3.7

EEPROM Read Command and Response

.................................................................... 16

3.8

Set Pullup Resistors Command and Response

............................................................... 16

3.9

Set I2C-PMBUS-SMBUS Speed Command and Response

................................................. 17

3.10

Generic I2C Write Command and Response

.................................................................. 17

3.11

Generic I2C Read Command and Response

.................................................................. 18

3.12

Board Test Command and Response

.......................................................................... 18

3.13

Other Commands for Different Applications

................................................................... 18

Firmware Versioning Scheme

.................................................................................... 19

4.1

Introduction

......................................................................................................... 19

4.2

Rules for Implementing Compliant Custom Firmware

........................................................ 20

4.3

Compliant Versioning

............................................................................................. 20

GUI and PC Libraries

................................................................................................ 25

5.1

Windows XP

....................................................................................................... 26

5.2

Device Transport

.................................................................................................. 27

5.3

GUI Application

.................................................................................................... 28

Schematic, Bill of Materials, PCB Layout

..................................................................... 29

6.1

Schematic

.......................................................................................................... 30

6.2

Bill of Materials (BOM)

............................................................................................ 31

6.3

Printed Circuit Board (PCB) Layout

............................................................................. 33

Lists of Communication Protocol

............................................................................... 37

A.1

Host PC to USB Interface Adapter Commands

............................................................... 37

A.2

USB Interface Adapter to Host PC Response Commands

.................................................. 38

PMBUS/SMBUS Communications

............................................................................... 39

B.1

Overview

............................................................................................................ 39

SLLU093 – August 2006

Contents

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