TUSB8020A, TUSB8040A

www.ti.com

SLLSEA7B – MAY 2012 – REVISED AUGUST 2012

Contents

1

PRODUCT OVERVIEW

......................................................................................................... 5

1.1

Features

...................................................................................................................... 5

1.2

APPLICATIONS

............................................................................................................. 5

1.3

Introduction

.................................................................................................................. 6

1.4

Functional Description

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

2

PIN DESCRIPTIONS

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

2.1

Signal Descriptions

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

2.2

Clock and Reset Signals

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

2.3

USB Upstream Signals

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

2.4

USB Downstream Signals

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

2.5

I

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

2.6

Test and Miscellaneous Signals

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

2.7

Power Signals

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

3

FUNCTIONAL DESCRIPTION

............................................................................................... 21

3.1

TUSB8040A Register Map

............................................................................................... 21

3.2

3.3

SMBus Slave Operation

.................................................................................................. 22

3.4

Configuration Registers

................................................................................................... 22

3.4.1

ROM Signature Register

....................................................................................... 22

3.4.2

Vendor ID LSB Register

....................................................................................... 22

3.4.3

Vendor ID MSB Register

...................................................................................... 23

3.4.4

Product ID LSB Register

....................................................................................... 23

3.4.5

Product ID MSB Register

...................................................................................... 23

3.4.6

Device Configuration Register

................................................................................ 24

3.4.7

Battery Charging Support Register

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

3.4.8

Device Removable Configuration Register

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

3.4.9

Port Used Configuration Register

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

3.4.10

Language ID LSB Register

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

3.4.11

Language ID MSB Register

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

3.4.12

Serial Number String Length Register

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

3.4.13

Manufacturer String Length Register

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

3.4.14

Product String Length Register

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

3.4.15

Serial Number Registers

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

3.4.16

Manufacturer String Registers

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

3.4.17

Product String Registers

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

3.4.18

Device Status and Command Register

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

4

CLOCK GENERATION

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

4.1

Crystal Requirements

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

4.2

Input Clock Requirements

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

5

POWER UP AND RESET

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

6

ELECTRICAL SPECIFICATIONS

.......................................................................................... 32

6.1

ABSOLUTE MAXIMUM RATINGS

...................................................................................... 32

6.2

RECOMMENDED OPERATING CONDITIONS

....................................................................... 32

6.3

THERMAL INFORMATION

6.4

3.3-V I/O ELECTRICAL CHARACTERISTICS

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

6.5

HUB INPUT SUPPLY CURRENT

2

Contents

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