TUSB8040

SLLSE42F

– SEPTEMBER 2010 – REVISED OCTOBER 2011

www.ti.com

Contents

1

PRODUCT OVERVIEW

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

1.1

Features

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

1.2

Introduction

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

1.3

Functional Block Diagram

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

2

PIN DESCRIPTIONS

............................................................................................................. 8

2.1

Clock and Reset Signals

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

2.2

USB Upstream Signals

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

2.3

USB Downstream Signals

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

2.4

I

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

2.5

Test and Miscellaneous Signals

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

2.6

Power Signals

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

3

FUNCTIONAL DESCRIPTION

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

3.1

I

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

3.2

SMBus Slave Operation

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

3.3

Configuration Registers

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

3.3.1

ROM Signature Register

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

3.3.2

Vendor ID LSB Register

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

3.3.3

Vendor ID MSB Register

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

3.3.4

Product ID LSB Register

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

3.3.5

Product ID MSB Register

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

3.3.6

Device Configuration Register

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

3.3.7

Battery Charging Support Register

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

3.3.8

Device Removable Configuration Register

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

3.3.9

Port Used Configuration Register

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

3.3.10

Language ID LSB Register

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

3.3.11

Language ID MSB Register

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

3.3.12

Serial Number String Length Register

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

3.3.13

Manufacturer String Length Register

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

3.3.14

Product String Length Register

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

3.3.15

Serial Number Registers

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

3.3.16

Manufacturer String Registers

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

3.3.17

Product String Registers

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

3.3.18

Device Status and Command Register

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

4

CLOCK GENERATION

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

4.1

Crystal Requirements

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

4.2

Input Clock Requirements

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

5

POWER UP AND RESET

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

6

ELECTRICAL SPECIFICATIONS

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

6.1

ABSOLUTE MAXIMUM RATINGS

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

6.2

RECOMMENDED OPERATING CONDITIONS

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

6.3

THERMAL INFORMATION

6.4

3.3-V I/O ELECTRICAL CHARACTERISTICS

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

6.5

HUB INPUT SUPPLY CURRENT

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

2

Contents

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