Datasheet

Not Recommended for New Designs
TUSB8040
www.ti.com SLLSE42I –SEPTEMBER 2010–REVISED SEPTEMBER 2013
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 ................................................................................................... 9
2.2 USB Upstream Signals ..................................................................................................... 9
2.3 USB Downstream Signals ................................................................................................ 10
2.4 I
2
C/SMBUS Signals ....................................................................................................... 11
2.5 Test and Miscellaneous Signals ......................................................................................... 11
2.6 Power Signals .............................................................................................................. 12
3 FUNCTIONAL DESCRIPTION ............................................................................................... 13
3.1 I
2
C EEPROM Operation .................................................................................................. 13
3.2 SMBus Slave Operation .................................................................................................. 13
3.3 Configuration Registers ................................................................................................... 14
3.3.1 ROM Signature Register ....................................................................................... 14
3.3.2 Vendor ID LSB Register ....................................................................................... 14
3.3.3 Vendor ID MSB Register ...................................................................................... 14
3.3.4 Product ID LSB Register ....................................................................................... 15
3.3.5 Product ID MSB Register ...................................................................................... 15
3.3.6 Device Configuration Register ................................................................................ 15
3.3.7 Battery Charging Support Register ........................................................................... 16
3.3.8 Device Removable Configuration Register .................................................................. 17
3.3.9 Port Used Configuration Register ............................................................................ 17
3.3.10 Language ID LSB Register .................................................................................... 18
3.3.11 Language ID MSB Register ................................................................................... 18
3.3.12 Serial Number String Length Register ....................................................................... 18
3.3.13 Manufacturer String Length Register ........................................................................ 19
3.3.14 Product String Length Register ............................................................................... 19
3.3.15 Serial Number Registers ....................................................................................... 19
3.3.16 Manufacturer String Registers ................................................................................ 20
3.3.17 Product String Registers ....................................................................................... 20
3.3.18 Device Status and Command Register ...................................................................... 20
4 CLOCK GENERATION ........................................................................................................ 21
4.1 Crystal Requirements ..................................................................................................... 21
4.2 Input Clock Requirements ................................................................................................ 21
5 POWER UP AND RESET ..................................................................................................... 22
6 ELECTRICAL SPECIFICATIONS .......................................................................................... 23
6.1 ABSOLUTE MAXIMUM RATINGS ...................................................................................... 23
6.2 RECOMMENDED OPERATING CONDITIONS ....................................................................... 23
6.3 THERMAL INFORMATION .............................................................................................. 24
6.4 3.3-V I/O ELECTRICAL CHARACTERISTICS ........................................................................ 25
6.5 HUB INPUT SUPPLY CURRENT ....................................................................................... 26
2 Contents Copyright © 2010–2013, Texas Instruments Incorporated