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TUSB8040 Datasheet(PDF) 2 Page - Texas Instruments |
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TUSB8040 Datasheet(HTML) 2 Page - Texas Instruments |
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2 / 32 page  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 2C/SMBUS Signals ....................................................................................................... 11 2.5 Test and Miscellaneous Signals ......................................................................................... 11 2.6 Power Signals .............................................................................................................. 12 3 FUNCTIONAL DESCRIPTION ............................................................................................... 13 3.1 I 2C 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 |
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