TUSB8040ARKMR.A中文资料德州仪器数据手册PDF规格书

1.1 Features

1• USB 3.0 Compliant Hub, TID# 330000037

– Upstream Port Supports SuperSpeed USB, High-Speed and Full-Speed Connections

– Supports Four Downstream Ports

– Each of the Four Downstream Ports Support SuperSpeed USB, High-Speed, Full-Speed or

Low-Speed Connections

• USB 2.0 Hub Features

– Multi Transaction Translator (MTT) Hub: Four Transaction Translators, One Per Port

– Four Asynchronous Endpoint Buffers Per Transaction Translator (TT) for Better Throughput Than

the USB Required Minimum of Two Buffers Per TT

• Supports Battery Charging Applications

– Battery Charging 1.2 Compliant Charging Downstream Port (CDP) when Upstream Port is

Connected

– Battery Charging 1.2 and Chinese Telecommunications Industry Standard YD/T 1591-2009

Compliant Dedicated Charging Port (DCP) when Upstream Port is Disconnected

• Supports Operation as a USB 3.0 or USB 2.0 Compound Device

• Supports Per Port or Ganged Power Switching and Over-Current Notification Inputs

• Provides the following status outputs:

– High-Speed Upstream Connection

– High-Speed Upstream Port Suspended

– SuperSpeed USB Upstream Connection

– SuperSpeed USB Upstream Port Suspended

• Optional Serial EEPROM or SMBus Slave Interface for Custom Configurations:

– VID or PID

– Manufacturer and Product Strings

– Serial Number

• Using Pin Selection or EEPROM and SMBus Slave Interface, Each Downstream Port Can Be

Independently:

– Enabled or Disabled

– Marked as Removable or Permanently Attached (for Compound Applications)

– Have Battery Charging Enabled or Disabled

• Provides 128-Bit Universally Unique Identifier (UUID)

• Optionally Supports USB 2.0 Compliant Port Indicator LEDs

• Configurable SMBus Address to Support Multiple Devices on the Same SMBus Segment

• Supports On-Board and In-System EEPROM Programming Via the USB 2.0 Upstream Port

• Single Clock Input, 24-MHz Crystal or Oscillator

• No Special Driver Requirements; Works Seamlessly With Any Operating System With USB Stack

Support

1.2 Applications

• Computer Systems

• Docking Stations

• Monitors

• Set-top Boxes