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TUSB8040A1
SLLSEE5C –FEBRUARY 2013–REVISED DECEMBER 2014
TUSB8040A1 Four-Port USB 3.0 Hub
1 Device Overview
1.1 Features
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– High-Speed Upstream Port Suspended
• USB 3.0 Compliant Hub, TID #330000037
– SuperSpeed USB Upstream Connection
– Upstream Port Supports SuperSpeed USB,
High-Speed and Full-Speed Connections – SuperSpeed USB Upstream Port Suspended
– Supports Four Downstream Ports • Optional Serial EEPROM or SMBus Slave
Interface for Custom Configurations:
– Each of the Four Downstream Ports Support
SuperSpeed USB, High-Speed, Full-Speed, or – VID or PID
Low-Speed Connections
– Manufacturer and Product Strings
• USB 2.0 Hub Features
– Serial Number
– Multiple Transaction Translator (MTT) Hub: Four
• Using Pin Selection or EEPROM and SMBus
Transaction Translators, One Per Port
Slave Interface, Each Downstream Port Can Be
– Four Asynchronous Endpoint Buffers Per Independently:
Transaction Translator (TT) for Better
– Enabled or Disabled
Throughput Than the USB-Required Minimum of
– Marked as Removable or Permanently Attached
Two Buffers Per TT
(for Compound Applications)
• Supports Battery Charging Applications
– Have Battery Charging Enabled or Disabled
– Battery Charging 1.2 Charging Downstream Port
• Provides 128-Bit Universally Unique Identifier
(CDP) When Upstream Port is Connected
(UUID)
– Battery Charging 1.2 and Chinese
• Optionally Supports USB 2.0 Compliant Port
Telecommunications Industry Standard YD/T
Indicator LEDs
1591-2009 Dedicated Charging Port (DCP)
• Configurable SMBus Address to Support Multiple
When Upstream Port Is Disconnected
Devices on the Same SMBus Segment
• Supports Operation as a USB 3.0 or USB 2.0
• Supports Onboard and In-System EEPROM
Compound Device
Programming Through the USB 2.0 Upstream Port
• Supports Per Port or Ganged Power Switching and
• Single Clock Input, 24-MHz Crystal or Oscillator
Overcurrent Notification Inputs
• No Special Driver Requirements; Works
• Provides the Following Status Outputs:
Seamlessly With Any Operating System With USB
– High-Speed Upstream Connection
Stack Support
1.2 Applications
• Computer Systems • Monitors
• Docking Stations • Set-top Boxes
1.3 Description
The TUSB8040A1 is a four-port USB 3.0 compliant hub and is available in a 100-pin WQFN package. The
device is designed for operation over the commercial temperature range of 0°C to 70°C.
The TUSB8040A1 provides simultaneous SuperSpeed USB and high-speed or full-speed connections on
the upstream port and provides SuperSpeed USB, high-speed, full-speed, or low-speed connections on
the downstream ports. When the upstream port is connected to an electrical environment that only
supports high-speed, full-speed, or low-speed connections, SuperSpeed USB connectivity is disabled on
the downstream ports. When the upstream port is connected to an electrical environment that only
supports full-speed or low-speed connections, SuperSpeed USB and high-speed connectivity are disabled
on the downstream ports.
The TUSB8040A1 supports up to four downstream ports. The device may be configured to report one to
four downstream ports by pin selection or by an attached EEPROM or SMBus controller. The
configuration options provide the ability to scale the device by application.
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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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