1 Features

• USB 3.0-Compliant xHCI host controller

– PCIe x1 Gen2 interface

– Four downstream ports

• Two or four downstream ports

• Each downstream port

– May be independently enabled or disabled

– Has adjustments for transmit swing, deemphasis,

and equalization settings

– May be marked as removable or nonremovable

– Has independent power control and overcurrent

detection

• Requires no external flash for default configuration

– Optional serial EEPROM for custom

configuration

• Internal spread spectrum generation

– Low-cost crystal or oscillator support

• Best-in-class adaptive receiver equalizer design

2 Applications

• Rack server, microserver, and tower server

• High performance computing

• Storage area network (SAN) and host bus adapter

(HBA) card

• Desktop PC or motherboard

3 Description

The TUSB7320 supports up to two downstream ports.

The TUSB7340 is a USB 3.0-compliant xHCI host

controller that supports up to four downstream ports.

Both parts are available in a pin-compatible 100-pin

RKM package. For the remainder of this document,

the name TUSB73x0 is used to reference both the

TUSB7320 and the TUSB7340.

The TUSB73x0 interfaces to the host system through

a PCIe x1 Gen 2 interface and provides SuperSpeed,

high-speed, full-speed, or low-speed connections on

the downstream USB ports.