SuperSpeed USB 4–Port xHCI Host Controller

SuperSpeed USB 4–Port xHCI Host Controller


The TUSB7320 supports up to two downstream ports.

The TUSB7340 is a USB 3.0 xHCI compliant 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 via a PCIe x1 Gen 2 interface and provides SuperSpeed, high-speed, full-speed, or low-speed connections on the downstream USB ports.

  • 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, De-Emphasis, and Equalization Settings
    • May Be Marked as Removable/Non-Removable
    • 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
  • Supports Input Frequencies Between 20 MHz and 50 MHz
    • Allows Use of 48-MHz System Reference Clock
  • Best-In-Class Adaptive Receiver Equalizer Design
    • Notebooks
    • Desktop Computers
    • Workstations



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