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