Specifications
Manufacturer: Texas Instruments
Part Number: TUSB7320RKM
Product Type: USB Host Controller IC
USB Standard: USB 3.0
Controller Standard: xHCI
Number of Downstream Ports: 2
Host Interface: PCI Express x1 Gen 2
Supported USB Speeds: SuperSpeed, High-Speed, Full-Speed, and Low-Speed
Package Type: WQFN-MR
Package Code: RKM
Number of Pins: 100
Mounting Style: Surface Mount
Primary Supply Voltage: 3.3V
Core Supply Voltage: 1.1V
Operating Temperature Range: 0°C to +70°C
Configuration Memory: External flash not required for default operation
Optional Configuration Memory: Serial EEPROM
Moisture Sensitivity Level: MSL 3
Maximum Reflow Temperature: 260°C
RoHS Compliant: Yes
Product Status: Active Production
Key Features
USB 3.0-compliant two-port xHCI host controller
PCI Express x1 Gen 2 host interface
Supports two independent downstream USB ports
Supports SuperSpeed, high-speed, full-speed, and low-speed USB devices
Independent port enable and disable control
Independent power control and overcurrent detection for each port
Adjustable transmit swing, de-emphasis, and receiver equalization
Adaptive receiver equalizer design
Internal spread-spectrum clock generation
Supports a low-cost external crystal or oscillator
No external flash required for the default configuration
Optional serial EEPROM support for customized configuration
Compact 100-pin surface-mount package
Applications
Rack, tower, and microserver systems
Desktop computers and motherboards
PCI Express USB expansion cards
High-performance computing systems
Storage area network equipment
Host bus adapter cards
Industrial computer systems
Embedded computing platforms
Data storage and server hardware
Product Description
The Texas Instruments TUSB7320RKM is a USB 3.0-compliant xHCI host controller designed to add two downstream USB ports to a PCI Express system. It connects to the host through a PCIe x1 Gen 2 interface. Each downstream port supports SuperSpeed, high-speed, full-speed, and low-speed USB connections.
Each USB port can be independently enabled, disabled, powered, and monitored for overcurrent conditions. The device also provides adjustable transmit swing, de-emphasis, and equalization settings. These features help improve signal performance across different board layouts and system designs.
The TUSB7320RKM operates without external flash when using its default configuration. A serial EEPROM may be added when a customized configuration is required. Internal spread-spectrum generation and support for an external crystal or oscillator can simplify clock design.
The device is supplied in a 100-pin RKM WQFN-MR surface-mount package with an exposed thermal pad. Its commercial operating temperature range is 0°C to +70°C. The package is RoHS compliant and carries an MSL 3 rating for reflow processing.
The TUSB7320RKM is suitable for servers, motherboards, expansion cards, storage systems, and embedded computing equipment that require reliable PCI Express-to-USB 3.0 connectivity.
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