TUSB321

• USB Type-C™ Specification 1.1
• Backward Compatible with USB Type-C Specification 1.0
• Supports Up to 3 A of Current Advertisement through dedicated Current Mode pin
• Mode Configuration
  • Host Only – DFP (Source)
  • Device Only – UFP (Sink)
  • Dual Role Port – DRP
• Channel Configuration (CC)
  • Attach of USB Port Detection
  • Cable Orientation Detection
  • Role Detection
  • Type-C Current Mode advertisement and detection (Default, Medium, High)
• V_BUS Detection
• VCONN Support for Active Cables
• Cable Detection and Direction Control
  for External Switches
• Supply Voltage: 4.5 V to 5.5 V
• Low Current Consumption

All trademarks are the property of their respective owners.

The TUSB321 device enables USB Type-C ports with the configuration channel (CC) logic needed for Type-C ecosystems. The TUSB321 device uses the CC pins to determine port attach and detach, cable orientation, role detection, and port control for Type-C current mode. The TUSB321 device can be configured as a downstream facing port (DFP), upstream facing port (UFP) or a dual role port (DRP) making it ideal for any application.

The TUSB321 device when configured as a DRP alternates configuration as a DFP or UFP according to the Type-C Specifications. The CC logic block monitors the CC1 and CC2 pins for pullup or pulldown resistances to determine when a USB port has been attached, the orientation of the cable, and the role detected. The CC logic detects the Type-C current mode as default, medium, or high depending on the role detected. V_BUS detection is implemented to determine a successful attach in UFP and DRP modes.

The device operates over a wide supply range and has low-power consumption.