TUSB321AIRWBR

1 Features

• 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)

• VBUS 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

• Industrial Temperature Range of –40 to 85°C

2 Applications

• Host, Device, Dual Role Port Applications

• Mobile Phones

• Tablets and Notebooks

• USB Peripherals

3 Description

The TUSB321AI device enables USB Type-C ports with the configuration channel (CC) logic needed for Type-C ecosystems. The TUSB321AI device uses the CC pins to determine port attach and detach, cable orientation, role detection, and port control for Type-C current mode. The TUSB321AI 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 TUSB321AI 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. VBUS 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. The TUSB321AI device is available in industrial and commercial temperature ranges.

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