Overview
The TUSB321RWBR from Texas Instruments is a USB Type-C configuration channel logic and port control device. It is designed to enable USB Type-C ports with the necessary configuration channel (CC) logic for Type-C ecosystems. This device supports USB Type-C Specification 1.1 and is backward compatible with USB Type-C Specification 1.0. It can be configured as a downstream facing port (DFP), upstream facing port (UFP), or a dual role port (DRP), making it versatile for various applications. The TUSB321RWBR monitors CC pins to determine port attach and detach, cable orientation, role detection, and port control for Type-C current mode.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | X2QFN (RWB) | - |
| Pins | 12 | - |
| Operating Temperature Range | 0 to 70 | °C |
| Supply Voltage | 4.5 to 5.5 | V |
| Current Advertisement | Up to 3 A | - |
| Internal Pullup Resistance (PORT) | 588 kΩ | - |
| Internal Pulldown Resistance (PORT) | 1.1 MΩ | - |
| VCONN Current Limit | 200 mA | - |
Key Features
- Supports USB Type-C Specification 1.1 and backward compatible with USB Type-C Specification 1.0
- Configurable as Host Only – DFP (Source), Device Only – UFP (Sink), or Dual Role Port – DRP
- Channel Configuration (CC) for port attach and detach, cable orientation, role detection, and Type-C current mode
- Type-C current mode advertisement and detection (Default, Medium, High)
- VBUS detection for successful attach in UFP and DRP modes
- VCONN support for active cables
- Cable detection and direction control for external switches
- Low current consumption
- External MUX direction control based on cable orientation
Applications
- Host, Device, and Dual Role Port applications
- Mobile Phones
- Tablets and Notebooks
- USB Peripherals
Q & A
- What is the TUSB321RWBR used for?
The TUSB321RWBR is used to enable USB Type-C ports with the necessary configuration channel (CC) logic for Type-C ecosystems.
- What USB Type-C specifications does the TUSB321RWBR support?
The TUSB321RWBR supports USB Type-C Specification 1.1 and is backward compatible with USB Type-C Specification 1.0.
- What are the possible configurations for the TUSB321RWBR?
The TUSB321RWBR can be configured as a downstream facing port (DFP), upstream facing port (UFP), or a dual role port (DRP).
- How does the TUSB321RWBR detect cable orientation?
The TUSB321RWBR detects cable orientation by monitoring the voltage on the CC pins and controls an external MUX using the DIR pin.
- What is the role of the VBUS detection in the TUSB321RWBR?
VBUS detection is used to determine the attachment and detachment of a UFP and to resolve the role in DRP mode.
- Does the TUSB321RWBR support VCONN for active cables?
- What is the supply voltage range for the TUSB321RWBR?
The supply voltage range for the TUSB321RWBR is 4.5 V to 5.5 V.
- How does the TUSB321RWBR handle current advertisement?
The TUSB321RWBR supports up to 3 A of current advertisement through a dedicated Current Mode pin and detects Type-C current mode as default, medium, or high.
- What are the typical applications of the TUSB321RWBR?
The TUSB321RWBR is typically used in mobile phones, tablets, notebooks, and USB peripherals.
- What package type and pin count does the TUSB321RWBR have?
The TUSB321RWBR comes in a 12-pin X2QFN (RWB) package.
