SLLSEO5D October   2015  – March 2021 TUSB322I

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Revision History
  4. 4 Pin Configuration and Functions
  5. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 Switching Characteristics
  6. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Cables, Adapters, and Direct Connect Devices
        1. 6.3.1.1 USB Type-C Receptacles and Plugs
        2. 6.3.1.2 USB Type-C Cables
        3. 6.3.1.3 Legacy Cables and Adapters
        4. 6.3.1.4 Direct Connect Devices
        5. 6.3.1.5 Audio Adapters
      2. 6.3.2 Port Role Configuration
        1. 6.3.2.1 Downstream Facing Port (DFP) - Source
        2. 6.3.2.2 Upstream Facing Port (UFP) - Sink
        3. 6.3.2.3 Dual Role Port (DRP)
      3. 6.3.3 Type-C Current Mode
      4. 6.3.4 Accessory Support
        1. 6.3.4.1 Audio Accessory
        2. 6.3.4.2 Debug Accessory
      5. 6.3.5 I2C and GPIO Control
      6. 6.3.6 VBUS Detection
      7. 6.3.7 Cable Orientation and External MUX Control
      8. 6.3.8 VCONN Support for Active Cables
    4. 6.4 Device Functional Modes
      1. 6.4.1 Unattached Mode
      2. 6.4.2 Active Mode
      3. 6.4.3 Shutdown Mode
      4. 6.4.4 Dead Battery Mode
    5. 6.5 Programming
    6. 6.6 Register Maps
      1. 6.6.1 CSR Registers
        1. 6.6.1.1 Device Identification Register (offset = 0x07 through 0x00) [reset = 0x00, 0x54, 0x55, 0x53, 0x42, 0x33, 0x32, 0x32]
        2. 6.6.1.2 Connection Status Register (offset = 0x08) [reset = 0x00]
        3. 6.6.1.3 Connection Status and Control Register (offset = 0x09) [reset = 0x20]
        4. 6.6.1.4 General Control Register (offset = 0x0A) [reset = 0x00]
        5. 6.6.1.5 Device Revision Register (offset = 0xA0) [reset = 0x02]
  7. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 DRP in I2C Mode
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curves
      2. 7.2.2 DFP in I2C Mode
        1. 7.2.2.1 Design Requirements
        2. 7.2.2.2 Detailed Design Procedure
        3. 7.2.2.3 Application Curves
      3. 7.2.3 UFP in I2C Mode
        1. 7.2.3.1 Design Requirements
        2. 7.2.3.2 Detailed Design Procedure
        3. 7.2.3.3 Application Curves
    3. 7.3 Initialization Set Up
  8. 8 Layout
    1. 8.1 Layout Guidelines
    2. 8.2 Layout Example
  9. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Community Resources
    4. 9.4 Trademarks
  10. 10Mechanical, Packaging, and Orderable Information

6.1 Overview

The USB Type-C ecosystem operates around a small form factor connector and cable that is flippable and reversible. Due to the nature of the connector, a scheme is required to determine the connector orientation. Additional schemes are required to determine when a USB port is attached and the acting role of the USB port (DFP, UFP, DRP), as well as to communicate Type-C current capabilities. These schemes are implemented over the CC pins according to the USB Type-C specifications. The TUSB322I device provides Configuration Channel (CC) logic for determining USB port attach and detach, role detection, cable orientation, and Type-C current mode. The TUSB322I device also contains several features such as VCONN sourcing, USB3.1 mux direction control, mode configuration, and low standby current, all of which make the TUSB322I device ideal for source or sinks in USB2.0 or USB3.1 applications.