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

6.4.1 Unattached Mode

Unattached mode is the primary mode of operation for the TUSB322I device, because a USB port can be unattached for a lengthy period of time. In unattached mode, VDD is available, and all IOs and I2C are operational. After the TUSB322I device is powered up, the part enters unattached mode until a successful attach has been determined. Initially, right after power up, the TUSB322I device comes up as an Unattached.SNK. The TUSB322I device toggles between the UFP and the DFP if configured as a DRP.