ZHCSUX9 February   2024 TMUXHS4446

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Pin Configuration and Functions
  6. 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 High-Speed Performance Parameters
    7. 5.7 Switching Characteristics
    8. 5.8 I2C Timing Characteristics
    9. 5.9 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 High-Speed Differential Signal Switching
      2. 6.3.2 Low-Speed SBU Signal Switching
      3. 6.3.3 GPIO and I2C Control Modes
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application: USB-C with DP Alternate Mode - Source
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 接收文档更新通知
    4. 8.4 支持资源
    5. 8.5 Trademarks
    6. 8.6 静电放电警告
    7. 8.7 术语表
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

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6.3.3 GPIO and I2C Control Modes

The TMUXHS4446 can toggle between GPIO and I2C control modes through the MODE0 pin being driven high or low. When set to GPIO mode (MODE0 = low), the CONF[2:0] pins are driven either high or low to set the switch configurations. When set to I2C mode (MODE0 = high), an external I2C controller (for example, a PD controller) writes into the TMUXHS4446 register bits through the SDA and SCL pins to set mux configurations and device control.

The MODE1 pin is used to control the logic level of the I2C data. If MODE1 is high, then the logic level is 3.3V and 1.8V if MODE1 is low.