ZHCSM72 June   2021 TUSB217A

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Device Comparison
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Switching Characteristics
    7. 7.7 Timing Requirements
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 High-Speed Boost
      2. 8.3.2 RX Sensitivity
    4. 8.4 Device Functional Modes
      1. 8.4.1 Low-Speed (LS) Mode
      2. 8.4.2 Full-Speed (FS) Mode
      3. 8.4.3 High-Speed (HS) Mode
      4. 8.4.4 High-Speed Downstream Port Electrical Compliance Test Mode
      5. 8.4.5 Shutdown Mode
      6. 8.4.6 I2C Mode
      7. 8.4.7 BC 1.2 Battery Charging Controller
    5. 8.5 TUSB217A Registers
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Test Procedure to Construct USB High-speed Eye Diagram
          1. 9.2.2.1.1 For a Host Side Application
          2. 9.2.2.1.2 For a Device Side Application
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 接收文档更新通知
    2. 12.2 支持资源
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 术语表
  13. 13Mechanical, Packaging, and Orderable Information

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机械数据 (封装 | 引脚)
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9.2 Typical Application

A typical application for TUSB217A with dynamic mode change between DCP and CDP is shown in Figure 9-1. BC 1.2 controller mode will be based on host/hub active state in this application. When host/hub is not active the controller will be in DCP mode and when the host/hub is active the controller will be in CDP mode. Downstream VBUS needs to be toggled by the power controller to change advertisement and for portable device to re-detect the BC 1.2 controller charging mode. In this setup, D2P and D2M face the USB connector while D1P and D1M face the USB host. The orientation may be reversed (that is, D2 faces transceiver and D1 faces connector).

Figure 9-1 TUSB217A: A Reference Schematic (Design Example with DCP/CDP Dynamic Switching). Downstream VBUS Needs to be Toggled if Upstream VBUS State Changes for BC 1.2 Controller to Change DCP/CDP Advertisement.
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