SLASEP7A May   2020  – May 2022 TMUXHS4212

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 High-Speed Performance Parameters
    7. 6.7 Switching Characteristics
    8. 6.8 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Output Enable and Power Savings
      2. 8.3.2 Data Line Biasing
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 USB 3.2 Implementation for USB Type-C
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curves
      2. 9.2.2 PCIe Lane Muxing
        1. 9.2.2.1 Application Curves
    3. 9.3 Systems Examples
      1. 9.3.1 USB/eSATA
      2. 9.3.2 MIPI Camera Serial Interface
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Support Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

9.2.2 PCIe Lane Muxing

The TMUXHS4212 can be used to switch PCIe lanes between two slots. In many PC and server motherboards, the CPU does not have enough PCIe lanes to provide desired system flexibility for end customers. In such applications, the TMUXHS4212 can be used to switch PCIe TX and RX lanes between two slots. Figure 9-7 provides a schematic where eight TMUXHS4212 devices are used to switch eight PCIe TX and eight RX lanes. Note: the common mode voltage (CMV) bias for the TMUXHS4212 must be within the range of 0 – 1.8 V. In implementations where receiver CMV bias of a PCIe root complex or an end point can not be ensured within the CMV range, additional DC blocking capacitors and appropriate CMV biasing must be implemented.

GUID-CC3F3C2D-7058-43E5-A192-02F479B765C2-low.gif Figure 9-7 PCIe Lane Muxing