SLLA656 November   2024 TUSB1021-Q1 , TUSB521-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2TUSB521-Q1 Equalization Selection
  6. 3TUSB1021-Q1 Equalization Selection
  7. 4TUSB521-Q1 Placement Example
  8. 5TUSB521-Q1 Configuration Example
  9. 6Layout Guidelines
    1. 6.1 Ground Stitching
    2. 6.2 AC Coupling and Resistor Placement
  10. 7Summary
  11. 8References

Abstract

The TUSB521-Q1 and TUSB1021-Q1 are automotive USB3.1 redrivers capable of multiplexing USB3 signals at data rates of 5Gbps and 10Gbps in respect to the devices as the redrivers are listed. In particular, these devices excel in applications which use a USB Type-C interface for communicating between host and device. USB signal amplitudes attenuate through a typical FR4 channel, placing limitations on system trace length at 5Gbps, 10Gbps, and even higher data rates. A longer channel with large attenuation results in signal integrity issues at a USB receiver. This document includes how using the TUSB521-Q1 and the TUSB1021-Q1 can be used at 5Gbps and 10Gbps respectively to help improve these signals to make sure the signals maintain integrity while still being able to pass standard compliance testing.