SLLA613 august   2023 TUSB1146

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Test Description
    1. 2.1 Equalization Configuration
    2. 2.2 Eye Test
    3. 2.3 BER Test
    4. 2.4 Alternative BER Test
  6. 3Test Results
  7. 4Summary
  8. 5References

Abstract

The TUSB1146 USB Redriver features Adaptive Equalization (AEQ), an equalization (EQ) method allowing two communicating devices to have bit error free operation under different system conditions. AEQ improves upon static EQ by automatically configuring the redriver to use an appropriate EQ setting for the various system conditions. The TUSB1146 redriver implements AEQ functionality at the downstream facing port USB Type-C® 3.2 receivers (RX1 and RX2). This application note provides a comparison between AEQ and static EQ, device tests that produce data supporting the use of AEQ, and further recommendation to use AEQ over static EQ in future applications.