SNLA433 august   2023 DS320PR1601 , DS320PR410 , DS320PR810 , SN75LVPE5412 , SN75LVPE5421

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Device Overview
    1. 2.1 Receiver Equalization
    2. 2.2 Redriver Linearity
    3. 2.3 PCIe Links with Linear Redrivers
    4. 2.4 Redriver EQ Tuning
      1. 2.4.1 Detailed Description of Parameters Calibration
  6. 3General Guidelines for Optimal CTLE and Gain Selection
  7. 4Summary
  8. 5References

Abstract

PCI-Express (or PCIe) 5.0 links provide an overall loss budget of 36 dB at 16 GHz. Unsurprisingly, many systems have PCIe links that exceed the loss budget, imperfect implementations that reduce the available loss budget, or both. TI PCIe Gen5 redrivers with integrated signal conditioning can reduce deterministic jitter caused by channel losses, increase the loss budget, and ultimately increase the reach of PCIe 5.0 links by up to 45%. This application note provides guidance on using the DS320PR810 and DS320PR1601 for better signal integrity and reach extension. It is also applicable for related devices such as the SN75LVPE5421 and SN75LVPE5412 with integrated multiplexers and demultiplexers, respectively.