SNLA435A September   2023  – January 2024 DS320PR1601 , DS320PR410 , DS320PR810

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Device Overview
  6. 3Intention of Eye Scan
    1. 3.1 An Introduction to Lane Margining
    2. 3.2 How Does Eye Scan Work?
    3. 3.3 Programming Steps for Manual Eye Scan Capture
    4. 3.4 Eye Scan Capture Registers
    5. 3.5 CTLE Sweep Result
    6. 3.6 Eye Scan DAC Range
  7. 4Eye Scan Applications
    1. 4.1 Eye Scan Application: PCIe Compliance
    2. 4.2 Eye Scan Application: System
  8. 5Eye Scan in SigCon Architect GUI
  9. 6Summary
  10. 7References
  11. 8Revision History

6 Summary

The Texas Instruments PCIe redriver Eye Scan feature allows for users to gain insight into vertical eye quality at the redriver’s transmitter in multiple application spaces. Eye Scan can be used in assistance with PCIe lane margining tools to select a range of PCIe redriver equalization (EQ) boost settings for their PCIe application, potentially reducing redriver tuning time and effort during PCIe compliance or in PCIe system bring-up and link quality testing. Eye Scan's convenience, low runtime, and non-invasive nature are beneficial when performing PCIe redriver tuning.