Intel Agilex® 7 General-Purpose I/O User Guide: M-Series

ID 772138
Date 12/04/2023
Public
Document Table of Contents
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2.2.3.3. Guidelines: Programmable De-Emphasis

  • The de-emphasis effect reduces eye height. If you use a non-default de-emphasis setting, perform an IBIS or HSPICE simulation to estimate the electrical performance of the I/O buffer.
  • To get the optimal setting for your design, start the simulation with the lowest de-emphasis setting. From there, fine-tune the setting until you get the best signal integrity.
  • If you use the compensated slew rate setting, de-emphasis is supported only in the following modes:
    • External memory interface
    • PHY Lite