Intel® Cyclone® 10 GX Core Fabric and General Purpose I/Os Handbook

ID 683775
Date 10/31/2022
Document Table of Contents LVPECL Termination

The Intel® Cyclone® 10 GX devices support the LVPECL I/O standard on input clock pins only:

  • LVPECL input operation is supported using LVDS input buffers.
  • LVPECL output operation is not supported.
Use AC coupling if the LVPECL common-mode voltage of the output buffer does not match the LVPECL input common-mode voltage.
Note: Intel recommends that you use IBIS models to verify your LVPECL AC/DC-coupled termination.
Figure 86. LVPECL AC-Coupled External Termination

Support for DC-coupled LVPECL is available if the LVPECL output common mode voltage is within the Intel® Cyclone® 10 GX LVPECL input buffer specification.

Figure 87. LVPECL DC-Coupled External Termination

For information about the VICM specification, refer to the device datasheet.

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