Article ID: 000079900 Content Type: Troubleshooting Last Reviewed: 04/05/2023

Can I connect unused GXB_REFCLK pins directly to GND in Cyclone® V GX devices?

Environment

  • Quartus® II Subscription Edition
    • BUILT IN - ARTICLE INTRO SECOND COMPONENT
    Description

    Yes, you can connect unused GXB_REFCLK pins directly to GND in Cyclone® V GX. This is indicated in the Cyclone® V Pin Connection Guidelines. However, a Quartus® II generated .pin file for this family indicates that an unused GXB_REFCLK pin should be connected to GXB_GND* (pulldown via a 10K ohm resistor). 

    Resolution

    This is a bug in the Quartus® II software and will be fixed in a future release.

     

     

    Related Products

    This article applies to 2 products

    Cyclone® V GX FPGA
    Cyclone® V FPGAs and SoC FPGAs

    Need more help?

    Contact support

    Disclaimer

    1

    All postings and use of the content on this site are subject to Intel.com Terms of Use.