Article ID: 000086593 Content Type: Troubleshooting Last Reviewed: 07/02/2021

Why does my Intel® Agilex™ device GPIO pin not output a low voltage if I assign '0' directly to the GPIO pin?

Environment

  • Intel® Quartus® Prime Pro Edition
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    Description

    Due to a problem in Intel® Quartus® Prime Pro Edition software version 20.2, if you assign '0' or '1' directly to an Intel® Agilex™ FPGA GPIO output pin, it will always output a '1' (high).

    However, it will work properly if you connect a register output to the Intel® Agilex™ FPGA GPIO output pin. 

    Resolution

    The issue has been fixed in Intel® Quartus® Prime Pro Edition software version 21.1 and later. 

    Related Products

    This article applies to 1 products

    Intel® Agilex™ 7 FPGAs and SoC FPGAs

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