Article ID: 000073645 Content Type: Error Messages Last Reviewed: 11/04/2019

Critical Warning(19536): Report Metastability (Slow 850mV -40C Model): Found # synchronizer chains, 1 with unsafe MTBF

Environment

  • Intel® Quartus® Prime Pro Edition
  • JESD204B Intel® FPGA IP
  • BUILT IN - ARTICLE INTRO SECOND COMPONENT
    Description

    You may see the above Critical Warning message or similar in Intel® Quartus® Prime Pro Edition software versions 19.3 and earlier when compiling a design targeting an industrial grade Intel® Stratix® 10 device which instances the JESD204B Intel FPGA IP or JESD204C Intel FPGA IP. This is because these IP only use two registers in a synchronizer chain which might have an unsafe Mean Time between Failure (MTBF) when it follows an asynchronous transfer. The recommended metastability synchronizer chain length for Intel® Stratix® 10 devices is three.

    Resolution

    This problem is scheduled to be fixed in a future version of the Intel® Quartus® Prime Pro Edition software.

    Related Products

    This article applies to 1 products

    Intel® Stratix® 10 FPGAs and SoC FPGAs