Article ID: 000086448 Content Type: Troubleshooting Last Reviewed: 02/01/2023

Why is the 16550 Compatible UART Intel® FPGA IP not able to transmit and receive characters when operated as loopback mode?

Environment

  • Intel® Quartus® Prime Pro Edition
  • 16550 Compatible UART Intel® FPGA IP
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    Description

    Due to a synthesis issue, the 16550 Compatible UART Intel® FPGA IP is not functioning properly in the Intel® Quartus®  Prime Pro Edition Software version.  It doesn't transmit and receive characters properly. Furthermore, it cannot loopback characters properly when operated in loopback mode.

     

    Resolution

    To work around this problem, follow these steps:

    1. Use Intel® Quartus® Prime Standard Edition Software since the 16550 Compatible UART Intel® FPGA IP functions properly. 
    2. In Intel® Quartus® Prime Pro Edition Software, replace the 16550 Compatible UART Intel® FPGA IP files with the files available in this link.

    This problem is fixed starting with the Intel® Quartus® Prime Pro Edition Software version 17.1

    Related Products

    This article applies to 1 products

    Intel® Arria® 10 SX SoC FPGA