Why is there invalid data on the rx_avs interface of Serial Lite IV Intel® FPGA IP on Intel Agilex® 7 devices and Intel® Stratix® 10 devices? - Why is there invalid data on the rx_avs interface of Serial Lite IV Intel® FPGA IP on Intel Agilex® 7 devices and Intel® Stratix® 10 devices? Description Due to a problem in the Intel® Quartus® Prime Pro Edition Software version 21.4 and earlier, you might see invalid data on the rx_avs interface of Serial Lite IV Intel® FPGA IP if you reset its link partner Serial Lite IV Intel® FPGA IP. The following is an example waveform capture for invalid data: rx_avs_data will toggle, containing some random data. rx_avs_valid will toggle, but no sop/eop asserted when rx_avs_valid is high. rx_link_up will go high with unexpected random data and valid indication. rx_error shows a PCS error. Resolution To fix this problem, download and install the following patch: Intel® Quartus® Prime Pro Edition Software v21.4 Patch 0.69 for Linux (quartus-21.4-0.69-linux.run) Intel® Quartus® Prime Pro Edition Software v21.4 Patch 0.69 for windows (quartus-21.4-0.69-windows.exe) Readme for Intel® Quartus® Prime Pro Edition Software v21.4 Patch 0.69 (quartus-21.4-0.69-readme.txt) This problem is scheduled to be fixed in a future release of Intel® Quartus® Prime Pro Edition Software. Custom Fields values: ['novalue'] Troubleshooting 15011298354 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 22.4 21.4 ['Agilex™ 7 FPGAs and SoCs', 'Stratix® 10 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']