Why might my 50G Ethernet IP Core lose word lock? - Why might my 50G Ethernet IP Core lose word lock? Description Due to a problem in the Quartus® Prime software version 17.0 and earlier, the 50G Ethernet IP core will lose word lock after receiving 16 incorrect frame headers in a window length of 64 frame headers. The Ethernet specification states that this should only happen after 65 incorrect frame headers in a window length of 1024 frame headers. Resolution This problem is scheduled to be fixed in a future release of the Quartus Prime software. Custom Fields values: ['novalue'] Troubleshooting FB: 420044; True ['25G 50G Ethernet'] ['FPGA Dev Tools Quartus® Prime Software Pro'] novalue 16.0 ['Arria® 10 GT FPGA'] ['novalue'] ['novalue'] ['novalue']