Description
Due to a problem in the Intel® Quartus® Prime Pro Edition Software version 22.3 and earlier, you might see itx_underflow asserted in an F-Tile Interlaken Intel® FPGA IP single-segment design. It will cause the Physical Medium Attachment (PMA) to lose lock.
Resolution
When the error occurs, you need to reset both the F-Tile Interlaken Intel® FPGA IP and the transceiver to re-establish the link.
This problem has been fixed in the Intel® Quartus® Prime Pro Edition Software version 22.4.