Why does an underflow error occur on the transmitter path for the F-Tile Interlaken Intel® FPGA IP with a single segment design?

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.