Why does my Intel® P-Tile Avalon®-ST for PCI Express* IP RX interface behave differently depending on the reset condition?

Description

The Intel® P-Tile Avalon®-ST for PCI Express* IP implements a deskew module in the FPGA fabric to realign receive side packets coming from Embedded Multi-die Interconnect Bridge (EMIB) interface. The deskew module has a reset problem that could cause misalignment on the Avalon-ST RX interface.

Resolution

This problem is fixed in the Intel® Quartus® Prime Pro Edition software version 20.1.