Why are TLPs being lost when using the R-Tile Avalon® Streaming Intel® FPGA IP for PCI Express?

Description

Due to a problem in the Intel® Quartus® Prime Pro Edition Software v21.2, the R-Tile Avalon® Streaming Intel® FPGA IP for PCI Express may fail to capture the pX_tx_st_eop_i signal assertion from the application logic at the Avalon® Streaming TX interface.

As a result, the R-Tile Avalon® Streaming Intel® FPGA IP for PCI Express will drop the Avalon® Streaming packet and will not generate the corresponding Transaction Layer Packet (TLP).

The following Avalon® Streaming packet delivered to the Avalon® Streaming TX interface may not be affected by this problem.

Resolution

This problem is fixed starting with the Intel® Quartus® Prime Pro Edition Software v21.3.