Forum Discussion
Hi Xiao,
Both Avalon ST and Avalon MM interface are not supported Gen3/4 x 4 at the End Point. The PCIe Controllers X4 is only available in Root Port mode.
Please refer to table 6 in the following link for the configuration modes supported by the P-Tile Avalon-MM IP for PCIe.
https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_ptile_pcie_avmm.pdf
Regards -SK
Hi,
Thanks for the information. Dose it mean the two X4 cores in the P-Tile can not be configured into EP mode? Where is the limitation coming from? It looks like this limitation is also applying for the PCIe Gen5 interface in later Agilex-I R-Tile?
The document shows the Quartus tool will support user to configure the "bifurcation mux" in future version. When will it be available?
I do not see the answer if it is possible to configure one core in EP mode and other one in RP mode? Since the Avalon-MM bridge is built in user fabric, it should not be a problem to support mixed EP and RP modes.
Thanks,
Xiao