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Intel: Does Arria® V GX support PCI-Express Lane Reversal feature? Also, does it support Gen2 x2 configurations?
Category: PCI-Express
Tools: Quartus® Prime
Device: Arria® V
yes. Arria® V devices support Lane Reversal.
(reference)
Arria V Avalon-MM Interface for PCIe Solutions User Guide
https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_a5_pcie_avmm.pdf (see Physical Layer and Lane Initialization and Reversal sections)
Also, Avalon-ST supports Gen2 x2, but Avalon-MM does not.
(reference)
Intel® FPGA IP for PCI Express*
https://www.intel.com/content/www/us/en/programmable/products/intellectual-property/ip/interface-protocols/m-pci-express-protocol.html#device-support
(see Device support tab)
It is possible to generate the IP in a x4 configuration and use it as x2 on the downlink.
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