Forum Discussion
Altera_Forum
Honored Contributor
Honored ContributorAccessing HPS Pins
Hello, I know I can route HPS pins to the FPGA side but is it possible to do the opposite, route FPGA side logic to HPS part pins? Thank you
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- This is not actually a tool issue, the I/O used by the HPS are physically different than the ones on the FPGA side of the Cyclone/Arria V SoC device. --- Quote End --- I see your point about the I/O not being general-purpose FPGA I/O. But given that the I/O that I am loaning to the fabric are in fact used to implement an RGMII to the HPS MAC, then it's clear that the I/O themselves are capable of implementing a DDR function, and I don't see why I shouldn't be able to, via some constraint magic, be able to configure them and use them as such from the FPGA fabric. This is what I mean by a "tool issue"; the silicon is clearly capable of implementing the function that I need.
