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Honored Contributor
Honored ContributorPCIe TAGs
Hello all. I can't understand how to use TAGs in PCIe. I have a memory papped registers. When I read "read requect" I'm replay with competition with same TAG. When I need a write some data to ...
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- (3) When you send a memory read request, you need to make sure there are no outstanding requests marked with the same tag. That is, you can not reuse a tag from a memory read request until you have received the memory read response for that request. --- Quote End --- The tags in different for request from PC and from PCIe device? En example: I replay for memory read request from PC with tag 5. I can send memory read from PCIe device to PC with tag 5 too?
