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Honored Contributor
Honored ContributorIOE and delay chain?
Can i have a silly question here? :confused: May i know what is IOE (I/O Elements)? why delay chain (D1,D2,D3,D4) is always related to IOE? What is the IOE role in the FPGA? Thanks, ...
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- They have the I/O drivers (the circuits which let the FPGA interface with TTL, CMOS, LVDS, SSTL, etc external components) and also tend to have some features to improve i/o timing, like dedicated i/o registers and programmable delay chains. --- Quote End --- May i know how the IOE improve the I/O timing? Is it make the delay chain (D1-Dn) either longer or shorter? the delay decide the hong long the data/signal will stay in the I/O pin? what is the purpose of doing this?
