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Altera_Forum's avatar
Altera_Forum
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13 years ago

IOE 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_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Setup violations are caused by excess delay, so I don't see how the delays can help with setup violations.

The delays are automatically set by the tool as needed, when you have proper I/O constrains.

They can also be controlled by user logic, if you have an application where you need to dynamically adjust them.