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Altera_Forum
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14 years ago

Setup Hold times for Cyclone IV Flops

Hi All, I have looked in Cyclone IV Handbook and did not find T'su or T'hold for the flops. Is this info available somewhere? Can I safely assume t'hold to be zero? I am also trying to ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Hi kaz,

This won't synthesize...

As a further precaution, I am re-timing both incoming data streams to 2x clk, when the 'enable' is high. This allows me to avoid sampling data on clk1x, while it is about to change.