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Altera_Forum
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13 years ago

Preserving WYSIWYG LUT input assignments

I am working on a Stratix III design in which I need to very precisely control delay paths on some outputs from my design. In a previous version of my design, I hand instantiated WYSIWYG cells and u...
Altera_Forum's avatar
Altera_Forum
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13 years ago

Oh, and depending how you do timing constraints, note that you won't get 100ps variation. Stratix III models on-die variation, so the exact same path in the same corner has a "fast" and "slow" sub-model. So if you use timing constraints like setup and hold, or skew, you'll see a lot more variation. It's not that it's necessarily larger in hardware, but Stratix I didn't model that.