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Altera_Forum
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16 years ago

Instantiate primitive DFF with an an inverted clock input

Could anybody tell me how to instantiate primitive DFF with an an inverted clock input in Quartus-II as attached inst11? When I right click the DFF in the schematic/block editor of Quartus-II, its Pr...
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Altera_Forum
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16 years ago

Thanks, FvM.

If I can't instantiate the DFF with an inverted clock, I have to do this way or implement it using the dff mega-core. However, doing that way will introduce extra clock delay or clock skew as mentioned many times in Altera's documnetations or other documentations. The attached diagram is extracted from "Timing Analysis of Internally Generated Clocks in Timequest" by kwalt in the Altera Forum. I don't know how he managed this with Quartus-II. Cheers.