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Altera_Forum
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9 years ago

about time quest constraints

Hi to all. I have a little question. I have cyclonevgt dev board. I have to connect a D/A converter to pins of fpga. I create a PLL clock out 100Mhz, routed at a pin of fpga. I create a...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

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Hi GooGooCluster!

In my case

  • the clock is generated with a PLL inside the FPGA, and an FPGA output brings it to the DAC.

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max output delay should be set to (+2ns) and min to (-2ns) assuming data and clock arrive at DAC with equal delay