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AR# 31608

LogiCORE DDS (Direct Digital Synthesizer) Compiler - According to my clock frequency, the output frequency range on page 3 of the GUI is greater than should be allowed

Description

Why does the DDS Compiler allow me to enter an output frequency that is greater than half of my clock frequency?

Solution

This is a known issue with the GUI. The resulting core will not operate correctly if an output frequency greater than one half of the clock frequency (the sample rate) is specified, as it will violate the Nyquist rate.

This GUI issue will be resolved in a future release of DDS Compiler.

AR# 31608
Date Created 09/04/2008
Last Updated 12/15/2012
Status Active
Type General Article