126.96.36.199. Clock Frequencies
Use the SCOPE window to set global frequency requirements for the entire design and individual clock settings. Use the Clocks tab in the SCOPE window to specify frequency (or period), rise times, fall times, duty cycle, and other settings. Assigning individual clock settings, rather than over‑constraining the global frequency, helps the Intel® Quartus® Prime software and the Synplify software achieve the fastest clock frequency for the overall design. The define_clock attribute assigns clock constraints.
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