Step 3: Specify Timing Requirements

To specify the default required fMAX for the filter design, follow these steps:

  1. Choose Timing Settings (Assignments menu). The Timing Settings page of the Settings dialog box appears.

  2. In the Category list, select Clocks under Timing Settings. The Clocks page appears.

  3. Under Specify circuit frequency as, select Default required fmax.

  4. In the Default required fmax box, type 80 and select MHz in the list. This requirement matches the fMAX requirement in the top-level largefilter design.

    5. Show Me
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    Clocks Page (Timing Settings)

  5. Click OK.


To continue the tutorial, proceed to Step 4: Perform Analysis & Synthesis on the Design.