21.12.19 Set Multicycle Constraint Dialog Box

Use this dialog box to specify the paths that take multiple clock cycles in the current design.

Setting the multiple-cycle paths constraint overrides the single-cycle timing relationships between sequential elements by specifying the number of cycles that the data path must have for setup or hold checks.

Note: The false path information always takes precedence over multiple cycle path information. A specific maximum delay constraint overrides a general multiple cycle path constraint.

To open the Set Multicycle Constraint dialog box (shown below) from the SmartTime Constraints Editor, choose Actions > Constraint > Multicycle.

Figure 21-100. Set Multicycle Constraint Dialog Box