Block Placer Constraints

You use the Constraints tab of the Block Placer form to specify the constraints that you want block placer to use to converge on a solution. The initial values in the Constraints tab are populated from the values specified in the Constraint Manager. You use the Constraints tab to modify the displayed values. However, the values you specify must not conflict with the constraint values in the Constraint Manager. In addition, you can add constraints in this tab.

The Constraints tab has the following sub-tabs

Tab	Description
Soft Block Constraints	The various controls in this tab are as follows: Soft Block Size Constraints Library, Cell Name, and View Name Resize Area Minimum AR and Maximum AR Update All Update Selected Reload Constraints from Constraint Manager
Instance Constraints	The various controls in this tab are as follows: Instance To Instance Edge Distance Instance To Boundary Distance Constraints
Relative Constraints	The various controls in this tab are as follows: Order/Alignment Reference Instance Alignment Side Relative Position Target Instances All Instances

Virtuoso Floorplanner User Guide
Product Version IC23.1, November 2023