"> AR# 37458: PlanAhead Design Assistant - What are the different types of constraints that can be applied within PlanAhead?

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AR# 37458

PlanAhead Design Assistant - What are the different types of constraints that can be applied within PlanAhead?

Description

PlanAhead has the capability to add several types of constraints. What are these constraints and where can I find more information about them?

Note:This Answer Record is a part of the Xilinx PlanAhead Solution Center(Xilinx Answer 37100). The Xilinx PlanAhead Solution Center is available to address all questions related to PlanAhead. Whether you are starting a new design with PlanAhead or troubleshooting a problem, use the PlanAhead Solution Center to guide you to the right information.

Solution

The standard constraints used for Floorplanning within PlanAhead are logic LOC/BEL placement constraints, I/O LOC constraints, AREA_GROUP placement constraints andDCI_CASCADE constraints.

For more information on the behavior and syntax of these constraints, please see the Constraints Guide.

For more information on applying these constraints within PlanAhead or how to visualize them within PlanAhead, please see the "Defining Physical Constraints" section of Chapter 7 and Chapter 11 of the PlanAhead User Guide.

For information on how to use these constraints to close timing on your design within PlanAhead, see (Xilinx Answer 37457).
AR# 37458
Date Created 08/16/2010
Last Updated 12/15/2012
Status Active
Type General Article