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AR# 37195

14.x Constraints - How do you lock DCM components using LOC constraints?

Description

How do you lock DCM components using LOC constraints?

Solution

For example, there is one DCM instance named _dcm/DCM_SP_INST in the design. There are two ways to lock the DCM location.

  • INST based: LOC whole instance into one location,
    such as: INST "_dcm/DCM_SP_INST" LOC = DCM_X1Y0;
  • PIN based: LOC one pin of instance into one location,
    such as: INST "_dcm/DCM_SP_INST.RST" LOC = DCM_X1Y0;

However, in such type of constraints, it is an error in the PlanAhead tool.

AR# 37195
Date Created 01/16/2013
Last Updated 01/16/2013
Status Active
Type General Article