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AR# 37835

12.2 MAP - MMCM calibration circuit not included when global optimization is turned on


In 12.2 MAP, when global optimization is turned on, the MMCM calibration circuit is not automatically inserted.


This is a known issue and it is currently under investigation. A workaround or solution will be posted once it is identified.

One workaround is to instantiate the macro manually. If you instantiate the macro manually, the user should not turn off global optimization.

So the recommendation is if you are using global optimization, you must manually insert the MMCM calibration circuit.

But if you are not using the global optimization, you must not manually insert the circuit.

For more information on the macro, see (Xilinx Answer 33849).
AR# 37835
Date Created 09/02/2010
Last Updated 10/11/2010
Status Active
Type General Article
  • Virtex-6 CXT
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  • ISE Design Suite - 12.2