Critical Issue
Description
The Quartus II software may fail to place the mimic path correctly. The report timing script then indicates a timing setup failure on the mimic path.
This issue affects all designs.
Your design may fail.
Resolution
Manually edit the following parameter in the auto-generated Synopsys design constraint (.sdc) script to correct the timing analysis:
mimic_shift
Add a value of at least the worst case failed slack to the value already stated in the Synopsis design constraint file.
This issue will be fixed in a future version of the DDR and DDR2 SDRAM Controllers with ALTMEMPHY IP.