Type: Answers, Errata

Area: EMIF, Intellectual Property



Memory Preset Parameters Do Not get Updated

Description

Some memory presets are changed in version 9.0 of the DDR3 SDRAM high-performance controller. If you migrate your existing design from version 8.1 to 9.0, your memory preset parameters do not get updated in version 9.0.

This issue affects all designs migrated to version 9.0. Your memory preset parameters do not get updated in version 9.0, even if you regenerate the MegaCore function.

Workaround/Fix

In the MegaWizard parameter editor, choose any random memory presets and then reselect your original presets (remember to redo any modifications to the preset such as DQ width, CAS latency, and so on). Click Finish to regenerate the MegaCore function.