For DDR2 and DDR3 SDRAM Controller with UniPHY, SOPC Builder Designs Suffer Low Efficiency

Description

If you use SOPC Builder to instantiate a DDR2 or DDR3 SDRAM Controller with UniPHY IP core, you may find your design has low memory efficiency.

Resolution

To work around this issue, use the MegaWizard Plug-In flow to instantiate a DDR2 or DDR3 SDRAM Controller with UniPHY IP core.