Device Family: Cyclone® V

Type: Answers, Errata

Area: EMIF, Intellectual Property

DDR3 Quarter-Rate Is Not Supported for Cyclone V Devices


This problem affects DDR3 products.

The user interface incorrectly allows you to select a DDR3 quarter-rate memory interface for a Cyclone V device; however, DDR3 quarter-rate interfaces are not supported for Cyclone V devices.


The workaround for this issue is to not select a quarter-rate DDR3 interface if you are using a Cyclone V device.

This issue will be fixed in a future version.