Device Family: Stratix® V

Type: Answers, Errata

Area: EMIF, Intellectual Property



Calibration Fails for QDR II/II+ Designs Targeting Stratix V Devices

Description

Half-rate QDR II/II+ designs using the Nios II sequencer at speeds below 300 MHz may experience calibration failures when targeting Stratix V devices.

This issue will be fixed in a future version of the QDR II and QDR II+ SRAM Controller with UniPHY.

Workaround/Fix

The workaround for this issue is to run half-rate QDR II/II+ designs using the Nios II sequencer targeting Stratix V devices at speeds faster than 300 MHz.