Device Family: Arria® II GX

Device Family: Arria® II GZ

Device Family: Arria® V GT

Device Family: Arria® V GX

Device Family: Arria® V GZ

Device Family: Arria® V ST

Device Family: Arria® V SX

Device Family: Stratix® III

Device Family: Stratix® IV E

Device Family: Stratix® IV GT

Device Family: Stratix® IV GX

Device Family: Stratix® V E

Device Family: Stratix® V GS

Device Family: Stratix® V GT

Device Family: Stratix® V GX

Device Family: HardCopy III

Type: Answers

Area: EMIF

Area: Intellectual Property


IP Product: RLDRAM II Controller with UniPHY

Why does my project with a RLDRAM or QDR interface stall in the fitter?

Description

Due to a problem in the Quartus® II software, the compilation may never finish during the fitter stage if you let the Quartus II software auto-place the pins. This issue is caused by the fitter placing multiple strobe pins or data mask (DM) pins from different interfaces into the same x4 DQ/DQS group when using RLDRAM II, RLDRAM III, QDR or QDR II/+.

Workaround/Fix

To work around this issue, manually place the strobe pins and DM pins into different x4 DQ/DQS groups.

This issue has been fixed in the Quartus II software version 13.0.