Device Family: Arria® V GZ, Stratix® V E, Stratix® V GS, Stratix® V GT, Stratix® V GX

Type: Answers

Area: EMIF, Intellectual Property


IP Product: Stratix V GX Advanced Systems Development Kit

Why is the "Additional CK/CK# phase" option grayed out inside the MegaWizard GUI for the Stratix V device?

Description

The "Additional CK/CK# phase" option is grayed out in the MegaWizard™ GUI because custom phase shifts for the memory clock is not supported for that device and protocol. The Stratix® V and Arria® V GZ devices only support this option for UniPHY-based DDR2 memory controllers with a frequency of 150MHz or above. 

Workaround/Fix