Device Family: Arria® II GX

Device Family: Arria® II GZ

Device Family: Arria® V GT

Device Family: Arria® V GX

Device Family: Arria® V ST

Device Family: Arria® V SX

Device Family: Cyclone® II

Device Family: Cyclone® III

Device Family: Cyclone® III LS

Device Family: Cyclone® IV E

Device Family: Cyclone® IV GX

Device Family: Stratix® II

Device Family: Stratix® II GX

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

Type: Answers

Area: EMIF

Area: Intellectual Property


IP Product: DDR2 SDRAM Controller supporting ALTMEMPHY

Warning (15946): DQS_INPUT_FREQUENCY parameter of DQS delay chain should be equal to the INPUT_FREQUENCY parameter of DLL

Description

You may see the above warning when compiling an ALTMEMPHY based DDR2 Controller in Arria II GX. The warning is the result of number conversion errors inside the Quartus® II software and can be safely ignored.

Workaround/Fix