Device Family: Arria® II GX

Device Family: Arria® II GZ

Device Family: Cyclone® III

Device Family: Cyclone® III LS

Device Family: Cyclone® IV E

Device Family: Cyclone® IV GX

Device Family: Stratix® III

Device Family: Stratix® IV E

Device Family: Stratix® IV GT

Device Family: Stratix® IV GX

Type: Answers

Area: EMIF

Area: Intellectual Property


IP Product: DDR2 SDRAM Controller supporting ALTMEMPHY

Critical Warning (10169): Verilog HDL warning at alt_mem_ddrx_controller.v(495): the port and data declarations for array port "afi_rrank" & "afi_wrank" do not specify the same range for each dimension

Description

You may see this critical warning when implementing a DDR2 SDRAM interface using DDR2 SDRAM High Performance Controller II with ALTMEMPHY IP version 12.0. There is a mismatch with the afi_rrank and afi_wrank port size declarations due to parameter not being passed in correctly. However, it will not affect the functionality because afi_rrank and afi_wrank are not used in the DDR2 controller.

Workaround/Fix

This problem was fixed with the Quartus II software version 12.1 and later.