Type: Answers, Errata

Area: EMIF, Intellectual Property

Simulation Fails for Memory Additive CAS Latency Settings > 0


For DDR2 or DDR3 with UniPHY designs created with a version of the high-performance controller II (HPC II) earlier than 11.0, choosing a value greater than zero for the Memory additive CAS latency option on the Memory Parameters tab in the parameter editor may cause the design to fail in simulation.


The workaround for this issue is to add the MEM_ADD_LAT parameter to the dut.v� wrapper file that instantiates the controller wrapper (alt_mem_if_ddr*_controller_top.sv), so that MEM_ADDLAT is passed down to the� controller wrapper.