Why I am seeing the following warnings when I try to run RTL simulation using 3rd party DDR3 vendor model in Modelsim? - Why I am seeing the following warnings when I try to run RTL simulation using 3rd party DDR3 vendor model in Modelsim? Description You will see the following warnings when trying to simulate a DDR3 SDRAM UniPHY based controller generated in Quartus II software version prior to 11.1 with vendor memory model: # {hierarchy path}.cmd_task at time 50005156.0 ps WARNING: 500 us is required after RST_N goes inactive before CKE goes active. # {hierarchy path}.reset at time 50027031.0 ps WARNING: 200 us is required before RST_N goes inactive. Resolution This is due to skip and quick calibration option in the megawizard which will not simulate the full required times for initialization and calibration. From Quartus® II software version 11.1 onwards, there is an option for full calibration which will eliminate these warnings. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] 11.1 11.0.1 ['Stratix® V GT FPGA', 'Stratix® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']