Why does mem_cke signal toggle when I assert local_self_rfsh_req signal on DDR3 SDRAM UniPHY based memory controller? - Why does mem_cke signal toggle when I assert local_self_rfsh_req signal on DDR3 SDRAM UniPHY based memory controller? Description When you assert local_self_rfsh_req on DDR3 SDRAM UniPHY based memory controller, you will notice mem_cke does not deassert, but it is pulsing like a clock signal. Resolution You will have to make a change in {instance_name}_controller_phy.sv file generated by the IP. Scroll to l ine 448 and change .MEM_IF_CKE_WIDTH ( MEM_IF_CKE_WIDTH ), To .MEM_IF_CKE_WIDTH ( MEM_IF_CLK_EN_WIDTH ), This issue will be fixed in a future version of the Quartus® II software. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 11.0.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']