Design of DDR4 SDRAM controller

Currently, the demand of memories has been increasing due to its higher speed, lower cost and lower power consumption. The complexity of instructions to control the memory devices increases with the increase in technology. DDR4 is the latest generation family of DDR SDRAM. This memory device provides higher reliability, availability and serviceability than other DDR memories. In this paper, the overall architecture of the DDR4 SDRAM controller is proposed. The detailed design and operation of its individual sub blocks is described. Also the advantages of DDR4 over DDR3 SDRAM are discussed.