Abstract:

The basic working characteristics and timing analysis of DDR SDRAM are studied,and a universal DDR SDRAM controller based on FPGA is designed.The design function simulation is performed under Modelsim,and testing and verification of the hardware are also completed under the FPGA.Simulation results show that the controller can realize read-write control over DDR SDRAM with high read-write efficiency and simple interface circuit.

Key words: DDR SDRAM;controller;field programmable gate array (FPGA)