深入探讨SDRAM的工作原理和工作时序，通过SDRAM三种常用寻址方式的对比，设计一种基于FPGA的页快速命中寻址的16位SDRAM控制器。软件仿真、硬件测试及实物调试结果表明：该控制器能极大地缩短寻址时间，并具有良好的实时性、高效性和模块重用性；同时也节省了FPGA的内部资源，缩短了研发周期。%In this paper,working principle and time sequence analysis of SDRAM are discussed deeply. By comparing three common addressing modes,a 16⁃bit SDRAM controller of page fast hitting based on FPGA was designed. Results of soft⁃ware simulation,hardware test and practical debug show that the controller can shorten addressing time greatly. The controller has good real⁃time performance,high efficiency and module reusability. It also can save internal resources in FPGA and reduce development cycle.
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