说明：  本文主要解决在VXI总线模块上实现大容量动态存储器的技术难题，介绍了利用可编程逻辑器件实现数字信号处理器（DSP）与同步动态存储器（SDRAM）之间的数据读取逻辑的设计、编程思想，以及必要的硬件连接，编程方法等。
(this paper to resolve the VXIbus module to achieve dynamic memory capacity of technical difficulties, introduced to the use of programmable logic devices digital signal processor (DSP) and synchronous dynamic RAM (SDRAM ) reading of data between logic design, programming ideas, and the necessary connecting hardware, programming methods.)