嵌入式实时图像处理系统中SDRAM控制器的实现  

Implementation of SDRAM Controller for Embedded Real-time Image Processing System

作　　者：王利颖[1] 蒋亚东[1] 罗凤武[1] 

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室,四川成都610054

出　　处：《现代电子技术》2009年第9期137-139,共3页Modern Electronics Technique

基　　金：国家自然科学创新群体基金资助项目(60721001)

摘　　要：介绍一种用于嵌入式实时图像处理系统的SDRAM控制器的实现方案。根据实时系统对数据传输速率及连续性的要求,将SDRAM配置为全页突发操作模式,并采用异步FIFO作为FPGA与SDRAM间的数据缓冲器。为配合SDRAM的全页操作模式,并充分利用其高速读写性能,将FIFO设计为基于乒乓操作的流水线结构,实现了数据的无缝缓存。将该方案用于实时红外热成像系统,经实验结果表明,该SDRAM控制器执行效率高,占用资源少,可移植性强。The implementation of SDRAM controller for embedded real- time image processing system is presented. According to the request of data transmission rate and continuity in real - time system,SDRAM is programmed with full - page burst mode and asynchronous FIFOs are used as data buffer between FPGA and SDRAM. The pipeline architecture based on ping - pong operation, which can achieve seamless temporary store,is introduced to cooperate with the full - page burst mode and make full use of SDRAM＇s high -efficient access property. This method is applied to a real- time infrared thermal imaging system and the result shows that this controller has the features of high executing efficiency, less resources occupation and powerful portability.

关 键 词：SDRAM 控制器 嵌入式 实时系统 

分 类 号：TP343[自动化与计算机技术—计算机系统结构]