文章摘要
秦利.双口RAM在声信号处理数据接口模块中的应用[J].声学技术,2009,(5):669~672
双口RAM在声信号处理数据接口模块中的应用
Application of dual RAM device in the design of data interface module
投稿时间:2008-07-21  修订日期:2008-11-26
DOI:
中文关键词: VME总线  SHARC处理器  双口RAM  差分接口模块  DC/DC电压转换器
英文关键词: VME bus  SHARC processor  dual RAM  difference interface module  DC/DC voltage convertor
基金项目:
作者单位E-mail
秦利 杭州应用声学研究所, 杭州, 310012 xiao_xiao517@sohu.com 
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中文摘要:
      介绍了双口RAM器件在数据接口模块的软硬件设计中的应用实例。该模块选用了VME总线方式,主要器件选用了具有强大运算能力的DSP芯片和存储能力极其方便的双口RAM器件,还有差分接口模块和DC/DC电压转换器等。重点介绍了双口RAM CY7C026-25AI的结构特点及其有趣的"乒乓"工作方式,分析了双口RAM与FIFO以及普通存储器的性能差异,对以往SHARC处理器和FIFO芯片的配合方式提出新的观点,即SHARC处理器和双口RAM的组合方式,展示了双口RAM器件在现代数据采集设备中使用的绝对优势。
英文摘要:
      An example of using dual RAM device in the software and hardware design of data interface module is introduced in this paper.The module selects the VME bus,and adopts a DSP chip with powerful operation capability,a dual RAM with easy memory ability,a difference interface module and a DC/DC voltage convertor.The structural features of the dual RAM CY7C026-25AI and its fantastic work method called Ping-Pang are explained.And the differences between the performances of dual RAM,FIFO and some normal memorizers are analyzed.A new concept about the cooperation method between SHARC processor and FIFO chip,that is the Combination Method,is proposed.The absolute advantage of the dual RAM device in the modern data acquisition implementors has been clearly demonstrated.
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