【摘要】 利用PCI9054通用PCI控制器设计了一个基于PCI总线的数据传输板,采用CPLD实现了采集卡本地总线的数据读取和控制时序,双口RAM被用作数据缓存进行乒乓操作,同时编写了Linux下的驱动程序,实现了通过PCI总线进行数据采集的功能。更多还原

【Abstract】 In this paper a PCI data transfer card is designed for synthetic aperture sonar(SAS) data acquisition,PCI9054 is used to bridge the local bus and PC104 plus and provide a high speed DMA channel,CPLD is used to implement tar- get read logic of local bus,dual port RAM is used to buffer the A/D data.Device driver under Linux for the card is tai- lored to meet the requirement of data acquisition.At last our design is verified by experiments,the actual transfer speed reaches 50MB/s.更多还原