PXI仪器总线控制器的设计与实现  

Design and Implementation of PXI Bus Controller

作　　者：孟劲松[1] 林建辉[1] 杨东[2] 华渊[2] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031 [2]成都华太测控技术有限公司,四川成都611731

出　　处：《仪表技术与传感器》2009年第2期80-82,99,共4页Instrument Technique and Sensor

摘　　要：仪器的总线与控制技术的关键在于总线控制器和总线桥。对于长时间连续高速采集记录应用的PXI总线仪器,其总线控制器必须具有DMA传输功能。分析了总线DMA控制器的运行机制,在FPGA器件上采用Verilog HDL设计了PXI总线DMA控制器core.在不同的PXI平台上进行测试,动态调整DMA的配置参数,得到既能满足高速传输又能保证系统健壮性的软硬件配置参数。测试和应用表明,该参数下的PXI测量仪器能够满足大多数的测量测试应用。The key factor to the instrument control technologies is the bus controllers and the bus bridges. The PXI bus controller with DMA function is the only way for PXI instrumentation to meet the long-playing mass data acquisition and recording requirement. The bus DMA controller core in Verilog HDL was designed into the FPGA based on the analysis of bus DMA scheme. The method to test DMA core performance via dynamic adjusting configuration parameter to meet the requirement of both the transmission at high speed and the instrumentation robustness was presented. The results of testing and applying on different PXI platform show that this PXI bus controller with DMA core whose configuration parameters are ultimately adjusted, it can meet the most test needs.

关 键 词：PXI 总线控制器 DMA控制器 FPGA 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置] TP336[自动化与计算机技术—控制科学与工程]