FPGA在PC-104系统I/O设备扩展中的应用  

Application of FPGA on the extension of I/O device of PC-104 system

作　　者：周鹏[1] 和卫星[1] 匡敏驰[2] 朱纪洪[2] 

机构地区：[1]江苏大学电气信息工程学院,江苏镇江212013 [2]清华大学计算机系,北京100084

出　　处：《工业仪表与自动化装置》2013年第2期50-53,72,共5页Industrial Instrumentation & Automation

摘　　要：PC-104作为系统的核心单元,不仅需要处理大量I/O设备的数据,而且必须确保系统具备良好的实时性。使用FPGA作为协处理器连接各功能模块和PC-104,可分担PC-104的部分工作,从而保证系统的实时性。FPGA作为连接上下的桥梁,担负着数据采集、数据交换等承上启下的工作。该文针对FPGA与PC-104间的数据交换,提出一种根据PC104总线数据传输时序的特性而设计的方案。在搭建的硬件平台上实现了两者间的数据交换,测试结果验证了该方案的可行性。As the core module of the system, PC -104 has to deal with a large amount of data from other I/O devices and ensures the system＇ s good real - time performance. Using FPGA as coprocessor to connect each function modules and the PC - 104, can share part of work of the PC - 104, thereby ensu- ring the real - time quality of the system. As a bridge between function modules and PC - 104, FPGA is responsible for data acquisition, data exchange and other connecting work. Aiming at the data exchange between FPGA and PC - 104, this paper introduces a scheme, which is designed according to the charac- teristics of the PC - 104 bus data transmission timing. The test result about data exchange in the hardware platform proves the feasibility of this scheme.

关 键 词：PC-104 PC104总线 FPGA 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置]