PET 系统中基于 CPCI 总线配置FPGA 的设计与实现

摘要

PET Nuclear Electronics System works in radiation environment , and often need different working modes by replacing the FPGA program , using a computer and a control chip , and based on the CPCI bus , a FPGA online configuration system is realized .The Xilinx company's Spartan3AN series FPGA is used as the control chip , with the use of configuration patterns , the system detailed design is given from hardware to soft-ware.The practice shows that the method is easy to implement with low cost , it not only improves the working performance of the system , and also greatly improves the system hardware functional flexibility .%针对PET核电子学系统工作在辐射环境中，而且常常需要根据不同工作模式更换FPGA程序的问题，提出一种利用计算机和控制芯片，并基于CPCI总线来实现FPGA在线配置的系统。设计中以Xilinx公司的Spartan3AN系列FPGA为控制芯片，结合常用的配置模式，从硬件到软件，给出了该系统的具体设计。实践表明此方法易于实现，成本较低，不仅改善了系统的工作性能，而且极大地提高了系统硬件功能的灵活性。