SRAM型FPGA在线位流回读技术分析与实现  

Analysis and Implementation of Online Bitstream Readback Technology on SRAM-based FPGA

作　　者：张杰[1] 赵刚[1] 李晓娟[2] 

机构地区：[1]北京化工大学信息科学与技术学院,北京100029 [2]首都师范大学信息工程学院,北京100037

出　　处：《小型微型计算机系统》2014年第6期1216-1220,共5页Journal of Chinese Computer Systems

基　　金：国际科技合作与交流项目(2011DFG13000)资助;北京市自然基金空间总线通信系统形式化验证方法研究项目(4122017)资助

摘　　要：为及时检测出SRAM型FPGA在空间应用时受SEU影响而产生的翻转错误,保证数字系统的高可靠性应用要求,以Xilinx Virtex-II Pro FPGA为例,深入分析了FPGA的配置帧寻址及配置命令发送等配置细节,在此基础上设计并实现了基于内部ICAP接口的位流回读系统.测试结果表明,该系统可在不中断用户功能逻辑的前提下,正确回读FPGA配置内存的当前数据值,从而为及时检测并修复系统故障提供了保证.相比于采用SelectMAP等外部接口的位流回读系统,本系统可进一步节省资源,降低系统整体重量和体积.In order to detect the upset error caused by SEU on SRAM-based FPGA timely and ensure the high reliability of digital systems that using in space applications, the configuration details of Xilinx Virtex-μ Pro FPGA is analyzed in this article, such as the method of addressing configuration frame and sending configuration commands. Based on the analysis, we design and implement a bitstream readback system through ICAP interface. Test results show that the system can readback the data values of the FPGA configuration memory correctly without interrupting the user function logic, and thus provide a guarantee for detecting and repairing system failures in time. Compared with the system that reading back bitstream through external interface like SelectMAP, this system can save more resources and reduce the overall weight and volume.

关 键 词：FPGA容错 SEU效应 高可靠性 位流回读 故障检测 ICAP接口 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]