基于可编程互联点的FPGA布线故障注入方法

FPGA routing fault injection method based on programmable interconnection points

静态随机访问存储器类型的FPGA在空间中易发生单粒子翻转的现象,会引起布线资源的错误,在地面主要采用故障注入方法进行模拟。现有注入方法不能准确地解决布线故障问题,通过对可编程互联点的解析,创新地提出了改变可编程互联点配置位状态来模拟单粒子翻转对布线资源影响的故障注入方法,并应用此方法对实际电路进行了故障注入测试,成功模拟了布线资源三种故障模式,证明了此注入方法的有效性。同时对造成故障的翻转位统计分析,结果表明开路为布线资源受单粒子翻转影响的主要故障。通过改变可编程互联点配置位状态来模拟单粒子翻转对布线资源影响的故障注入方法对评估布线算法的单粒子翻转容错能力有重要意义。

Static random access memory（SRAM）-based field programmable gate arrays（FPGAs） are extremely sensitive to single event upsets（SEUs） induced by radiation particles in space. The current methods cannot independently inject faults into routing configuration memory to simulate the faults on the ground. In order to make up this limit, the routing faults were injected by modifying the configuration bitstreams of programming interconnection points. Three routing fault modes were simulated successfully by implementing this method in practical circuits. The experiment results show that the main routing fault induced by SEU is open circuit, and the proposed method can significantly improve the SEU fault tolerant capability of routing algorithm.