组合逻辑电路的软错误率自动分析平台

为在设计阶段快速评估集成电路的软错误率,以指导高可靠集成电路的设计,提出一种适用于组合逻辑电路和时序逻辑电路组合逻辑部分的快速软错误率自动分析平台HSECT-ANLY.采用精确的屏蔽概率计算模型来分析软错误脉冲在电路中的传播;用向量传播和状态概率传播的方法来克服重汇聚路径的影响,以提高分析速度;使用LL(k)语法分析技术自动解析Verilog网表,使分析过程自动化,且使得本平台可分析时序电路的组合逻辑部分.开发工作针对综合后Verilog网表和通用的标准单元库完成,使得HSECT-ANLY的实用性更强.对ISCAS'85和ISCAS'89 Benchmark电路进行分析实验的结果表明:文中方法取得了与同类文献相似的结果,且速度更快,适用电路类型更多,可自动分析电路的软错误率并指导高可靠集成电路的设计.

An Automated Soft Error Rate Analysis Platform for Combinational Logic Circuits

A novel SER analysis platform,called HSECT-ANLY,was developed to rapidly calculate the soft error rate (SER) of integrated circuits for the design of high reliable integrated circuits.HSECT-ANLY is suitable for the automated SER analysis of both the pure combinational logic circuits and the combinational part of sequential logic circuit.It uses accurate masking probability model to characterize the propagating of soft error glitches and uses input vector propagating and state probability propagating technique to overcome the deficiency of reconvergent paths with considerable speed gains.LL(k) syntax analysis technique is employed to parse the Verilog netlist to automate the analysis process and make the combinational part of sequential logic circuit analyzable.The platform was developed based on synthesized Verilog netlist and common standard cell library,which made it more practical than the other tools.By using HSECT-ANLY,experiments were carried out on ISCAS'85 and ISCAS'89 benchmark circuits and comparable results to the previous works were got with faster speed and more applicable circuit types.Experimental results show that the technique is appropriate to analyze the SER of module circuits and to direct the design of high reliability integrated circuits.