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ISSN      1003-9775
CN        11-2925/TP
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在线期刊

考虑预采样的时序错误检测与自恢复方法

郑旭光1), 梁华国1)*, 易茂祥1), 蒋翠云2), 范 磊3), 欧阳一鸣3)
1) (合肥工业大学电子科学与应用物理学院 合肥 230009)2) (合肥工业大学数学学院 合肥 230009) 3) (合肥工业大学计算机与信息学院 合肥 230009)
分类号: 电路老化; 时序错误; 预采样; 时序检测与纠错
出版年,卷(期):页码: 2017 , 29 ( 7 ): 1365-1371 郑旭光
摘要: 集成电路老化效应会导致组合电路关键路径时延增加, 不满足电路时序约束条件, 从而引起时序错误, 使得电路功能失效. 为此, 提出一种基于预采样的时序错误检测与自恢复方法, 并设计了一个检测与纠错结构. 首先利用系统本身时钟在时钟有效沿前后构建一个预采样区间和一个检测区间; 然后在预采样区间内提前捕获输入信号; 最后在检测区间内进行时序错误检测, 如果检测电路发出报警信号, 电路将会进行自纠错. 仿真结果表明, 相比于其他的检测结构, 该结构在检测速度上平均提高了3.6倍; 同时不需要调整时序, 电路就可以实现自纠错与自恢复, 且不会降低电路的工作性能.
关键词:
Considering Pre-Sampling for Timing Errors Detection and Self-Recovery
Zheng Xuguang1), Liang Huaguo1)*, Yi Maoxiang1), Jiang Cuiyun2), Fan Lei3), and Ouyang Yiming3)
1) (School of Electronic Science & Applied Physics, Hefei University of Technology, Hefei 230009) 2) (School of Mathematics, Hefei University of Technology, Hefei 230009) 3) (School of Computer and Information, Hefei University of Technology, Hefei 230009)
abstract: The aging effect of integrated circuit leads to time delay increasing of critical path in combinational circuits, which doesn’t meet the condition of timing constraints, so timing errors appear and cause the circuit failure of function. Therefore, a method of timing error detection and self-recovery based on pre-sampling is proposed, and a structure is also designed. Firstly, an interval of pre-sampling and another interval of detection between the effective clock edges were generated by system clock. Secondly, the input signal was captured earlier in the interval of pre-sampling. Finally, the timing error was detected in the interval of detection, and if the detection circuit sent out warning signal, it would achieve self-correction. The experimental results show that, the speed is significantly improved by 3.6 times on average compared with other structures of detection. Meanwhile, the design achieves self-correction and self-recovery without adjustments of timing sequence, so it will not reduce the performance of circuits.
keyword: aging circuits; timing errors; pre-sampling; timing error detection and correction
 
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