摘要
以提高可靠性为目标,研究芯片自愈型硬件细胞阵列布局的新结构和新方法。针对传统可靠性模型无法体现细胞内部模块随布局结构动态变化的不足,通过细胞单元电路资源消耗分析,面向二维阵列结构进行了新的可靠性建模。根据新模型,在分析布局结构参数对可靠性影响程度的基础上,提出了一种先分块再分层的细胞布局新结构。用实例验证了新布局结构对可靠性提高的有效性,给出了不同设计任务和细胞电路设计方法情况下确定最佳布局方式的计算方法,并总结出了新布局结构中分块、分层参数选择规律,最终论证了最佳布局方式计算方法和参数选择规律的一般适用性。
For the purpose of improving reliability,a new structure and some new methods are raised in this article by array layout reformation.The traditional reliability model assumes that all cells are treated as fixed nodes,which is inconsistent with the implementation process.Actually,the inner modules of cell should always change with the layout of cellular array dynamically.The new reliability model is proposed after the detailed analysis of unit circuit resource consumption on two-dimensional array.The influence of layout parameters is analyzed in detail.Furthermore,block and hierarchical structure is proposed.The effectiveness to improve the reliability is demonstrated based on a case study.As a conclusion,designers can get the optimal layout conformation with different cell circuit situations and design modus.The parameter selection rules of block and hierarchical structure are summed up,and the general applicability of the methods,which are used to calculate the best layout structure are validated finally.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2014年第12期3392-3402,共11页
Acta Aeronautica et Astronautica Sinica
基金
国家自然科学基金(61202001)~~
关键词
芯片自愈型硬件
可靠性
细胞阵列
布局结构优化
可重构
设计准则
chip self-healing hardware
reliability
cellular array
layout structure optimization
reconfigurable
design guidelines
