Modified null convention logic pipeline to detect soft errors in both null and data phases
Modified null convention logic pipeline to detect soft errors in both null and data phases
复制标题
修改空约定逻辑管道以检测空阶段和数据阶段的软错误
DOI：
10.1109/mwscas.2012.6292042
复制
发表时间：
2012
期刊：
影响因子：
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通讯作者：
F. Awwad
中科院分区：
文献类型：
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作者：
F. Lodhi;O. Hasan;S. R. Hasan;F. Awwad
软错误引起的毛刺会严重阻碍异步电路的运行。为了减轻准延迟不敏感（QDI）异步电路中的软错误，在NULL约定逻辑（NCL）中引入了内置软错误校正[9]。然而，该技术不能在NCL流水线的NULL阶段检测错误，并且也不能避免错误在其检测之后传播到流水线中。本文提供了一种改进的方法来克服这些限制，平均而言，可比的功率和延迟成本。本文还分析了温度变化对延迟和功耗的影响。改进的NCL流水线在IHP 90 nm CMOS工艺中实现，并在不同的工作温度下进行了分析。据发现，所提出的设计生存以及在最坏的情况下的工作温度，不传播软错误。
Glitches due to soft errors can act as a severe deterrent to asynchronous circuit operations. To mitigate soft errors in quasi delay insensitive (QDI) asynchronous circuits, built-in soft error correction in NULL convention logic (NCL) has been introduced [9]. However, this technique cannot detect errors during the NULL phase of NCL pipeline, and also cannot avoid error propagation into the pipeline after its detection. This paper provides a modified approach to overcome these limitations with, on average, comparable power and latency costs. This work also analyzes the temperature variation effects on latency and power consumption of the proposed design. The modified NCL pipeline is implemented in IHP 90nm CMOS technology and analyzed under various operating temperatures. It is found that the proposed design survives well in the worst case operating temperatures and does not propagate soft errors.