Scan Chain Grouping for Mitigating IR-Drop-Induced Test Data Corruption
Scan Chain Grouping for Mitigating IR-Drop-Induced Test Data Corruption
复制标题
用于减轻 IR 压降引起的测试数据损坏的扫描链分组
DOI:
10.1109/ats.2017.37
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Jun Qian
中科院分区:
文献类型:
--
作者:
Yucong Zhang;Stefan Holst;Xiaoqing Wen;Kohei Miyase;Seiji Kajihara;Jun Qian
Loading and unloading test patterns during scan testing causes many scan flip-flops to trigger simultaneously. This instantaneous switching activity during shift in turn may cause excessive IR-drop that can disrupt the states of some scan flip-flops and corrupt test stimuli or responses. A common design technique to even out these instantaneous power surges is to design multiple scan chains and shift only a group of the scan chains at a same time. This paper introduces a novel algorithm to optimally group scan chains so as to minimize the probability of test data corruption caused by excessive instantaneous IR-drop on scan flip-flops. The experiments show optimal results on all large ITC'99 benchmark circuits.
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发表时间:
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