On output response compression in the presence of unknown output values
On output response compression in the presence of unknown output values
复制标题
存在未知输出值时的输出响应压缩
DOI:
10.1145/513918.513985
复制
发表时间:
2002
期刊:
影响因子:
--
通讯作者:
S. Reddy
中科院分区:
文献类型:
--
作者:
I. Pomeranz;S. Kundu;S. Reddy
A circuit may produce unknown output values during simulation of an input sequence due to an unknown initial state or due to the existence of tri-state elements. For circuits tested using BIST, unknown output values make it impossible to determine a single unique signature for the fault free circuit. To accommodate unknown output values in a BIST scheme, we describe a procedure for synthesizing a minimal logic block that replaces unknown output values by a known constant. The proposed procedure ensures that the BIST scheme will be able to detect all the faults detectable by the input sequence applied to the circuit while allowing a single unique signature to be obtained.