Test Technology of Digital Circuit Board Based on Serial Signature Analysis Technique in Production Line

생산라인에서 SSA 기법에 근거한 디지털 회로 보오드 검사 기술

This paper proposes test strategy detecting the faulted digital device or the faulted digital circuit on the digital circuit board using signature analysis technique based on the polynoimal division theory. SSA(serial Signature Analysis) identifies the faults by comparing the reminder from good device and reminder from the tested device, which reminder is obtained by enforcing the data stream outputed from output pins of tested device on LFSR(Linear Feedback Shift Resister) representing the characteristic equation.