RECONFIGURABLE TESTER HARDWARE EXTENDS JTAG/BOUNDARY SCAN APPLICATIONS WHILE SIMPLIFYING ATE SETUP

摘要

Boundary Scan (often also referred to as JTAG) as defined in IEEE Std. 1149.1 [1] has been adopted by many design and test engineers as test methodology for prototype verification and for production testing. This successful and powerful technology has a few limitations, though, some of which can be overcome with newer test standards, such as IEEE 1149.4 [2] and IEEE 1149.6 [3]. Still, practically all electronic products need to undergo a functional test before they leave the manufacturing floor. Functional Tests, however, require manual, labor intensive and costly test development and often times ad-hoc test equipment configurations. This paper discusses the benefits of combining Boundary Scan tools with Functional Test equipment, with a focus on Extended Boundary Scan applications based on reconfigurable tester hardware.