The role of test protocols in testing embedded-core-based systemICs
Marinissen, E.J.; Lousberg, M.
Test Workshop 1999. Proceedings. European
Volume , Issue , 1999 Page(s):70 - 75
Digital Object Identifier 10.1109/ETW.1999.804248
Summary:A core-based design style introduces new test challenges, which,
if not dealt with properly, might defeat the entire purpose of using
pre-designed cores. Macro Test is a liberal test approach for core-based
designs, i.e., it supports all kinds of test access mechanisms to the
embedded cores. The separation of tests into test protocols and test
patterns plays a crucial role in Macro Test. Tasks as expansion of
core-level tests to chip level, scheduling of tests, and test assembly
are carried out on test protocols by software tools. This paper
addresses the role of test protocols and features an example of a small
scan-testable core. We argue that the fact that expansion and scheduling
take place on test protocols rather than on complete tests is important
to reduce the computational complexity of the associated software tools
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