On Reducing Wrapper Boundary Register Cells in Modular SOC Testing

Motivated by the increasing area and performance overhead caused by wrapping the embedded cores for modular SOC testing, this paper proposes a solution for reducing the number of wrapper boundary register cells. Since the very purpose of core wrappers is to provide controllability and observability for the cores-under-test, it is shown how the number of wrapper boundary register cells can be reduced without affecting the test quality. While a …