True Interactive Testing based on IJTAG
Résumé
The IEEE 1687 standard, commonly called ITAG, introduced several innovations. While the hardware-related ones, most notably mux-enabled dynamic topologies, are clearly successful and are widely adopted, several pans of the standard are still unsupported by the EDA vendors and are little known to the general public. In particular, the Procedural Description Language (PDL) theoretically allows for interactive routines whose outputs and control flow can be modified by the data retrieved from the System Under Test. However, the traditional Test Flow and Execution backend are not able to really support such features. In this paper, we present an in-depth analysis of these limitations and propose a fully-functional solution able to support true interactive behavior, whose features are demonstrated through a Proof-of-Concept.
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