A Non-Intrusive Isolation Approach for Soft Cores

Provided by: edaa
Topic: Hardware
Format: PDF
Cost effective SOC test strongly hinges on parallel, independent test of SOC cores, which can only be ensured through proper core isolation techniques. While a core isolation mechanism can provide controllability and observability at the core I/O interface, its implementation may have various implications on area, functional timing, test time and data volume, and at-speed coverage on the core interface. In this paper, the authors propose a non-intrusive core isolation technique that is based on the utilization of existing core registers for isolating the core. They provide a core register partitioning algorithm that is capable of identifying the core interface registers, and of robustly isolating a core, resulting in a computationally efficient core isolation implementation that is area and performance efficient at the same time.

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