Nxp Usa, Inc.

Iani Bogdan Almajan

Joseph Charles Circello

Julien Olivain

Self-checking central processing unit (CPU) systems and methods are provided, in which the self-checking CPU systems include a core monitor that performs checking functions to monitor and verify the executions of a primary CPU. The primary CPU has a primary processor pipeline, and the core monitor has a checker pipeline that is parallel to the primary processor pipeline. The core monitor performs checking functions during each stage of the primary processor pipeline, where the type of each checking function is based on a corresponding type of function being performed by the primary CPU. For example, the core monitor may perform parity checking for data transfers and logical operations performed by the primary CPU, and residue checking for arithmetic instruction execution logic performed by the primary CPU.

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Bragadiru, Romania

Iani Bogdan Almajan