Functional Models and Testbenches
A Functional Model (FM) is a model of a component which represents both the interfaces of the component and the internal operation or structure of the component. This operation can be described at various levels including Instruction Set Architecture (ISA) level, RTL, and gate level. A Bus Functional Model (BFM) is a subset of the Functional Model in that it only models the bus interfaces and bus transactions of the component rather than just its operation.
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