Register change summary resource

摘要

A microcontroller provides a register change summary resource for summarizing register changes. Selected system registers within each resource are coupled to bits in resource change registers of the register change summary resource using logic that tracks accesses to the system registers. Each resource change register is coupled to a bit in a summary register. For systems with numerous system registers, each summary register may be coupled to a bit in a higher-level summary register. The register change summary resource further provides a software-controlled bit mask register. A change in a summary or resource change register may trigger a processor interrupt. Each register in the register change summary resource can be reset, also under software control. The registers within the register change summary resource are accessible through a dedicated software development port.