Microcontroller provided with hardware for supporting debugging as based on boundary scan standard-type extensions
AssigneeU.S. Philips Corporation
InventorsPeter Klapproth, Frederik Zandveld, Jacobus M. Bakker, Gerardus C. Van Loo
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Abstract
A microprocessor includes a processor element, a memory interface element, an IO interface element, a debug support element and an internal bus interconnecting all above elements. For easy debugging, it also includes attached to the internal bus a registered boundary scan standard (JTAG) interface that accesses one or more scan chains inside the microprocessor, and is arranged for controlling DMA-type exchanges via the internal bus with other elements connected to this bus.
Claims10
A microprocessor comprising a processor element, a memory interface element, an IO interface element, a debug support element and an internal bus directly connected to all above elements, said microprocessor further comprising a registered boundary scan standard (JTAG) interface element directly connected to said internal bus, said JTAG interface element accessing one or more scan chains inside said microprocessor, and said JTAG interface element furthermore controlling DMA-type exchanges via said internal bus with other elements connected to said internal bus for debugging software running on said microprocessor.
Dependencies are inferred from the claim text.