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12.2. About the debug unit

The processor debug unit assists in debugging software running on the processor. You can use the processor debug unit, in combination with a software debugger program, to debug:

  • application software

  • operating systems

  • hardware systems based on an ARM processor.

The debug unit enables you to:

  • stop program execution

  • examine and alter processor and coprocessor state

  • examine and alter memory and input/output peripheral state

  • restart the processor core.

You can debug software running on the processor in the following ways:

The processor external debug interface is compliant with the AMBA 3 APB Protocol Specification.

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