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13.2. About the debug unit

The ARM1136JF-S debug unit assists in debugging software running on the ARM1136JF-S processor. You can use an ARM1136JF-S debug unit, in combination with a software debugger program, to debug:

  • application software

  • operating systems

  • ARM processor based hardware systems.

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.

The DBGEN signal enables the debug unit.

The following sections describe the ways you can debug the ARM1136 processor:

The ARM1136JF-S debug interface is based on the IEEE Standard Test Access Port and Boundary-Scan Architecture.

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