10.1.1. Debugging modes

Authentication signals control the debugging modes. The authentication signals configure the processor so its activity can only be debugged or traced in a certain subset of processor modes and security states. See Authentication signals.


The Cortex-A9 processor does not support Secure User Halting Debug Mode. That is, when SPIDEN is LOW, the core is not allowed to enter Halting Debug Mode even if the SUIDEN bit is set to 1. You can bypass this restriction by setting the external SPIDEN pin HIGH.

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