|Non-Confidential||PDF version||ARM 100052_0001_00_en|
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The CCN-502 includes two signals that provide Secure access to the debug, trace, and PMU capabilities.
These signals are:
|NIDEN||A global enable for all debug, trace, and PMU functionality. This overrides all other software enable controls.|
|SPNIDEN||A global enable for Secure debug, trace, and PMU. It is only applicable when NIDEN is asserted.|
Deasserting SPNIDEN prevents Secure event counting wherever possible. Where a performance event cannot be determined to be Secure or Non-secure, that event is considered as Secure.