A.4.7 Debug authentication interface

The interface input signals define the Debug Authentication signal values when the signals are not overridden by the internal Secure Debug Configuration registers. The final debug authentication signals are then output to the rest of the system.

Table A-12 Debug authentication

Signal name Width Direction Description
DEBUGENIN 1 Input Debug Enable Input
NIDENIN 1 Input Non-Invasive Debug Enable Input
SPIDENIN 1 Input Secure Privilege Invasive Debug Enable Input
SPNIDENIN 1 Input Secure Privilege Non-Invasive Debug Enable Input
DEBUGEN 1 Output Merged Debug Enable Output
NIDEN 1 Output Merged Non-Invasive Debug Enable Output
SPIDEN 1 Output Merged Secure Privilege Invasive Debug Enable Output
SPNIDEN 1 Output Merged Secure Privilege Non-Invasive Debug Enable Output

Note:

SSE-200 does not contain a Debug Access Port (DAP) that can use some of these signals to control access. Instead they are used by processors in the system and also Access Ports (AP) in the Debug element to control access into the debug subsystem and into the main system.

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