C1.2 About the D-AHB interface

The 32-bit Debug AHB (D-AHB) interface implements the AMBA® 5 AHB protocol. It can be used with a CoreSight™ AHB-AP to provide debugger access to all processor control and debug resources, and a view of memory that is consistent with that observed by load/store instructions acting on the processor.

Access to all resources from the debugger can be controlled by system level debug authentication supported by the processor. If the Armv8‑M Security Extension is included, the authentication can prevent a debugger from accessing any Secure data or code while providing full access to Non-secure information.

The accesses to individual registers and memory might be restricted according to the debug authorization that your system uses.

D-AHB interface accesses are only in little-endian format.

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