11.7.1. AHB-AP transaction types

AHB-AP does not do back-to-back transactions on the bus, and so all transactions are non-sequential. AHB-AP can perform unaligned and bit-band transactions. The Bus Matrix handles these. AHB-AP transactions are not subject to MPU lookups. AHB-AP transactions bypass the FPB, and so the FPB cannot remap AHB-AP transactions.

SWJ/SW-DP initiated transaction aborts drive an AHB-AP supported sideband signal called HABORT. This signal is driven into the Bus Matrix, which resets the Bus Matrix state, so that AHB-AP can access the Private Peripheral Bus for last ditch debugging such as read/stop/reset the core.

AHB-AP transactions are little endian.

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