6.6 Memory Map Access Details
The bus system on the MSP432P401x MCUs incorporates four masters, which can initiate various types of transactions:
- ICODE: Cortex-M4 instruction fetch bus. Accesses the Code zone only
- DCODE: Cortex-M4 data and literal load/store bus. Accesses the Code zone only. Debugger accesses to Code zone also appear on this bus.
- SBUS: Cortex-M4 data read and write bus. Accesses to all zones except Code zones and PPB memory space only. Debugger accesses to this space also appear on this bus.
- DMA: Access to all zones except the PPB memory space
The PPB space is dedicated only to the Cortex-M4 Private Peripheral Bus.