The CPU and peripherals with EasyDMA can access memory through the AMBIX interconnects. The same interconnect is used by the CPU to access peripheral registers. The following figure is a simplified interconnect diagram.
See Block diagram, AMBA interconnect (AMBIX), and EasyDMA for more information about the AMBIX interconnects and EasyDMA.
RAM and RRAM memory regions are protected with TrustZone® security and are secure after reset. Memory regions can be configured to be non-secure by using MPC — Memory Privilege Controller.