SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
The microprocessor unit (MPU) has a 32-bit address port, which allows it to handle a 4-GiB space divided into several regions, depending on the target type.
The memory map has the following features that are shared among the initiators, such as the MPU subsystem:
The GPMC and DMM are dedicated to memory connection. The GPMC is used for NOR and NAND flash and static random access memories (SRAMs). The DMM is used for synchronous dynamic random access memories (SDRAMs), such as DDR. For more information, see Section 17.2, Dynamic Memory Manager, and Section 17.3, EMIF Controller.
The L3 interconnect allows the sharing of resources, such as peripherals and external or on-chip memories, among all the initiators of the platform. The L4 interconnects control access to the peripherals.
Transfers across the platform between initiators and targets are physically conditioned by the chip interconnect and can be logically conditioned by firewalls. For more information about the intercommunication (L3 and L4 interconnects) and protection mechanisms implemented in the device, see Section 16.2, L3 Interconnect, and Section 16.3, L4 Interconnect.
Figure 2-1 shows the interconnect of the device and the main modules and subsystems in the platform.
Figure 2-1 Interconnect Overview