1.1.9 Data Space Addressing

The data space is split into two blocks, referred to as X and Y data memory. Each memory block has its own independent Address Generation Unit (AGU). The MCU class of instructions operates solely through the X memory AGU, which accesses the entire memory map as one linear data space. The DSP dual source class of instructions operates through the X and Y AGUs, which splits the data address space into two parts. The X and Y data space boundary is arbitrary and device-specific.