MEMORY MANAGEMENT UNIT AND METHOD OF ACCESSING AN ADDRESS

摘要

A memory management unit (200) comprises register and control logic (225) and arranged to support a microprocessor controller unit (205) accessing physical address space (260) via an address bus wherein the microprocessor controller unit (205) comprises a program counter having a first address size, the memory management unit (200) characterised in that the register and control logic (225) comprises a register (320) having a second address size greater than the first address size and arranged to provide an extended address bus between the microprocessor controller unit (205) and physical address space (260).