Address Translation

Virtual addresses used by software are converted to physical addresses by the CPU's Memory Management Unit (MMU) before being sent to the system bus.


The MMU on PIC32MX devices with the MIPS® M4K® core performs the following translations:

  • Fixed Mapping Translation (FMT) on KSEG0/KSEG1
    • Physical Address = (Virtual Address) AND (0x1FFFFFFF)
  • Please refer to the PIC32MX FRM "Section 3. Memory Organization" for detailed coverage on the FMT.
  • Also, see chapter 6 of the "See MIPS Run" book for a good discussion on low-level memory management in MIPS CPUs.
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