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DM814x DSP and MMU

Andrew Elder
Expert 1680 points

The page below

http://processors.wiki.ti.com/index.php/SysLink_MMU_Support

indicates that MMU is turned off for the DSP when using syslink 2.10 and later. How does one verify that ?

  • 0
    TI__Genius 12865 points

    If you don't want to trust the documentation, you can try to check the MMU registers to see if it is enabled. I think there is an MMUENABLE bit in the MMU_CNTL register which should be 0 to ensure the MMU is off. Please refer to the device's TRM documentation for more information on the MMU registers.

    Best regards,

    Vincent

  • 0 in reply to Vincent W.
    Expert 1680 points

    Thanks for your response. I am looking at the TRM (Literature Number: SPRUGZ8A 14 November 2011–Revised February 2012) section 1.4.5 (MMU Registers) and I don't see a definition for the base address of the MMU. All registers are listed in terms of offsets. I must be missing something rather basic here?

  • 0 in reply to Andrew Elder
    Expert 1680 points

    Andrew Elder said:

    Thanks for your response. I am looking at the TRM (Literature Number: SPRUGZ8A 14 November 2011–Revised February 2012) section 1.4.5 (MMU Registers) and I don't see a definition for the base address of the MMU. All registers are listed in terms of offsets. I must be missing something rather basic here?

    I also checked the datasheet sprs647c.pdf.

  • 0 in reply to Andrew Elder
    TI__Genius 12865 points

    In the datasheet, page 30, there is an entry for 'DEMMU Peripheral Registers'. I think that is what you are looking for. You may also want to check with the device forum if you need additional details.

    Best regards,

    -Vincent