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How to determine the base address of EMIF of TMS570?

J Yin
Intellectual 295 points

Hi, there

I am trying to connect external SRAM though EMIF. In TRM, it only says "See the device-specific data manual for the memory address of these registers", but what it point to?

Anyone help?

thanks

  • 0
    TI__Mastermind 49120 points

    The TRM is referring to the "data manual", which should have said "datasheet" instead. The datasheet is SPNS141x. The EMIF module registers are accessed from address 0xFFFF_E800 onwards, and the external memory is accessible from address 0x6000_0000 onwards. This is defined in the "Memory Map" section on page 7 of the datasheet.

    Regards, Sunil

  • 0 in reply to Sunil Oak
    Intellectual 295 points

    Thanks sunil,

    I have read datasheet but not sure this address is what called "memory-mapped register" address.

    What's difference between EMIF's "memory-mapped register" and normal register like PBIST register or DMA register?

  • 0 in reply to J Yin
    TI__Mastermind 49120 points

    J Yin,

    There is no difference - all control registers are "memory-mapped" registers, as they belong within the 4GB address space addressable by the CPU.

    Regards, Sunil

  • 0 in reply to Sunil Oak
    Intellectual 295 points

    Hi, 

    In this case, why not put base address above the register description as other modules rather than "See the device-specific data manual...". 

    Additionally, the "memory-mapped register" could  make people confuse because it only appears in this part specifically. It seems to tell people it is some kind of special register but it's not, am I right?