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3LionsCT's avatar
3LionsCT
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8 months ago

Address Space?

Hi  I am confused about the address space requirements when using your own Avalon master in a custom module. (see attached) Why do I have to use more address bits than I need when I only drive one ...
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ShengN_altera's avatar
ShengN_altera
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7 months ago

May i know what is your Nios V system address width?

  • 3LionsCT's avatar
    3LionsCT
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    7 months ago

    I believe it is 32 bits. I've attached the address map.

     

    Could the extra two bits have anything to do with using a 32 bit address bus so the Address bus needs an extra two bits for the bye offsets?

    Thanks

    • ShengN_altera's avatar
      ShengN_altera
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      7 months ago

      [DELETED]

    • ShengN_altera's avatar
      ShengN_altera
      Icon for Super Contributor rankSuper Contributor
      7 months ago

      May I know if the arbiter module is not used, the custom hdl min address width is?

      • 3LionsCT's avatar
        3LionsCT
        Icon for Occasional Contributor rankOccasional Contributor
        7 months ago

        The arbiter module is used. I attached a sketch of the system with the address widths. Basically I am trying to access a common sdram from both the Nios V and my own custom HDL

        Thanks