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Altera_Forum's avatar
Altera_Forum
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15 years ago

Connecting SRAM direct to NIOS - DE2 board

Can I connect SRAM directly to NIOS? Under SRAM tree I have Cypress CY7C1380C SSRAM and IDT71V416 SRAM. I choose 2nd. one. and I can not connect directly SRAM. Must be connected to an Avalon bus?

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    Hi,

    you have to add a tri-state bridge (Bridges and Adapters -> Memory Mapped -> Avalon-MM Tristate Bridge) to connect the sram. Connect the tristate master interface of the tristate bridge with the tristate slave interface of the sram.
  • Altera_Forum's avatar
    Altera_Forum
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    Do I need any other controller between tri-state bridge and sram? Because when I generate nios sopc with tri-state and sram controller I dont have the pins which I'd like to connect/

  • Altera_Forum's avatar
    Altera_Forum
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    Normally not. Which pins do you see and which pins do you want to see ?