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Altera_Forum's avatar
Altera_Forum
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17 years ago

problems with sdram

hello! english is not my native language so excusme for the posible mistakes i'll do...

i'm trying to follow the an517.pdf (http://www.altera.com/literature/an/an517.pdf) resource to build a ddr2 sdram controller with sopc for a cyclone iii development board... this document allows you to build the system controller step by step.

i've done it from the start to the end, but now i have to make the pins assignment and i'm having some problems... i have checked the schematic file included with the board but i'm so confused... if anyone could help me with that... thanks in advance.

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    17 years ago

    i've tested my project and everything seems to work properly, i can write data in arbitrary ram direction and then read back...

    i'm still thinking the fitter error was caused due to a bad pin assigment on the project.
  • Altera_Forum's avatar
    Altera_Forum
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    17 years ago

    uettwiller, thanks for your answer. I know how to assign the pins (this is not my first project)! ;)

    I had a fitter error when I tried to compile the project and i think it was because a bad pin assignment, but i couldn't be able to find the mistake and that was driving me crazy...

    i think i've solved the problem, and i'm going to test the project reading from and writting to SDRAM... hope it works!
  • Altera_Forum's avatar
    Altera_Forum
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    17 years ago

    hi victor

    why are you so confused? what is your problem? Don't you know how to assign pins or don't you know the pin location??