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Altera_Forum's avatar
Altera_Forum
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14 years ago

DDR2 with cyclone IV E

Hi,

I would like to use a ddr2 with a cyclone IV E in my design.

I choose the most available ddr2 512Mb x16 at micron : MT47H32M16HR-25E.

Now i have to choose an IP to manage it. "DDR2 controller with altmemphy" seems to be the only IP for cyclone IV E but it doesn't have presets for MT47H32M16HR-25E.

2 questions :

- is it simple to set parameters in this IP / is the IP compatible with this DDR2 model

- I have a niosII license, does it include the DDR2 license ?

Thanks,

Sebastien.

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    I did quiet the same thing:

    - is it simple to set parameters in this IP / is the IP compatible with this DDR2 model

    I didn't have any problem. I just need to adjust the CAS lantency

    - I have a niosII license, does it include the DDR2 license ?

    You should to compile your design. If you get a file name: your_project_time_limited.sof

    you have to bye the license. You can buy the embedded IP pack.

    2 advises (it was my errors):

    + You should be carefull with the routing. Track must have approcimatively the same length.

    + Don't forget to focus on RDN and RUP pins !

    Good luck
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    Thanks for answers and advises.

    Now my nios license works. I don't know why Quartus was generating time limited programming files for DDR IP, the license was set in Quartus (and works) months before...
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    Help!!

    What did you change the CAS times to? I am using the same memory on cyclone 4 and cant get it to talk at all :(

    Thanks