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Altera_Forum's avatar
Altera_Forum
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9 years ago

Cyclone IV GX DDR

Hi, I´ve been using a DE2-115 with cyclone IV E , and in my project I have a DDR IP that came from a Cyclone GX, apparently the rest of the design is working until the IP circuit, where the output is not as expected, suggesting that the circuit it's not functional. I simulated with the ModelSim and had a good result, but when I run the SignalTap, the output does not have any changes in it's waveform.

My doubt here is, does this DDR IP generated from a GX works in other cyclone ?

Thanks in advance.

4 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    9 years ago

    I don't have a DE2-115 but I suspect that it is using ALTMEMPHY as the IP for the DDR2. If you are referring to the second device as Cyclone IV GX, then yes, it is using the same ALTMEMPHY IP.

  • Altera_Forum's avatar
    Altera_Forum
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    9 years ago

    Thanks for your answer, I should have more clear about the second device, the IP generated from a Cyclone IV GX works in a Cyclone IV E?

    thanks.
  • Altera_Forum's avatar
    Altera_Forum
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    9 years ago

    The IP itself (ALTMEMPHY) is compatible so unless Quartus tells of any error during compilation I don't anticipate any issues.

  • Altera_Forum's avatar
    Altera_Forum
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    9 years ago

    hi I'm sorry but I have a different question:

    I have DE2i-150 FPGA which support cyclone iv gx

    I want to drive the hsmc with 3.3 v while the vcio of the hsmc is 2.5 v

    How can I solve this problem