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

NCO help

Hello,

I am trying to generate a 60 hz sine wave in quartus II 9.1 sp2 using quartus II simulator. I have a 60 khz clock to the input clk of the NCO. both the reset and clken are tied to vcc. Here is my circuit and simulation results.

Any help is appreciated.

2 Replies

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

    The forum has a nasty habit of reducing the image sizes, making them very difficult to read, Putting them in a zip file solves the problem.

    What is the problem? The output looks fine.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    --- Quote Start ---

    What is the problem? The output looks fine.

    --- Quote End ---

    I would prefer a clearer problem report, too. But the waveform looks different from a sine at first sight. No NCO parameters are given however, so we still have to guess about the issue. Why don't you post a Quartus archiv of your design, allowing others to reproduce the problem?