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Altera_Forum
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10 years ago

Cyclone IV: What is Internal Oscillator IP in Quartus 15?

Cyclone IV has a hidden internal oscillator that now is useable?

5 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    10 years ago

    The Oscillator IP is for the MAX10 which has an oscillator in the die. But the oscillator isn't precise - it has a wide range of frequencies depending on temperature and other factors.

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    Altera_Forum
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    10 years ago

    Ok, thanks.

    I thought that after selection of "Cyclone IV" in project settings were hidden IPs not compatible
  • Altera_Forum's avatar
    Altera_Forum
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    10 years ago

    I believe only Max series currently has the on die oscillator. My understanding is the existing FPGA series does not support it.

  • Altera_Forum's avatar
    Altera_Forum
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    10 years ago

    Yup. Sounds like this is a minor bug in the 15.0 software which isn't surprising.

  • Altera_Forum's avatar
    Altera_Forum
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    10 years ago

    Hi flyz47655,

    Probably you can consider reporting this bug to Altera for them to fix it in future release.