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17267 Discussions

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

Altera_Forum
Honored Contributor II
‎06-01-2015 11:59 AM
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Cyclone IV has a hidden internal oscillator that now is useable?

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Altera_Forum
Honored Contributor II
‎06-01-2015 01:45 PM
1,005 Views

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
Honored Contributor II
‎06-01-2015 02:02 PM
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Ok, thanks. 

I thought that after selection of "Cyclone IV" in project settings were hidden IPs not compatible
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Altera_Forum
Honored Contributor II
‎06-02-2015 12:49 AM
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I believe only Max series currently has the on die oscillator. My understanding is the existing FPGA series does not support it.

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Altera_Forum
Honored Contributor II
‎06-02-2015 04:04 AM
1,005 Views

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

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Altera_Forum
Honored Contributor II
‎06-02-2015 06:39 AM
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Hi flyz47655, 

 

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