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roeekalinsky's avatar
roeekalinsky
Icon for Contributor rankContributor
4 years ago

Optimal frequency selection for IOPLL's VCO: minimize or maximize?

Is best IOPLL performance obtained by minimizing the VCO frequency, or maximizing it? The IOPLL IP generator GUI appears to be confused on this issue, at least for Stratix 10. It describes one thin...
Ash_R_Altera's avatar
Ash_R_Altera
Icon for Regular Contributor rankRegular Contributor
4 years ago

Hi Rooe,


Thanks for providing the examples.

I see the differences in the A10 and S10 PLL VCO frequencies.

Please note that, though the names sound same, the two devices have different components. IOPLL in A10 is also found in Cyclone 10 GX, but S10 IOPLL is unique to the device.


Are you facing any timing issues or functional issues due to the generated clock in S10 device?

I will take this observation to the engineering team for more clarifications.


Regards