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mhed
Contributor
Contributor
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Registered: ‎09-22-2017

[ZYNQ7000] DDR3 accuracy on clock frequency

Hi,

 

On a project for my customer, i have to instantiate a DDR3 controller. But he requires to have a memory clock of 533MHz +/- 8000ppm. I've correctly defined the frequency in the MIG configuration, but i cannot find in any datasheet i've read (Zynq TRM, MIG DS/PG, Clocking Wizard) the accuracy of the clock generated by the MIG.

 

Can you help me?

 

Best regards

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rpr
Moderator
Moderator
115 Views
Registered: ‎11-09-2017

Hi

Are you looking for ps ddr or pl mig interface? PS/PL mig generates the frequency as per configuration and which close to requested. I believe a high-quality oscilloscope can provide the exact value.

Regards
Pratap

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