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BQi's avatar
BQi
Icon for Occasional Contributor rankOccasional Contributor
5 years ago

what is the ref clk requirement of 322M CDR_Ref clk and 125M CDR_Ref clk

We need supply the ref clk for 1G/10G multi rate ethernet phy ipcore we want to know what is the ref clk requirement of 322M CDR_Ref clk and 125M CDR_Ref clk
Deshi_Intel's avatar
Deshi_Intel
Icon for Regular Contributor rankRegular Contributor
5 years ago

Hi,

Can you elaborate further on what you mean by CDR refclk requirement ?

Typically we would expect user to provide free running, stable clock with the correct frequency using IO standard set in Quartus design.

This would be all the design requirement for CDR refclk.

Thanks.

Regards,

dlim