Matt-

>> My understanding is that it takes 3 BUFGs and one DCM for tri-mode (maybe 
>> one more of each for RGMII support but I
>> don't see that) and, between this and other USRP2 needs, you ran into the 
>> limit of 8.  Is that accurate?  Or would
>> 10/100/1000 support would take more than 3...
>
> I can't say how many clocks a _good_ 10/100/1G system would need, but
> the Opencore required 4.  One thing to keep in mind is that while there
> are theoretically 8 global clocks in the S3, other limitations mean that
> it can be difficult to use all 8.

Ok thanks Matt.

-Jeff



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