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Observer dguisinger
Observer
3,722 Views
Registered: ‎12-26-2009

Spartan 6 GTP Filters

I've been reading the Spartan 6 LXT series GTP guide.

I've noticed the power supply requirements seem to have eased up over the Virtex-5 and I'm looking for some verification.

 

The difference I am seeing is the power supply filters.

 

The bypass caps are in the GTP guide, but the inductors on each pin are gone.  This would greatly simplify the routing in areas of the board that are already crowded.  Is this a mistake in the guide?  Or can I really get by with not having these as part of the filters?

 

Thanks,

Dan 

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2 Replies
Xilinx Employee
Xilinx Employee
3,713 Views
Registered: ‎01-03-2008

Re: Spartan 6 GTP Filters

Yes, the power supply requirements have been relaxed, but you still need to pay close attention to the noise levels of the MGT power supplies as it will directly impact the performance.
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Observer dguisinger
Observer
3,710 Views
Registered: ‎12-26-2009

Re: Spartan 6 GTP Filters

Thanks.

 

Out of the different supply pins, are there any you would recommend leaving the V5 style filtering on for extra stability?

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