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Registered: ‎06-21-2019

Drive and Slew differences from Virtex 5 to Kintex 7.

If the slew and drive have identical settings, is it expected the signal envelope will look identical if tested on two different FPGA technologies (meaning two different nm silicone) if theoretically placed on an identical circuit board (obviously with a different FPGA)?

 

 

 

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Registered: ‎04-18-2011

Hi @joseph.grigonis 

In theory this is the case. But you have different packages and there can be slightly different slew rates. 

in practice we can say that to compare them you should consider an ibis simulation. 

You can have confidence that for LVCMOS with a given drive and slew it will do what it says on the tin but it's good practice to validate your design with an IBIS sim. 

Regards, 

Keith

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