How to set up GTL Ref Values for 45nm & 65nm

[truehighroller]

[QUOTE=DemonEyez;3361691]

ideal nb gtlref for standard Intel values is 0.666x vTT, but there is an extra value for the NB called FSB_SWING which is 0.25x vTT nominal, this is set by the manufacturer and it determines the distance for logical 0 / 1 from gtl ref voltage. it's the swing distance for a switched voltage. It may be that this is based off a divider from the GTLREF NB voltage which has already been reduced by a set of 1% resistors, it would make sense to do something along these lines as too high a vTT would cause too large swing between ground and power, perhaps thats the reason why we use smaller NB GTLREF multipliers or values.

Ok so, "0.666x vTT" is the standard right? In other words mine would be .666 x VFSB, which is 1.22 which would equal .8152 right? If so then I should make my 1.30 NBv x the ref for it equal, .8152 which would be, .63~ right? So in other words my gtl ref for the nb should be set to whatever multiplier, multiplied by 1.30 which is my NB voltage that gets me closest to the .8152? All the mumbo jumbo is not needed for me just the math in layman's terms will suffice.