Hi all, I am new in this forum, and I have not found a question as th stated below. Sorry if it has already done. I have been designin with Spartan-3 and as a consequence of the number of different powe suply and the pinout distribution on the board it is impossible to m to have a very reduced number of pcb layers. Allowing for simetrie between powers and gnd layers on the stack I almost can't decreas from ten. Is there any idea I am missing? maybe as 2.5 V is onl used in configuration I can create islands on the 3.3V layer an share the ground layer return between both power supply I think there must be something else that allow me to work effitienl wilt fewer layers Thanks in advanc
- posted
18 years ago