XAPP459 - Eliminating I/O Coupling Effects when Interfacing Large-Swing Single-Ended Signals to User I/O Pins on Spartan-3 Families Application Note: Spartan-3 Families R Eliminating I/O Coupling Effects when Interfacing Large-Swing Single-Ended Signals to User I/O Pins on Spartan-3 Families XAPP459 (v1.2) September 24, 2010 Author: Eric Crabill Summary The Spartan-3 families, consisting of Spartan-3, Spartan-3E, and Extended Spartan-3A devices, support an exceptionally robust and flexible ……