I have a circut board that i manufacture, with the DA82562EM in place and working, I was shipped new DA82562ET for my current build, which looks like it is the same but it doesnt have the Lan Alert option, is it actually a different die/ part or is it a programmable option? Does anyone kow if the ET is actually a different Part than The EM? this is very important to me and i would greatly appreciate any input available.