I'm running v15.5.2 and I want to create a region around my BGA's so that I can change the width/clearance rules of my diff pairs so that they can squeeze through my fanout vias. Does anyone know if regions work with differential pairs ?
you need to set up the netk width and spacing. constraint areas don't support diff pairs.
netk should be necked. make the necked width and spacing the same as the bga conatraint area.