I'm laying out a multilayer PCB with several dense BGA packages. I've got the schematic all ready and I'm getting into the layout. Under the BGAs the first thing I did is to place a small via next to each BGA pad (for the dog-bone routing approach).
The problem is that when I connect the nearby pad to the new via, the signals don't connect. The pad may have a name like 'Signal_A', and the new via will have the autogenerated net name like 'N$527'. I know I can manually change the net each via is on so that the routing will actually connect the signals, but that is a very large task considering the many hundreds of BGA pins in the design.
I seem to remember somehow figuring out how to do this in previous designs (I have used Eagle for a while, but never for a design this complex), but I can't remember what I did. I remember being able to just drag the trace from the properly named pad over to the new via and dropping it, and have the via automatically accept the name of the net. Did I completely imagine this? I'm too young to have this kind of bad memory!
Thanks for your help. Eagle is such a great product!
Steve
