I have a project where I'm using an LPC1754FBD80,551LPC1754FBD80,551 in a LQFN-80 package and a CC2400 in a QFN48 package. The LPC came from the lpc1xxx-v6 library downloaded from the EagleCAD website. The other one I created based on another library which has the part already created. After I added the connections for the ground pins and I looked at the board, this is what I saw:
So that's a ground layer with the two ICs side by side. You can see the pins that are supposed to be connected to ground. What I don't understand is why Eagle shows me unrouted nets connecting the ground pins together. For the LPC1754FBD80,551LPC1754FBD80,551, the pins are clearly connected to the ground layer, so why the unrouted net? On the CC2400 however, the exposed pad isn't connected to ground at all (even though it is in the schematic), so I can at least understand why it's showing me the unrouted net there. However I'm still scratching my head, why wouldn't Eagle connect it? There is no Keepout or Restrict area around the exposed pad. What's there is a tStop and tCream area right over the pad.
Can anyone explain what's happening here, and how do I fix it?
Thanks!
