Content originally posted in LPCWare by Tsuneo on Sun Oct 16 14:08:29 MST 2011
Hi bitli,
Run one of USB examples, first, which come with the QuickStart board. It confirms hardware integrity of the board around the USB circuit.
Unfortunately, EA doesn't open the schematic of this board on their web. So, I can't point out the cause exactly. But I suppose your trouble would be caused by the difference of the extra port pin for D+ pull-up enable (SoftConnect).
Crystal frequency is the same, 12MHz, on both boards. It's fine.
Tsuneo