Using host code I had written and had working on a TM4CGH6PZ processor, I ported it to the TM4c123GH6pge part which is in a new design that includes an onboard HUB TUSB2046B. I modified the initialization code to include the Hub class included in the Tiva usblib 2.0 as well as a device class I wrote for a usb-uart bridge. I modeled the initialization routine after the example in the usb user guide. I know the hub chip comes out of reset but no activity occures in the usb stack. The difference in the processors is that the usbDp and DM pins are on port L in the new design. I have looked at the DM & DP signals and they don't appear to do anything.