I was running a simple program (just a couple low-pass filters) using my ADAU1761 Eval board with USBi connection and then suddenly there was a click and no audio was passing through. All of the LEDs on the USBi board are now lit up...before this, only two LEDs lit up. I disconnected everything, the just connected the USBi board to my computer (disconnected it from the Eval board) and the LEDs are all still lighting up. Did my USBi board just die??