When booting up a custom made board with iMX280 in USB Boot Mode is suposed that -when connected to a PC- Windows should recognize the board as a USB Device. The thing is that a pop-up message appears saying 'Unknown Device'. After using a USB Sniffer I noticed that the micro is sending the Vendor ID and the Product ID as zeros, whey it should be sending VID=0x15A2 and PID=0x004F.
I also checked the D+ and D- signal with a Logic Analyzer and both are correct.
Why the micro is sending the VID and PID as zeros??
Thank you very much in advance. BR,