It indicates that the USBIO is upset.
I checked and it is throwing an exception here in adi_usb_net2272.c:
ADI_DCB_CALLBACK_FN epZeroCallback = pDev->PhysicalEndpointObjects[EP0].pLogicalEndpointObj->EPInfo.EpCallback;
ucStatus = _inpb_d(USBCTL1_ADDR);
/* ensure that endpoint 0 has a callback installed */
if (epZeroCallback == NULL)
if(intStatus & ROOT_PORT_RESET_INT)
The MP encoder works. but not the BP. When the code above is hit, the EZ USB is not recognized on the PC.
Has anyone seen this before?