I've opened a USB device and on finding it is not well, I'd like to
effectively simulate temporarily removing the USB cable (a well known way to
clean things up).

In fact, the device is a Maxim 3421E and for some reason there are some
bytes in EP2INFIFO. As a result, all my data reads are offset. I've
written the software (for a SiLab C8051F060) that drives the Maxim over SPI
and it may be that a dodgy SPI clock is to blame for the odd bytes in the
FIFO, but for now I cannot nail that so I am looking for a work-around.
Forcing enumeration of the device will do as then the SiLab resets the Maxim
and that clears EP2INFIFO.

TIA

Bill