SLAU723A October 2017 – October 2018 MSP432E401Y , MSP432E411Y
If the RESET bit in the USBPOWER register is set, the USB host controller generates USB RESET signaling on the bus. The RESET bit must be set for at least 20 ms to ensure correct resetting of the target device. After the CPU has cleared the bit, the USB host controller starts its frame counter and transaction scheduler.