USBCMD_ATDTW
hw_write(ci, OP_USBCMD, USBCMD_ATDTW, USBCMD_ATDTW);
} while (!hw_read(ci, OP_USBCMD, USBCMD_ATDTW) && tmp_stat);
hw_write(ci, OP_USBCMD, USBCMD_ATDTW, 0);