The MCF52211 Reference Manual specifies the following USB tranceiver pins: USP_DM, USB_DP and USB_DMI, USB_DPI. what is the difference between these two sets of pins? The USB_DMI & USB_DPI pins are shared with the UART2 TX and RX pins. Are these an alternative set of USB tranceiver pins? If this is the case, how does one specify which set of tranceiver pins to use?