* - DMA transfers to and from the USB controller are not yet implemented for this release.\r
* - The UC3C, UC3D and UC3L sub-families of UC3 are not currently supported by the library due to their\r
* altered USB controller design.\r
* - DMA transfers to and from the USB controller are not yet implemented for this release.\r
* - The UC3C, UC3D and UC3L sub-families of UC3 are not currently supported by the library due to their\r
* altered USB controller design.\r