Q: FAQ: Using SOC devices as USB MCU

To interface with USB interface to PC with SOC devices it is recommended to use the CC2511 USB dongle reference design

The user manual for the CC2511 dongle reference design can be found at:
http://www.ti.com/litv/swru082

The product folder for CC2511 includes application examples that use the USB interface as virtual serial port.
http://focus.ti.com/docs/prod/folders/print/cc2511f16.html