The FSA805 is a 3:1 USB accessory switch that enables USB data, stereo/mono audio, and UART data to share a common connector port. It is designed for high-speed USB 2.0 signaling. The architecture is designed to allow audio signals to swing below ground (to -0.8V) so a common USB and headphone jack can be used for personal media players and portable peripheral devices. The FSA805 meets both USB Rev. 2.0 and micro-USB specifications.