The FSA800 is a 3:1 USB accessory switch that enables USB data, stereo and mono audio, microphone, 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 so a common USB and headphone jack can be used for personal media players and portable peripheral devices.

FSA800 detects wall chargers through a dedicated pin that provides the baseband with charger detection.

The FSA800 meets both USB Rev. 2.0 and micro-USB specifications.

• 3:1 Switch Handles:
  • Audio Headsets
  • UART
  • High- and Low-Speed USB Data
• USB Charger Detection and Indication
• Negative-Swing-Capable Audio Channel
• Built-in Termination Resistors for Audio Pop Reduction
• Simple Switch Control Using Three Select Pins
• 28V Over-Voltage Tolerance on V_BUS

• Cell Phones, MP3 Players, PDAs