FSA800 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability Features Description Negative-Swing-Capable Audio Channel 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. Built-in Termination Resistors for Audio Pop Reduction FSA800 detects wall chargers through a dedicated pin that provides the baseband with charger detection. Simple Switch Control Using Three Select Pins 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 - 28V Over-Voltage Tolerance on VBUS Applications IMPORTANT NOTE: For additional performance information, please contact [email protected]. Cell Phones, MP3 Players, PDAs Ordering Information Part Number Operating Temperature Range Top Mark FSA800UMX -40 to +85°C JN Package Eco Status Green 16-Lead Quad, UMLP, 1.8 x 2.6mm For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html. FSA800 VCC MIC_HOST R_HOST L_HOST RxD_HOST TxD_HOST OVT VBUS R 3:1 MUX and Charge Pump DP_CON DM_CON DP_HOST DM_HOST SEL[0] SEL[1] SEL[2] Charger Detect Switch Control CD_N GND Figure 1. Functional Block Diagram © 2009 Fairchild Semiconductor Corporation FSA800 • Rev. 1.0.0 www.fairchildsemi.com FSA800 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability September 2009 FSA800 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability 12 www.fairchildsemi.com © 2009 Fairchild Semiconductor Corporation FSA800 • Rev. 1.0.0