FSA805 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability Features Description 3:1 Switch Handles: 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. Simple Switch Control Using Two Select Pins Audio Headsets UART Up to 2 High-Full and Low-Speed USB Data Negative-Swing-Capable Audio Channel Built-in Termination Resistors for Audio Pop Reduction The FSA805 meets both USB Rev. 2.0 and micro-USB specifications. Applications Cell Phones, MP3 Players, PDAs Ordering Information Part Number Operating Temperature Range Top Mark FSA805UMX -40 to +85°C JZ Eco Status Green Package 12-Lead Quad, UMLP, 1.8x1.8mm For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html. VCC FSA805 R_HOST L_HOST R RxD_HOST TxD_HOST 3:1 MUX and Charge Pump DP_HOST DM_HOST SEL[0] SEL[1] DP_CON DM_CON GND Switch Control Figure 1. Functional Block Diagram © 2009 Fairchild Semiconductor Corporation FSA805 • Rev. 1.0.0 www.fairchildsemi.com FSA805 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability March 2010 FSA805 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability 12 www.fairchildsemi.com © 2009 Fairchild Semiconductor Corporation FSA805 • Rev. 1.0.0