march 2010 ? 2009 fairchild semiconductor corporation www.fairchildsemi.com FSA805 ? rev. 1.0.0 FSA805 ? usb2.0 high-speed (4 80mbps), uart, and audio switch with negative signal capability FSA805 ? usb2.0 high-speed (480mbps), uart, and audio switch with negative signal capability features ? 3:1 switch handles: ? 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 ? simple switch control using two select pins applications ? cell phones, mp3 players, pdas description 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. ordering information part number operating temperature range top mark eco status package FSA805umx -40 to +85c jz green 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 . dp_con gnd dm_con dp_host dm_host r_host l_host rxd_host txd_host vcc sel[0] sel[1] FSA805 3:1 mux and charge pump switch control r figure 1. functional block diagram
? 2009 fairchild semiconductor corporation www.fairchildsemi.com FSA805 ? rev. 1.0.0 12 FSA805 ? usb2.0 high-speed (4 80mbps), uart, and audio switch with negative signal capability
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