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The AS3UA6313CR is a switches combo of High-Speed Data/Hi-Fi Audio and Side Band Use (SBU). It
operates dual power supplies of VBUS and VBAT, either of which can power-up the chip. The Audio path is with low distortion, high swing capability that features Ron of 1.2Ω (typical) at VBAT=3.3V. With very sound THD+N performance, it is an ideal device for Hi-Fi system applications. The USB path bandwidth is wide enough (>900MHz) to pass high-speed USB 2.0 differential signals (480 Mb/s) with good signal integrity. The Side Band Use (SBU) configures internal switches to Ground and MIC connections on a headphone connector. The Ground switch has a low Ron of 0.3Ω (typical) to minimize voltage drop across it, preventing undesired increase in headphone ground reference voltage. Furthermore, a GND sense path supports quasidifferential amplifier architectures, which helps reduce cross-talk between R and L and improve sound quality. In addition, SBU ports (40MHz bandwidth) can be configured as UART Tx/Rx ports or to transmit eDP AUX signals (1MHz). 
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