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
Features
3:1 Switch Handles: Audio Headsets UART High- and Low-Speed USB Data USB Charger Detection and Indication
Description
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.
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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 VBUS
Applications
Cell Phones, MP3 Players, PDAs
IMPORTANT NOTE:
For additional performance information, please contact analogswitch@fairchildsemi.com.
Ordering Information
Part Number
FSA800UMX
Operating Temperature Range
-40 to +85°C
Top Mark
JN
Eco Status
Green
Package
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.
VCC
FSA800
MIC_HOST R_HOST L_HOST RxD_HOST TxD_HOST DP_HOST DM_HOST Charger Detect Switch Control
R
3:1 MUX and Charge Pump
OVT VBUS DP_CON DM_CON
SEL[0] SEL[1] SEL[2] 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
www.fairchildsemi.com
© 2009 Fairchild Semiconductor Corporation FSA800 • Rev. 1.0.0
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