FAIRCHILD FSA800UMX

FSA800 — USB2.0 High-Speed (480Mbps), UART, and
Audio Switch with Negative Signal Capability
Features
Description
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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.
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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:
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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. 1.0.2
www.fairchildsemi.com
FSA800 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability
November 2009
FSA800 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability
15
www.fairchildsemi.com
© 2009 Fairchild Semiconductor Corporation
FSA800 • Rev. 1.0.2