FSA800 Datasheet, PDF (1/2 Pages) Fairchild Semiconductor – 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
ƒ 3:1 Switch Handles:
- Audio Headsets
- UART
- High- and Low-Speed USB Data
ƒ USB Charger Detection and Indication
ƒ Negative-Swing-Capable Audio Channel
ƒ Built-in Termination Resistors for Audio Pop
Reduction
ƒ Simple Switch Control Using Three Select Pins
ƒ 28V Over-Voltage Tolerance on VBUS
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.
Applications
ƒ Cell Phones, MP3 Players, PDAs
IMPORTANT NOTE:
For additional performance information, please contact
[e-mail].
Ordering Information
Part Number
FSA800UMX
Operating
Temperature Range
-40 to +85°C
Top
Mark
JN
Eco Status
Package
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.
VCC
MIC_HOST
R_HOST
L_HOST
RxD_HOST
TxD_HOST
DP_HOST
DM_HOST
SEL[0]
SEL[1]
SEL[2]
CD_N
GND
FSA800
R _3:1
MUX
and
Charge
Pump
Switch
Control
OVT VBUS
DP_CON
DM_CON
Charger
Detect
© 2009 Fairchild Semiconductor Corporation
FSA800 • Rev. 1.0.0
Figure 1. Functional Block Diagram
www.fairchildsemi.com