FSA805 Datasheet, PDF (1/2 Pages) Fairchild Semiconductor – USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability

March 2010
FSA805 — USB2.0 High-Speed (480Mbps), UART, and
Audio Switch with Negative Signal Capability
Features
ƒ 3:1 Switch Handles:
ƒ Audio Headsets
ƒ UART
ƒ Up to 2 High-Full and Low-Speed USB Data
ƒ Negative-Swing-Capable Audio Channel
ƒ Built-in Termination Resistors for Audio Pop
Reduction
ƒ Simple Switch Control Using Two Select Pins
Applications
ƒ 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 +85°C
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.
VCC _FSA805
R_HOST
L_HOST
RxD_HOST
TxD_HOST
DP_HOST
DM_HOST
R
3:1
MUX
and
Charge
Pump
DP_CON
DM_CON
GND
SEL[0]
SEL[1]
Switch
Control
© 2009 Fairchild Semiconductor Corporation
FSA805 • Rev. 1.0.0
Figure 1. Functional Block Diagram
www.fairchildsemi.com