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PRELIMINARY
WirelessUSB™ EX Radio
CYWUSB6941
Cypress Semiconductor Corporation
•
3901 North First Street
•
San Jose
, CA 95134
•
408-943-2600
Document #: 38-16004 Rev. *A
Revised June 10, 2003
1.0
Features
The Cypress CYWUSB6941 WirelessUSB™ EX radio trans-
ceiver is designed to work with the Cypress CYWUSB6942
WirelessUSB EX baseband controller to provide a complete
WirelessUSB EX solution. The CYWUSB6941 contains a
2.4-GHz radio transceiver, a GFSK modem, and a radio
control interface that communicates with the CYWUSB6942.
• Typically requires only eight external components for
ease of implementation and manufacturing
• -6-dBm (typical) transmit power for a transmission
range of up to 10 meters
• -82-dBm (typical) receive sensitivity
• Provides low-power operating modes to conserve
battery life
• 2.7V to 3.6V operation
• 7 x 5 x 1.2 mm 42-pin FBGA package
2.0
Applications
The CYWUSB6941 is targeted for the following Human Input
Device (HID) applications:
•Mice
• Keyboards
• Joysticks/Gamepads.
RFOUT
BRXD
Bias &
Pw r C ntr l
13M H z
XT L OSC
F requency
Offset
Cor rection
BMISO
BMOSI
BDCLK
BnDEN
RFIN
PA
Pow er
Con tr ol
PA CTL
LN A
TX
D ata In
4.8 GHz
T ransm itter
Up-C onver t
PA
FM
Demodulator
2.4GH z
PLL
I
Q
F/2
Block Diagram
Figure 2-1. CYWUSB6941 Block Diagram
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