
WirelessUSB LP 2.4 GHz Radio SoC
CYRF6936
Cypress Semiconductor Corporation
Document #: 38-16015 Rev. *G
198 Champion Court
San Jose
,
CA 95134-1709
408-943-2600
Revised April 2, 2007
Features
2.4 GHz Direct Sequence Spread Spectrum (DSSS) radio
transceiver
Operates in the unlicensed worldwide Industrial, Scientific
and Medical (ISM) band (2.400 GHz–2.483 GHz)
21 mA operating current (Transmit @ –5 dBm)
Transmit power up to +4 dBm
Receive sensitivity up to –97 dBm
Sleep Current <1
μ
A
Operating range: 10m+
DSSS data rates up to 250 kbps, GFSK data rate of 1 Mbps
Low external component count
Auto Transaction Sequencer (ATS) - no MCU intervention
Framing, Length, CRC16, and Auto ACK
Power Management Unit (PMU) for MCU/Sensor
Fast Startup and Fast Channel Changes
Separate 16-byte Transmit and Receive FIFOs
AutoRate - dynamic data rate reception
Receive Signal Strength Indication (RSSI)
Serial Peripheral Interface (SPI) control while in sleep mode
4 MHz SPI microcontroller interface
Battery Voltage Monitoring Circuitry
Supports coin-cell operated applications
Operating voltage from 1.8V to 3.6V
Operating temperature from 0 to 70°C
Space saving 40-pin QFN 6x6 mm package
Applications
Wireless Keyboards and Mice
Wireless Gamepads
Remote Controls
Toys
VOIP and Wireless Headsets
White Goods
Consumer Electronics
Home Automation
Automatic Meter Readers
Personal Health and Entertainment
Applications Support
See
www.cypress.com
for development tools, reference
designs, and application notes.
Functional Description
The CYRF6936 WirelessUSB LP radio is a second gener-
ation
member
of
Cypress’s
System-On-Chip (SoC) family. The CYRF6936 is interop-
erable with the first generation CYWUSB69xx devices. The
CYRF6936 IC adds a range of enhanced features, including
increased operating voltage range, reduced supply current in
all operating modes, higher data rate options, and reduced
crystal start up, synthesizer settling and link turnaround times.
WirelessUSB
Radio
Data
Interface
and
Sequencer
DSSS
Baseband
& Framer
SPI
Synthesizer
GFSK
Demodulator
GFSK
Modulator
IRQ
SS
SCK
MISO
MOSI
RF
P
RF
N
RF
BIAS
X
X
Block Diagram
RSSI
Xtal Osc
Power Management
L/D
V
REG
V
BAT
V
DD
RST
V
IO
PACTL
V
CC
GND
CYRF6936 Simplified Block Diagram
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