WirelessUSB LR™ 2.4-GHz DSSS Radio SoC
CYWUSB6935
Cypress Semiconductor Corporation
•
3901 North First Street
•
San Jose
, CA 95134
•
408-943-2600
Document #: 38-16008 Rev. *C
Revised March 17, 2005
1.0
Features
• 2.4-GHz radio transceiver
• Operates in the unlicensed Industrial, Scientific, and
Medical (ISM) band (2.4 GHz–2.483 GHz)
• –95-dBm receive sensitivity
• Up to 0dBm output power
• Range of up to 50 meters or more
• Data throughput of up to 62.5 kbits/sec
• Highly integrated low cost, minimal number of external
components required
• Dual DSSS reconfigurable baseband correlators
• SPI microcontroller interface (up to 2-MHz data rate)
• 13-MHz input clock operation
• Low standby current < 1 µA
• Integrated 30-bit Manufacturing ID
• Operating voltage from 2.7V to 3.6V
• Operating temperature from –40° to 85°C
• Offered in a small footprint 48 QFN
2.0
Functional Description
The CYWUSB6935 transceiver is a single-chip 2.4-GHz Direct
Sequence Spread Spectrum (DSSS) Gaussian Frequency
Shift Keying (GFSK) baseband modem radio that connects
directly to a microcontroller via a simple serial peripheral
interface.
The CYWUSB6935 is offered in an industrial temperature
range 48-pin QFN and a commercial temperature range 48-
pin QFN.
3.0
Applications
• Building/Home Automation
— Climate Control
— Lighting Control
— Smart Appliances
— On-Site Paging Systems
— Alarm and Security
• Industrial Control
— Inventory Management
— Factory Automation
— Data Acquisition
• Automatic Meter Reading (AMR)
• Transportation
— Diagnostics
— Remote Keyless Entry
• Consumer / PC
— Locator Alarms
— Presenter Tools
— Remote Controls
— Toys
Figure 3-1. CYWUSB6935 Simplified Block Diagram
Digital
Synthesizer
GFSK
Demodulator
GFSK
Modulator
IRQ
SS
SCK
MISO
MOSI
RESET
PD
DIO
DIOVA L
RFOUT
RFIN
SERDES
B
SERDES
A
DSSS
Baseband
A
DSSS
Baseband
B
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
