ADNK-3043-ND24
2.4GHz RF Wireless USB Optical Mouse Designer’s Kit
Design Guide
Introduction
This design guide describes the design of a low power
consumption optical mouse using the Texas Instrument
MSP430F1222 microcontroller, the Avago ADNS-3040
optical sensor and a Nordic nRF2402 2.4 GHz transmit-
ter. The receiver dongle is implemented with a Nordic
nRF2401 in conjunction with a Cypress CY7C63231 USB
controller. The document discusses the reference design
hardware and the firmware implementation. Included
in Appendix A is the schematic for this reference design
mouse. The software section of this document describes
the architecture of the firmware required to implement
the mouse functions. The MSP430F1222 data sheet is
available on the TI web site at www.ti.com. The ADNS-
3040 data sheet is available from the Avago web site at
www.avagotech.com. USB controller data sheet can be
found on the Cypress web site: www.cypress.com. The
Nordic transmitter and receiver data sheets are available
on www.nordicsemi.no
Key reference design objectives:
1. Highlight the low-power benefit of the ADNS-3040
2. Demonstrate a design with a RF daughter board to
facilitate experimentation with different RF technolo-
gies
3. Feature a Flash-based development environment to
facilitate rapid firmware changes
Features
•
Complete LED mouse reference design kit
•
Windows® 98SE, Windows 2000 and Windows XP
compatibility
•
USB 1.0 low-speed compliance
•
User identity code to avoid conflict with other de-
vices
•
High reliability
•
Smooth surface navigation
•
Enhanced SmartSpeed self-adjusting frame rate for
optimum performance
•
High speed motion detection up to 20 ips and 8 G
•
800 cpi resolution
•
No mechanical moving parts
•
A high data rate 2.4GHz RF link
•
Transmission data rate up to 1Mbps
•
15 meters communication distance
•
Self-adjusting power-saving modes for longest bat-
tery life
•
Minimal number of passive components
