Section 4. Optical Mouse Transmitter; Introduction; System Overview - Motorola M68HC08 Designer Reference Manual

Designer Reference Manual — DRM055

4.1 Introduction

4.2 System Overview

NOTE:
High Data Rate Wireless USB Optical Mouse Solution
MOTOROLA
Freescale Semiconductor, Inc.
The features of the high data rate wireless USB optical mouse solution include
an internal oscillator circuit which can generate a clock of 12.8 MHz with no
external components needed. The auto wakeup module generates a periodic
interrupt during stop mode to wake the part up without requiring an external
signal. These features make the QY4 MCU suited for wireless optical mouse
applications.
The main features of the reference design include:
• 27-MHz RF transmitter
• 4.8-kbps transmission data rate
• 800-DPI resolution
• Smart power management
The mouse transmitter consists of:
• The QY4
• The Agilent optical mouse sensor (ADNS-2030)
• The RF front end
Refer to Figure 4-1 for a block diagram of the system.
RF data is transmitted by means of setting and clearing the RF_Data and the
RF_Off pin.
Optical Mouse Transmitter
For More Information On This Product,
Go to: www.freescale.com

Section 4. Optical Mouse Transmitter

DRM055
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