Section 8. Testing And Customization; Testing; Hardware Customization; Optical Mouse Transmitter - Motorola M68HC08 Designer Reference Manual

Designer Reference Manual — DRM055

8.1 Testing

8.2 Hardware Customization

8.2.1 Optical Mouse Transmitter

High Data Rate Wireless USB Optical Mouse Solution
MOTOROLA
Freescale Semiconductor, Inc.
This solution was tested under different Windows Operating Systems on
several different PCs for USB compatibility. These tests included:
• USB compliance test using Command Verifier, Version 1.2
• Compatibility tests under Windows 98SE, 2000, and XP
• Compatibility tests under AMD 750, Intel 810 and 845 chip set desktops,
and IBM Thinkpad T23, DELL Latitude C640
The integrity of the RF data link between the mouse and receiver had been
verified by recording the actual USB report from the receiver to host.
A test had been setup where the mouse transmitter was sending some
pre-defined RF data continuously. At the receiver side, an USB analyzer had
been connected between the JB12 and the host computer. The analyzer
captured the USB data from the JB12 to host PC. The captured data was then
compared with pre-defined data from the mouse.
These tests showed that the JB12 solution can achieve an average valid USB
data report rate of about 10 ms without loss of any data from the transmitter
side. Refer to Figure 8-1.
The step-up DC-to-DC converter (NCP1400ASN33T1) is for reference only,
customers can choose any regulator they prefer. The LEDs for the sensor and
ZLED can be connected to the regulator output or connected to the batteries
output. The advantage of connecting to the regulator output is that the system
can work in a lower voltage, but the drawback is higher current consumption.
The advantage of connecting to the batteries output is the lower power
consumption but the system will not work properly if battery voltage is below
2.5 V.
Testing and Customization
For More Information On This Product,
Go to: www.freescale.com

Section 8. Testing and Customization

DRM055
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