CML Microcircuits
COMMUNICATION SEMICONDUCTORS
AN/2WR/7031/FRS/3 July 2007
1 Introduction
The CMX7031 is a highly integrated baseband processor that is targeted at analog two way radio
applications. Professional and leisure radio designs can benefit from the extensive functionality, low
power consumption, and aggressive pricing offered by the CMX7031. Additionally, the ability to
enhance its functions through updated Function Image™ files allows the CMX7031 to offer enhanced
features for no additional cost.
The purpose of this application note is to illustrate how the CMX7031 can be configured for a feature
rich "family radio" product. This document will describe how the CMX7031 can be configured to
perform the following functions:
•
Half Duplex voice communications
•
Text Messaging (both open and private messages)
•
GPS location data
•
Unique 'ring tones'
•
Audible alerting tones, for example indicating when a button has been pressed
•
'All Call' (urgent) call capability
•
RF Synthesizer configuration
•
System clock configuration
This document reflects the CMX7031 device functionality after being loaded with Function Image 1.3.
Use of this document with other Function Images™ may result in undesired operation. Discussion of
Function Image™ loading procedures is beyond the scope of this document and is fully discussed in
the CMX7031 datasheet.
The following information should be consulted while reviewing this application note:
1. CMX7031 Datasheet
2. CMX7031 User Manual
3. CMX7031 Synthesizer Calculator Application Note and Spreadsheet
© 2007 CML Microsystems PLC
Application Note
An Example Core Design for a
Complete Family Radio
1 of 28
CMX7031:
AN/2WR/7031/FRS/3 July 2007
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