EV8380 Datasheet, PDF (2/29 Pages) CML Microcircuits – Family Radio Processor

Evaluation Kit for CMX838 Family Radio Processor
2
EV8380 User Manual
CONTENTS
Section ..........................................................................................................................Page
1 Preliminary Information ................................................................................................ 4
1.1 Laboratory Equipment........................................................................................................... 4
1.2 Handling Precautions............................................................................................................ 4
1.2.1 Static Protection...................................................................................................................... 4
1.2.2 Contents - Unpacking ............................................................................................................. 4
2 General Description ...................................................................................................... 4
3 Operation ....................................................................................................................... 4
3.1 Setting-Up............................................................................................................................. 4
3.2 EV8380 Graphical User Interface (GUI)................................................................................ 6
3.2.1 General Comments................................................................................................................. 6
3.2.2 Starting the EV8380 GUI ........................................................................................................ 6
3.2.3 EV8380 GUI Buttons and Text Boxes .................................................................................... 6
3.2.4 EV8380 GUI Examples: Direct Register Operations .............................................................. 7
3.2.5 EV8380 GUI Examples: Using Text Script Files with the “SEND FILE” Utility ....................... 7
3.2.6 Creating EV8380 Text Script Files ......................................................................................... 7
3.3 EV8380 External Connections ............................................................................................ 10
4 General Notes.............................................................................................................. 11
4.1 Baseband Clock Generation ............................................................................................... 11
4.1.1 Using the RF Reference Oscillator as the CMX838 Clock Source....................................... 11
4.1.2 Using External Sources as the CMX838 Clock Source........................................................ 11
4.2 Subaudio Processing .......................................................................................................... 12
4.2.1 Power-Up Initialization Sequence for CMX838 .................................................................... 14
5 Programming Examples ............................................................................................. 14
5.1 Device Setup ...................................................................................................................... 14
5.2 Tone Signaling Processor Examples .................................................................................. 17
5.2.1 How to Generate a Standard CTCSS Tone ......................................................................... 17
5.2.2 How to Generate A User-Defined TX Subaudio Tone.......................................................... 17
5.2.3 How to Generate an Audio Tone at the AUX I/O Pin............................................................ 17
5.2.4 How to Detect a Standard CTCSS Tone .............................................................................. 18
5.2.5 How to Quickly Enable/Disable Multiple Detectors............................................................... 19
5.2.6 How to Detect a User-Defined Subaudio Tone .................................................................... 20
5.3 Audio Filtering Examples .................................................................................................... 21
5.3.1 How to Generate “Melody Tone” And Process It with the CMX838 ..................................... 21
5.3.2 How to Use Pre-Emphasis/De-Emphasis ............................................................................. 21
5.4 RF Programming Examples ................................................................................................ 22
5.4.1 How to Change an FRS RF Channel ................................................................................... 22
5.4.2 How to Set the IF Offset For A FRS RX Channel................................................................. 22
5.5 Modulation Section Programming Example ........................................................................ 22
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