DE9943 Datasheet, PDF (1/2 Pages) CML Microcircuits – SDR Demonstrator

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DE9943
SDR Demonstrator
Software Defined Radio Demonstrator for Two-slot TDMA Digital Radio
PP/9943/1 September 2013
Introduction
Two-slot TDMA Digital Radio is a
growing market leading the PMR
migration to digital technology.
Even though the market is very
competitive there with many
opportunities for newcomers to
enter, take advantage of latest IC
developments and release
leading edge products into the
market.
An easy development path to
assist the market newcomers is
essential. This is a key factor in
getting the end product to
market in the fastest possible
time.
The DE9943 SDR demonstrator
provides the answer, as it
simplifies the overall
development task.
The board is supplied with
support files to enable a quick
and easy transition to a
customer’s own end product
design.
Design Support
Available via the CML website
(www.cmlmicro.com)
 DE9943 SDR Demonstrator
 User manual
 Board schematics
 Board Gerber files
 BOM list
 Scripts
 Host ‘C’ code
 Individual Product Data
 CMX7161 TDMA Digital
Radio Processor
 CMX994 Direct
Conversion Receiver
 CMX7262 Professional
Radio Vocoder
Links
 www.cmlmicro.com
 DE9943 product page
 CMX7161 Product page
DE9943 Brief Description
The DE9943 is a compact demonstration/evaluation platform for 2-slot TDMA Digital
Radio designs incorporating the CMX7161 TDMA Digital Radio Processor, the
CMX7262 TWELP Professional Radio Vocoder and the CMX994 Direct Conversion
Receiver.
The DE9943 can be used to demonstrate a complete RF transceiver and baseband function
supporting a direct conversion receiver and VCO two-point modulation transmitter. The
board features a built in keyboard, display, microphone and loudspeaker and so can be used
to demonstrate DMR peer-to-peer operation in a standalone configuration.
The board has an ARM processor which handles initial board power up and loading of the
Function Images for the CMX7161 and CMX7262. Once the system is powered up, the
processor will handle basic radio functionality (channel selection etc) and baseband control,
allowing demonstration of a simple voice call and data transfer.
The DE9943 provides a Fractional-N PLL and VCO plus associated circuits to provide local
oscillator signals for the CMX994. The design also includes a 1W power amplifier, harmonic
filter and Tx/Rx switch. The RF performance is designed to be compliant with EN 300 113 and
all the circuits are provided with power-down capability to allow standby functionality.
Feature Summary
 Direct Conversion Digital Radio Demonstrator  On-board
 Provides a demonstration platform for:
 ARM Host Processor (Cortex M3)
 Direct Conversion Receiver CMX994
 TDMA Radio Processor CMX7161
 TWELP Professional Radio Vocoder CMX7262
 Can function in the following modes
 Completely stand-alone
 Controlled by scripts running via a PC
 User-defined host controller interface
 Designed to meet ETSI EN 300 113
 ‘C’ code for rapid development of host drivers
 Frac-N PLL and VCO for 444 MHz
to 450 MHz Operation
 1W Power Amplifier
 Microphone
 Loudspeaker
 Jack sockets for audio in/audio
out
 16-button (4 x 4) Keypad
 2 x 16-character LCD Display
 Powered by external 4.5V power supply or 3 x
AA batteries
© 2013 CML Microsystems Plc
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