DE9944 Product Preview

Product Preview
PP/9944/1 December 2013
DE9944
SDR Demonstrator
Software Defined Radio Demonstrator for FDMA Digital/Analogue PMR
Introduction
DE9944 Brief Description
FDMA (6.25 kHz) digital PMR is
an enabler to achieve highly
functional solutions by using low
cost and low complexity
technology.
The DE9944 is a compact demonstration platform for Narrowband FDMA
Digital/Analogue PMR Radio, providing a complete RF to baseband solution.
There are a number of FDMA
digital PMR technologies
available including: dPMR,
NXDN, ARIB STD-T98,
ARIB STD T-102, all providing the
best possible channel efficiency.
dPMR is an ETSI standard that
offers voice and/or data for peer
-to-peer through to complex
trunking applications. The dPMR
ETSI standards TS 102 490 and
TS 102 658 comply with the
Harmonised EN 301 166-2
Standard.
The DE9944 FDMA digital radio
SDR demonstrator provides the
fastest route from evaluation
through to production of a small,
highly integrated FDMA digital
PMR Radio.
Design Support
Available via the CML website:
 DE9944 SDR Demonstrator
 User manual
 Board schematics
 Board Gerber files
 BOM list
 Scripts
 Host ‘C’ code
 Individual Product Data
 CMX7141 Analogue/
The board is based on the CMX7141 FDMA PMR Processor and incorporates the CMX618
RALCWI Vocoder, the CMX7262 TWELP Professional Radio Vocoder, and the CMX994 Direct
Conversion Receiver. The board can be used to demonstrate a complete RF transceiver and
baseband function supporting a direct conversion receiver and VCO 2-point modulation
transmitter.
The DE9944 features a built in keyboard, display, microphone and speaker and so can be
used to demonstrate peer-to-peer operation in a stand-alone configuration. The board has an
ARM processor which handles initial board power up and loading of the Function Images for
the CMX7141 and CMX7262. Once the system is powered up, the processor implements basic
radio functionality (channel selection etc) and baseband control, allowing demonstration of a
simple voice call and data transfer.
The DE9944 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 301 166 for
dPMR applications and TIA-603-D / EN 300 086 for analogue applications. All the circuits are
provided with power-down capability to allow powersave / standby operation.
Feature Summary
 Direct Conversion Digital Radio Demonstrator
 Digital PMR (e.g. dPMR) and Analogue FM
 Provides demonstration platform for:
 Direct Conversion Receiver CMX994
 FDMA Radio Processor CMX7141
 TWELP Professional Radio Vocoder CMX7262
 RALCWI Vocoder with Integrated Voice Codec
CMX618
 Can function in the following modes
 Completely stand-alone
 Controlled by scripts running via PC
 User-defined host controller interface
digital PMR Processor
 CMX994 Direct
Conversion Receiver
 CMX7262 Professional
Radio Vocoder
 CMX618 RALCWI Vocoder
© 2013 CML Microsystems Plc
1
 On-board
 ARM Host Processor (Cortex M3)
 Frac-N PLL and VCO for 444 MHz
to 450 MHz Operation
 1W Power Amplifier
 Microphone
 Loudspeaker
 Jack sockets for audio in/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
J10
Antenna
© 2013 CML Microsystems Plc
2
VCO
(RF5110G)
PA
Interface Connector
Coax Connector
KEY
T/R
Loop
Filter
CMX994
RXI
RXQ
TX/RXEN
Ref Osc
J8 PA_Supply
Power
+3V3D
+3V3A
+3V3A_Rx_Tx
+3V3_VCO
Regulator
Regulator
Regulator
AuxDAC2
TX_MOD2
2
Regulator
3
4
Q
I
TXEN_RXEN
TX_MOD1
Serial (19.2MHz)
(Slave)
Frac-N
PLL
TXOUT LO IN CBUS
RXIN
RF
CBUS
(Master)
C-BUS
(Slave)
PTT
I/O
Keypad
4x4
I/O
I/O
UART
SSP
(Master)
Mic Audio
Modem
(CMX7141)
GPIO
Host:
(ARM Cortex M3
Internal Flash
and RAM)
AUX
DACs
MOD2 OUT
MOD1 OUT
Q in I in
Baseband
LCD: 2x16
characters
RS232 to USB
Generic Vocoder
Daughterboard
Connector
C-BUS
(Slave)
Audio
Out
TWELP Vocoder
(CMX7262)
Mic
PC GUI
3-Way Jumper
C-BUS
(Slave)
Audio
Out
RALCWI Vocoder
(CMX618)
Mic
3-Way
Audio Mux
Audio
PA
DE9944 SDR Demonstrator for FDMA Digital/Analogue PMR
Product Preview
Board Block Diagram
DE9944 SDR Demonstrator for FDMA Digital/Analogue PMR
Product Preview
For further details of the DE9944 SDR Demonstrator for FDMA Digital/Analogue PMR, please visit CML’s
website www.cmlmicro.com or just search for DE9944
CML’s proprietary FirmASIC® component technology reduces cost, time to market and development risk, with increased
flexibility for the designer and end application. FirmASIC® combines Analogue, Digital, Firmware and Memory
technologies in a single silicon platform that can be focused to deliver the right feature mix, performance and price for a
target application family. Specific functions of a FirmASIC® device are determined by uploading its Function Image™
during device initialization. New Function Images™ may be later provided to supplement and enhance device
functions, expanding or modifying end-product features without the need for expensive and time-consuming design changes. FirmASIC® devices provide
significant time to market and commercial benefits over Custom ASIC, Structured ASIC, FPGA and DSP solutions. They may also be exclusively customised
where security or intellectual property issues prevent the use of Application Specific Standard Products (ASSP’s).
FirmASIC , FirmCODEC , RALCWI, Function Image and DuraTALK are trademarks of CML Microsystems Plc.
TWELP is a trademark of DSP Innovations, Inc.
Phone:
+44 (0) 1621 875500
+1 336 744 5050
+65 62 888129
800 638 5577
Fax:
+44 (0) 1621 875600
+1 336 638 5577
+65 62 888230
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[email protected]
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Email Tech Support:
www.cmlmicro.com
© 2013 CML Microsystems Plc
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