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. 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