Low-power digital PMR processor adds new function images
June 14, 2012 // Paul Buckley
CML Microcircuits has added dPMR (Digital Private Mobile Radio) modes 1, 2 and 3 and ARIB STD-T102 to the CMX7131 and CMX7141 digital PMR processors.
The devices are now market-leading digital PMR processors supporting six systems and growing; dPMR TS 102 490, DCR ARIB-T98, NXDN, Analog PMR and now dPMR TS 102 658 and ARIB STD-T102.
The dPMR Mode 1, 2 and 3 Function Image implements a half-duplex 4FSK modem and a large proportion of the dPMR Air Interface, Data Link and Call Control layers. In conjunction with a suitable host and a limiter/discriminator-based RF transceiver, a compact, low-cost, low-power digital PMR radio conforming to ETSI's dPMR standard TS 102 658 can now be realised.
The 7131/7141FI-2.x Function Image implements a half-duplex 4FSK modem and a large proportion of the DCR Air Interface, Data Link and Call Control layers. In conjunction with a suitable host and a limiter/discriminator based RF transceiver, a compact, low cost, low power digital PMR radio conforming to ARIB’s T98 Digital Convenience Radio standard can be realised. Dual mode, analogue/digital PMR operation can also be achieved with the CMX7131/CMX7141.
The embedded functionality of the CMX7131/CMX7141 managing voice and data systems autonomously, including CMX6x8 Vocoder control, minimises host microcontroller interactions enabling the lowest operating power and therefore the longest battery life for a dPMR radio. Third party vocoders are also supported.
The CMX7131 is identical in functionality to the CMX7141 with the exception that two on-chip RF synthesisers have been added.
The devices are available now, have flexible power-saving modes and are available in both LQFP and VQFN packages.
Visit CML Microcircuits at www.cmlmicro.com
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Internet of Things (IoT) manufacturer Ciseco has launched the Raspberry Pi ‘Wireless Inventors Kit’ (RasWIK), featuring 88 pieces to provide everything a Pi owner needs to follow a series of step-by-step projects or to create their own wireless devices, without the need for configuration or even writing code.
RasWIK has been designed to be highly accessible, demystifying the dark art of wireless and enabling anyone with basic computing skills to begin building wireless devices with a Raspberry Pi. You can create anything from a simple traffic light, to a battery monitor, or even a temperature gauge that sends data to the Xively IoT cloud so billions can access the data.This month, Ciseco is giving away twelve Raspberry Pi Wireless Inventors kits, worth £49.99 each for EETimes Europe's readers to win.
And the winners are...
In our previous reader offer, Farsens was giving away five kits for EEtimes Europe readers to evaluate its FenixVortex, Kineo and X1 wireless, battery free sensor tags.
Lucky winners include Mr A. Neil from the UK, Mr. E. Delvaux from Belgium, Mr Lengal from the Czech Republic, Mr H. Bijlsma from the Netherlands, and Mr G. Pfaff from Germany. All should be receiving their packages soon. Lets wish them some interesting findings with their projects.
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