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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.
Availability
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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Check out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
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The development platform for i.MX 6Quad from element14 (built to the Freescale SABRE Lite design) is an evaluation platform featuring the powerful i.MX 6Q, a multimedia application processor with Quad ARM Cortex-A9 cores at 1.2 GHz from Freescale Semiconductor.
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December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.
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