dPMR processor also offers analog support

23 January 2008 Telecoms, Datacoms, Wireless, IoT

CML Microcircuits has launched the CMX7141, a highly integrated and adaptable digital private mobile radio (dPMR) processor built on proprietary FirmASIC technology. The incorporation of FirmASIC technology allows the product's function and feature set to be configured via special Function Image data files. These are uploaded during device initialisation, either automatically from an external EEPROM or via a host microcontroller over the built-in C-BUS serial interface.

The CMX7141 utilises a limiter discriminator-based RF transceiver and includes dual-mode capability for interoperability with legacy analog PMR systems, so as to provide conventional CTCSS/DCS PMR services. Conforming to ETSI dPMR Standard TS102-490 and general digital PMR in 6,25 kHz and 12,5 kHz channels, the device is adaptable to a broad range of radio design requirements.

The CMX7141 offers both Air interface physical layer (Layer 1) and Air interface data link layer (Layer 2) for dPMR, a 4-level FSK modem with soft decision decoding, vocoder connectivity, along with auxiliary ADCs and DACs. It operates from a single 3,3 V supply with flexible power-save modes and is available in a 48-pin VQFN or LQFP package.

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