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CMX885 Marine VHF Audio and Signalling Processor IC

CMX7031, CMX7041 Two-Way Radio Processor: Voice, Signalling and Data

EV8850 EvKit for Marine VHF Audio and Signalling Processor IC


CML's Integrated Products for Marine Communications
CML's IC products offer highly integrated baseband and RF features
Products for Marine VHF Communications
CML Microcircuits offers an increasing range of ICs in the support of marine safety equipments. For marine communication equipments we offer baseband processor ICs, such as the CMX885, a dedicated Marine VHF Audio and Signalling Processor IC, and the CMX7031 and CMX7041 Two-way Radio Processor ICs Offering Voice, Signalling and Data Functions.

This dual Rx/Tx device (audio and marine DSC) includes comprehensive voiceband processing and in-band signalling in partnership with NOAA weather-radio decoding features.

System Clocks, ADCs and DACs are also available on chip for complete support of the host system, with the CMX7031 offering two on-chip RF synthesisers.

In addition to marine communications ICs, CML offers the following services:

  • Design solutions for DSC channel receivers and transmitters
  • Help desk teams to support designs
  • Product design consultancy
  • Consultancy on marine VHF radio and safety systems

A VHF marine radio is an essential piece of equipment in both coastal and deep-water operations. It allows instant communication between your vessel and other vessels, marinas and bridges.
It is the primary means of communication on the water and has many characteristics, which make it preferable to a mobile phone, CB Radio, or other means of communication.

CML provides complete world voice signalling and data solutions, supporting DSC, ATIS, DTMF, NWR WAT and SAME, as well as dPMR, PMR and Trunked radio.

< < < < < Please use the links on the left to view the relevant product overview page.

Product Comparisons
Product Voice Processing Tone Signalling RF Support Interface Data Auxiliary Supply
CMX885
Marine VHF Audio and Signalling Processor 		Full
Tx and Rx		 Audio Tone,
DTMF and NOAA NWR, SAME		   Analogue I/P
/Two-point Mod. O/P		 DSC/ATIS (FSK) ADCs, DACs
and System Clocks		 3.0 to 3.6 V
CMX7031
Two-way Radio Processor
FI-1.x 		Full
Tx and Rx		 CTCSS, Selcall,
DTMF and NOAA NWR		 2 x RF Synths Analogue I/P
/Two-point Mod. O/P		 FFSK/MSK ADCs, DACs
and System Clocks		 3.0 to 3.6 V
CMX7041
Two-way Radio Processor
FI-1.x 		Full
Tx and Rx		 CTCSS, Selcall,
DTMF and NOAA NWR		   Analogue I/P
/Two-Point Mod. O/P		 FFSK/MSK ADCs, DACs
and System Clocks		 3.0 to 3.6 V

Evaluation Example
The EV8850 Evaluation Kit is designed to assist in the evaluation and application development using the CMX885 Marine VHF Audio and Signalling Processor.
The kit is in the form of a populated PCB comprising a CMX885 IC and appropriate supporting components and circuitry.

The board incorporates all of the necessary power-supply regulation facilities for operation from a single 5-volt supply.
The board is fitted with a C‑BUS connector allowing the EV8850 to be operated by connection to either of the two C‑BUS ports on a CML PE0002 Interface Card, and used with the associated PC GUI software, or by direct connection between the CMX885 C‑BUS and the user's µC development application or emulation system.

For further technical details, please navigate to either the CMX885 overview page or the EV8850 overview page .

EV8850 Evaluation Kit: designed to assist in the evaluation and application development of the CMX885 Marine VHF Audio and Signalling Processor IC

Glossary
ATIS Automatic Transmitter Identification System.
AtoN Aids to Navigation.
Baseband The band of frequencies which is modulated onto a carrier or sub-carrier in a wire or transmission medium to form the transmitted signal.
DSC Digital Selective-Calling - Data signalling system used as the primary emergency channel for marine applications.
DTMF Dual Tone Multi-Frequency: generally, a telephone signalling system employing four tones from a low group, and three or four tones from a high group, comprising twelve to sixteen unique tone pairs.
Galileo A radio satellite navigation system developed by the European Union and the European Space Agency.
IMO International Maritime Organisation.
ITU-R M1371 ITU-R Standard outlining the system parameters for AIS.
ITU-R M.493 ITU Standard for DSC.
MMSI Maritime Mobile Service Identity.
NOAA National Oceanic and Atmospheric Administration (USA).
NWR NOAA Weather Radio.
SAME Specific Area Message Encoding.
SART Search and Rescue Transponder.
Simplex A circuit which can communicate information in a channel in one direction only.
SoTDMA Self-organising Time Division Multiple Access: the signalling scheme used in all AIS class A transponders.
VDL VHF Data Link.
VHF Very High Frequency: ITU band 8, generally accepted as the range: 30 to 300 MHz, that includes the maritime mobile band.
WAT Warning Alarm Tone.