CML Microcircuits (CML), an innovator and provider of low-power semiconductors for global communications markets, has introduced a half-duplex audio, signalling and data processing IC for use in Marine VHF radio systems. It is available from Caelera in Australia.
The new CMX885 Marine VHF baseband processor is designed to meet the global requirements of low cost, highly integrated marine VHF transceivers by offering audio processing with selectable audio processing order.
The CMX885 baseband processor is the complete marine world audio and signalling solution with inband signalling capabilities including DSC, ATIS, DTMF, NWR WAT and SAME. The CMX885's embedded functionality also allows a small, low power, low cost host microcontroller to be utilised as part of the overall marine VHF transceiver system.
Features include digital gain control, pre/de-emphasis, filtering, soft limiting and voice scrambling options. Suitable for both portable and fixed (maritime) mobile transceivers, the CMX885 utilises dual Rx channel operation for DSC class D conformance. The product also boasts a 1200bps Digital Selcall (DSC) modem with protocol support and an Automatic Transmitter Identification System (ATIS) modem, as well as NOAA weather radio decoding support.
A compliment of auxiliary ADCs, DACs and dual synthesised clocks is included in this low power marine VHF processor. A minimum of external components is required for the device that also offers flexible powersaving modes. The CMX885 baseband processor operates between 3.0V and 3.6V and is available in 48-pin VQFN and LQFP packages.
The CMX885 baseband processor operates between 3.0V and 3.6V and is available in 48-pin VQFN and LQFP packages.