New Telecom Signalling Device Offers Designers Increased Flexibility

Maldon, Essex, UK -- (ReleaseWire) -- 02/16/2007 --CML’s new CMX865A DTMF codec and telecom signalling combo gives designers increased flexibility when designing new-generation telemetry and telephone based information systems. The low-cost CMX865A offers advanced performance and low power requirements in a small footprint package, making it ideal for Wireless Local Terminals (FCT/FWT/WLL), Private Branch Exchanges (PBXs) and Alarm and Monitoring applications.

The CMX865A offers multi standard signalling capabilities, with data applications being facilitated by a flexible V.23/V.21 FSK (plus Bell equivalent) on-chip modem. Flexible line driver, hybrid and receiver circuits are integrated on-chip, requiring only passive components to build a 2 or 4-wire line interface. A high-quality DTMF decoder offers excellent immunity to falsing on voice and a standard DTMF encoder are included to expand the range of applications suited to the CMX865A.

Host control and data transfer is via a high-speed serial bus that operates in normal and powersave modes, compatible with most simple types of microcontroller serial interface. An embedded USART allows multi-format asynchronous data and unformatted synchronous data to be received or transmitted as 8-bit bytes.

The CMX865A operates from a single 3.0V to 3.6V supply over a temperature range of -40°C to +85°C and is available in 16-pin SOIC (D4) or 16-pin TSSOP (E4) packages.

The 10k-piece OEM guide price is $1.34 (US). Full product specifications, reference design information and the advanced features of the CMX865A are available from the CML website

Media Relations Contact

Mark Channen
Marcoms Officer
CML Microcircuits
44 01621 875500

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