Product category:
Communications ICs (Wired)
News Release from: Flint | Subject: CMX860
Edited by the Electronicstalk Editorial
Team on 28 March 2001
Ultra-low-power telephone signalling
transceiver
The latest addition to Flint's range of telecomms ICs is an ultra-low-power telephone signalling transceiver IC targeted at line-powered least-cost routing equipment and similar applications.
The latest addition to Flint's range of telecomms ICs is an ultra-low-power telephone signalling transceiver IC targeted at line-powered least-cost routing equipment and similar applications The CMX860, developed by Consumer Microcircuits Limited (CML), is designed to meet the specific demands of today's second-generation routers, which can manage call routing to a number of different telecom operators
This article was originally published on Electronicstalk on 24 Aug 2005 at 8.00am (UK)
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Traditional routers use DTMF signalling to transfer the information required to and from the router, but this can be too slow where routing tables are large and need frequent updating.
V.23 signalling becomes a necessity.
CLI also becomes important as it allows the router to be dialled into from the telecom operator or virtual operator.
The CMX860 is the first solution to combine on a single-chip the functions of a DTMF and V.23 encoder and decoder, together with call progression circuitry and caller ID CAS tone detector.
Control is facilitated via a simple high-speed serial control bus that ensures a highly efficient interface with the host microcontroller.
Designed to operate at 3V, 4mA (2.7V, 3.5mA min) the CMX860 uses CML's low-power DTMF and V.23 modem technology.
In addition to low cost routers and least cost routers, the device's ultra low-power capability and 'zero power' sleep mode make the CMX860 the perfect solution for embedded modem applications such as vending machines, alarm systems, home management systems, remote meter reading and internet appliance applications.
Compared with high-speed modems, the V.23 CMX860 offers a smarter solution, because the longer call setup time of high-speed protocols makes the initial cost, telephone time and power overhead less cost effective when transmitting small packets of data.
Flint has the CMX860 available immediately, with packaging in a compact 28-pin SSOP.
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