CMX7011 - Digital Voice Scrambler for Analogue Radio Systems
The CMX7011 is a flexible, half duplex, digital voice processor specifically designed to implement a digital voice scrambler for use with conventional radio communication systems including analogue professional mobile radio, wireless door access and gate entry systems.
The need for secure voice communication has become an important requirement for
wireless communication. With new communication systems moving towards the
digital domain which inherently provides voice security, the widely-used legacy
analogue systems are being left behind. A number of analogue voice privacy
systems are available today, based on frequency inversion techniques that
provide a level of security. In many applications higher levels of voice
security are required whilst remaining on lower-cost, widely available analogue
radio systems.
Digital scrambling is the answer, providing the highest level of voice security
and the advantage of digital voice. The CMX7011 provides the solution with an
embedded state-of-the-art, low-cost, low-bit rate Vocoder combined with a robust
audio-band voice data modem.
The device allows simple implementation and configuration within existing
designs and is intended to be added to a radio via an accessory port or ‘feature
socket’. The CMX7011 offers good quality speech and, using the internal digital
scrambling algorithm, significantly higher levels of security are achieved.
Built in to the CMX7011 is CML's proven and reliable RALCWI (Robust Advanced Low
Complexity Waveform Interpolation) vocoder providing near toll quality speech at
low bit rates. The CMX7011 also offers ‘instant voice capture’, featuring
push-to-talk (PTT) buffering eliminating clipping in PMR applications. New
features and enhancements to existing functions may be provided in future, via
Function Images™, expanding the capabilities of the device.
The CMX7011 offers the designer excellent performance, flexibility and a fast
time-to-market. The CMX7011 operates at 3.0V to 3.6V and comes in a 48-pin LQFP
or VQFN package.
For a datasheet, application notes and product support information, visit
CML.
20120505016.5.2012ТелекоммуникацияCML Microcircuits