Full-duplex/half-duplex multi-transcoder IC targets VoIP

April 20, 2016 // By Julien Happich
CML Microcircuits has released a new CMX7261 Function Image implementing the G.723.1 digital voice coding algorithm of VoIP applications.

The CMX7261 provides a complete end to end function with dual channel encoding, decoding, transcoding with no external DSP or DSP skills required. The device is well suited to software-defined radio (SDR), voice-over IP (VoIP) applications, wireless private branch exchange (PBX) and digital voice interconnect systems.

Two Function Images covering Linear PCM, G.711, G.729A and CVSD algorithms and Linear PCM, G.711 and G.723.1 algorithms are available, making the device very flexible and with the ability to deliver high quality speech for a large number of applications without sacrificing performance. Providing complete analogue to digital, digital to analogue or digital to digital conversion, the CMX7261 guarantees quality audio and ensures the shortest equipment design cycle.

The device is built on CML’s FirmASIC technology, providing a platform for potential future enhancements. Other key features include voice activity detection, C-BUS (SPI compatible) host serial control/data interface, multiple choice of input and output sources, streaming transfers, GPIO and encoder/decoder test mode support that allows verification of bit exactness and high audio quality for supported codecs. The CMX7261 operates from a 3.3V supply and includes selectable power-saving modes and is available in small 64-pin VQFN/LQFP packaging.

Visit CML at www.cmlmicro.com