Recognising the growing need to protect communication systems from the threat of being compromised by unauthorised parties, CML Microcircuits has introduced the CMX7158. Based on the company’s proprietary FirmASIC® technology, so as to facilitate configuration, this compact user-programmable scrambler IC is optimised for inclusion in multi-function audio systems, as well as handheld wireless/cellular equipment.
Maintaining elevated levels of audio quality, it can rapidly switch between clear and scrambled voice modes via a programmable frequency inversion point, with minimal delay being experienced. Furthermore, its completely independent Tx and Rx signal paths mean that this IC is capable of full duplex operation.
Thanks to FirmASIC, a Function Image™ is generated in which the CMX7158’s functional parameters are defined. This is loaded to the system upon power-up/device initialisation – either from the system’s host microcontroller (across the C-BUS interface) or through an attached serial flash memory. Dual-tone multi-frequency (DTMF) encode/decode, Selcall signalling and VOX detection on both channels are among the other main features encompassed.
Key applications for the CMX7158 include cellular radio accessories. Bluetooth headsets, wired/wireless access control systems, plus private mobile radio (PMR) and land mobile radio (LMR) radio hardware, as well as legacy wireline telephony. Supplied in a space-saving 48-pin VQFN package, it supports low power operation (drawing from a 3.0V-3.6V source, with power conserving modes available). The numerous analogue audio interfaces incorporated make integration into existing system designs very straightforward. To assist engineers during the development process, CML offers the PE0402 evaluation board to accompany the CMX7158.
About CML Microcircuits
CML Microcircuits is a world-leader in the design, development and supply of low-power analogue, digital and mixed-signal semiconductors for telecommunications systems globally.
The company’s wide and varied portfolio means that CML devices are used in an extensive range of industrial and commercial products for licensed and unlicensed wireless voice and data systems.
Focusing on narrowband communications, CML’s ICs are found in digital/analogue PMR/LMR, wireless data, satellite communications and marine radio applications, such as TETRA, DMR, dPMR, SCADA systems and Marine communications. The CML portfolio provides components supporting both RF and baseband functionality, encompassing both leading edge digital and legacy analogue systems.
In addition to our established range of devices, we are able to offer bespoke solutions to customers. This service includes design assistance, advice and first class technical support. Our FirmASIC® approach enables us to produce the optimum solution to a given design requirement. The outcome is a product offering that embraces a number of key technologies and delivers the result cost-effectively with fast time to market, ultimate flexibility and low risk.
CML Microcircuits is a member of the CML Microsystems Plc. Group of companies.