CMX7011 CML Microcircuits Digital Voice Processor COMMUNICATION SEMICONDUCTORS D/7011 FI1.x/7 January 2020 DATASHEET Provisional Issue 7011FI-1.x: Digital Voice Encryption for Analogue Radio Systems Features Applications Digital voice security on analogue PMR channels Real-time voice security (12.5kHz/25kHz) Simple interfacing, via audio connections, to existing Voice encryption on analogue PMR radios PMR radio Ultimate in high-level analogue radio security Secure wireless door access and gate entry systems Embedded RALCWI Vocoder (supplied under licence and royalty free) Providing the digital advantage on analogue radio systems Embedded audio-band modem A Plug and Play device (the CMX188) can Built in robust over-air data protocol with good tolerance be made available for high quantity to bit errors applications Ultimate in high-level analogue radio security Real-time digital voice encryption with user-programmable 16-bit encryption keys External voice data routing option Programmable instant voice capture eliminating PTT clipping Voice storage and retrieval with step back feature Packet data with user-programmable packet data size Flexible 256 address programming Late entry operation, provides optimum performance in fading conditions Small 48-pin LQFP/VQFN package options CMX7011 Digital Voice Processor Air Interface Microcontroller Audio Audio Signal Codec Voice Data Coding Input Digital Audio-band Gain Vocoder Packet Data Coding Data Modem Optional Control Audio Signal Digital Serial Flash Real-time Encryption Output Filters Voice Storage/Retrieval Power Registers and Control Interface 2020 CML Microsystems Plc Digital Voice Processor CMX7011 1 Brief Description The CMX7011 is a flexible, half duplex, digital voice processor specifically designed for digital voice encryption applications that transmits and receives secure voice via an embedded robust data modem for use within an analogue PMR. The device allows simple implementation and configuration within existing designs and is intended to be added to a radio via an accessory module or feature socket. The device is simple to control via a small, low-power microcontroller. The CMX7011 offers better quality speech than that of traditional analogue radios at the fringes of reception and, using the internal digital encryption 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 a low bit rate. One of the most significant features in the CMX7011 s design is the programmable push-to-talk (PTT) buffer which offers instant voice capture in transmit mode. The PTT buffer temporarily stores the initial part of the speech and can therefore eliminate clipping that can be caused by the time taken to decode sub audio signals like CTCSS and system delays caused by repeaters. Within the CMX7011 s header frame is a user- programmable 8-bit address field which allows up to 256 individual user addresses to be defined. The device includes programmable voice storage and retrieval with step-back feature which permits storage of a minimum of 20 seconds of vocoded speech in receive mode. Packet data enables secure data transfer with CRC and optional interleaving of data bits with user- programmable packet data size. Late entry allows a receiving radio to re-join a call after recovering from fading conditions Note that text shown in pale grey indicates features that will be supported in future versions of the device. This Data Sheet is the first part of a two-part document. 2020 CML Microsystems Plc 2 D/7011 FI1.x/7