Analogue Radio ICs - Two way Radio Baseband Processor ICs

Product catalog summary

Overview: This document provides a comprehensive overview of CML Microcircuits' communication semiconductors, focusing on products like CMX7031, CMX7041, CMX808A, CMX838, CMX881, and CMX882. These are designed for analogue radio systems, offering features such as audio processing, signalling, and data functions.

Key Products and Features:

CMX7031 and CMX7041: Versatile two-way radio processors with FirmASIC® technology, supporting baseband processing, 4-level FSK, and C4FM data, including auxiliary ADCs, DACs, RF synthesisers, and system clocks.
CMX881 and CMX882: Baseband processors for PMR and trunked radios, supporting voice and data transport.
CMX838: Processor for family radios with CTCSS and audio processing.
CMX808A: CTCSS encoder/decoder with flexible sub-audio configurations.

Technological Advantages:

FirmASIC® Technology: Integrates analogue, digital, firmware, and memory technologies for flexibility and reduced costs.
High Integration: Reduces component count and microcontroller overhead.
Low Power Requirements: Features dynamic power-saving capabilities.

Functional Capabilities:

Audio Processing: Includes pre-emphasis, compression, scrambling, and filtering, compliant with ETS-300-086 and TIA/EIA-603.
Signalling: Supports inband, sub-audio, and combination signalling functions like DTMF, Selcall, CTCSS, DCS, and XTCSS.
Data Functions: Offers modems for FFSK/MSK, Marine DSC FSK, and NWR SAME AFSK with selectable data rates.

Applications: Suitable for PMR, LMR, P25, trunked systems, leisure radios, marine VHF, aviation communications, amateur, and weather radios.

Conclusion: CML Microcircuits' ICs provide versatile and integrated solutions for analogue radio systems, leveraging FirmASIC® technology for flexibility and efficiency.

Specifications: CMX7031 and CMX7041 support FFSK/MSK, 4-Level FSK, and C4FM, with programmable data rates and error correction. Compatible with Function Image™ standards FI-1.x, FI-2.x, and FI-3.x.

Procedures: Describes XTCSS for private channels and Tone Cloning™ for radio configuration automation.

Signal Interfacing: Features flexible routing with multiple inputs/outputs, programmable amplifiers, and adjustable gain settings.

Data Functions: Includes packet data assembly, GPS handling, and DSC for marine applications.

Auxiliary Functions: Includes auxiliary DACs and ADCs, low-power requirements, and dynamic power-saving options.

System Control: Managed via C-BUS serial interface, with Function Image™ files for versatile setup.

CMX838 Family Radio Processor: Integrates sub-audio, audio, and synthesizer functions for FRS, PMR446, and GMRS radios, with features like group calling and 'Tone Cloning™'.

CMX808A CTCSS 'Type 2' Encoder/Decoder: Offers full CTCSS 'Type 2' compatibility, fast tone decode, and low power operation.

Design Resources and Support: Technical datasheets, user manuals, application notes, evaluation kits, and support through CML distributors and portals.

Contact Information: CML Microcircuits provides contact details for offices in the UK, USA, Singapore, and Shanghai.

Catalog excerpts

Analogue Radio ICs - Two way Radio Baseband Processor ICs-1

CML Microcircuits COMMUNICATION SEMICONDUCTORS Analogue Radio ICs Two-Way Radio Baseband Processor ICs The CML Family of Analogue Radio ICs CMX7031 Two-Way Radio Processor/4-Level FSK Modem/ C4FM Modem - with RF Support Two-Way Radio Processor/4-Level FSK Modem/ C4FM Modem Baseband Processor for PMR and Trunked Radios Baseband Processor, with GPS Data Transport for FRS, MURS, PMR446 and GMRS ‘Leisure’ Radios Function Image™ C-BUS Control Audio Processing FRS/PMR446/GMRS ‘Family Radio’ Processor CTCSS ‘Type 2’ Encoder/Decoder A versatile collection of audio, signalling and data ICs to cater to the needs of most analogue radio systems. Ranging from the simple CTCSS codec to the highly integrated multi-function FirmASIC ® based products, the CMX7031 and CMX7041, at least one of the products showcased in this document is suitable for your two-way radio design. Audio Tones System Clocks Two-Way Radio Processor ICs

Open the catalog to page 1

Analogue Radio ICs - Two way Radio Baseband Processor ICs-2

The CML Advantage High Integration Supports Multiple On-chip Functions CML in Analogue Radio Voice, Signalling and Data ICs for Two-Way Radio Equipment Baseband Audio, Signalling, Data and RF Functions Multiple Functions Reduce Final Component Count Integral C-BUS Instruction Set and On-chip Signal Manipulation Reduce Host µC Overhead C-BUS Serial Interface Compatible with Most Serial Port Systems The CMX7031: A versatile IC based on FirmASIC® technology offering either full-feature baseband (voice, signalling and data) processing, 4-level FSK freeformat/packet data or C4FM data, depending on...

Open the catalog to page 2

Analogue Radio ICs - Two way Radio Baseband Processor ICs-3

CMX7031 and CMX7041 Two-Way Radio Processors (Function Image™ 1.x) . . . the platform approach to saving cost, time and space in two-way radio designs Analogue Supply Digital Supply Boot Xtal or Clock Settings Input C-BUS Serial Interface Features CTCSS EEPROM Interface Boot Control Xtal Oscillator C-BUS Interface Programmable Tone Selectable Single/Two-Point Selcall Main Clock Digital PLL Power Control Two-Tone Paging Internal Systems Control SYSTEM CONTROL Baseband Signal Inputs Freeformat/Packet FFSK/MSK or Marine DSC FSK TRANSMIT FUNCTIONS FFSK/MSK Modulator Voice LPF and Soft Limiter Bandpass...

Open the catalog to page 3

Analogue Radio ICs - Two way Radio Baseband Processor ICs-4

CMX7031 and CMX7041 Data Processing Functions . . . flexible modems for data-over-radio operations Analogue Supply Digital Supply (Function Image™ 2.x) (Function Image™ 3.x) 4-Level FSK Baseband Modem C4FM Baseband Modem Boot Xtal or Clock Settings Input Features Built on FirmASIC® Technology Half-Duplex 4-Level FSK Modem (FI-2.x) C-BUS Serial Interface EEPROM Interface Boot Control Xtal Oscillator C-BUS Interface Registers Main Clock Digital PLL Power Control Selectable Single/Two-Point SYSTEM CONTROL Internal Systems Control Baseband Signal Inputs Tx DATA FUNCTIONS C4FM 4-Level Modulator Raised...

Open the catalog to page 4

Analogue Radio ICs - Two way Radio Baseband Processor ICs-5

Audio Processing (Function Image™ 1.x) CMX7031 and CMX7041 Audio Functions The audio signal can be processed in a multitude of ways, depending on the implementation/s required. When conﬁgured for operation, to minimise the operating power requirement, all unused functions can be disabled and powered-down. Voiceband Processing Operations Half duplex operation Programmable soft Tx voiceband limiter to reduce effects of over-modulation Flexible routing architecture permits concurrent signal processing Rx and Tx channel ﬁltering compliant with ETS-300-086 and TIA/EIA-603 speciﬁcations Selectable...

Open the catalog to page 5

Analogue Radio ICs - Two way Radio Baseband Processor ICs-6

Signalling (Function Image™ 1.x) In the case of both Rx and Tx signalling sections, when suitably conﬁgured by the relevant Function Image™, these products offer a complete and comprehensive suite of inband, sub-audio and combination signalling functions, all to run concurrently with voiceband audio operations. Inband Signalling These two ICs, when conﬁgured by FI-1.x, support Selcall, two-tone paging, DTMF and user-programmable inband tones in the range 288 to 3000 Hz. The CMX7031 and CMX7041 implement QTC coding; by default, on-power-up, the IC will load the EEA Selcall tone-set, but, to remain...

Open the catalog to page 6

Analogue Radio ICs - Two way Radio Baseband Processor ICs-7

Signal inputs from Tx audio processing circuits Transmit Functions Tx Modem Data Function Sub-Audio Signal Processing 51 tone CTCSS codec 0°/120°/180° CTCSS phase-shift generation (Tx) 0°/120°/180° CTCSS phase-shift detection (Rx) Tone Clone™ compatibility Programmable 23/24 bit DCS codec with ‘true’ and inverse modulation formats DCS end-of-transmission ‘off’ 134Hz tone-burst feature XTCSS sub-audio component encoding and decoding Two-Tone Paging CTCSS Tone Clone™ Tone Cloning™ is a process of automating the conﬁguration of Family Radio type radios, especially when using radios from different...

Open the catalog to page 7

Analogue Radio ICs - Two way Radio Baseband Processor ICs-8

Data Functions Selected signals to voice and signal stages Rx DATA FUNCTIONS FFSK/MSK/DSC Bandpass Filter Freeformat/Packet FFSK/MSK or Marine DSC FSK or NWR SAME Test Mode to Tx Mode Select Rx Eye Analogue Routing Demodulator Rx DATA FUNCTIONS 4-Level FSK AFSD Sinc Filter Test Mode to Tx Mode Select Selected signals to voice and signal stages Tx DATA FUNCTIONS FFSK/MSK, DSC FFSK/MSK Modulator To Tx Mod Mode Select circuits Freeformat/Packet FFSK/MSK or Marine DSC FSK Wireless Data Modes FFSK/MSK and DSC Mod/Demod Function Image™ 1.x and SAME AFSK Demod To Tx Mod Mode Select circuits 4-Level...

Open the catalog to page 8

Analogue Radio ICs - Two way Radio Baseband Processor ICs-9

The CMX7031 and the CMX7041 ICs, operating under the currently available Function Image™ standards FI-1.x, FI-2.x and FI-3.x, each offer an on-chip wireless data function. FFSK/MSK Data Processing (FI-1.x) Freeformat and packet capabilities 16-bit frame sync detector, error correction, data scrambling/descrambling and interleaving Frame head decoding 1200/2400 bps FFSK/MSK data modem with autobauding On-chip clock recovery Flexible packet data facility suitable for: - Text messaging - Calling line ID - Caller location - Digital poll of remote systems - GPS information in NMEA 0183 format - Data...

Open the catalog to page 9

Analogue Radio ICs - Two way Radio Baseband Processor ICs-10

Signal Interfacing and Routing These products offer a very ﬂexible on-chip routing architecture with three selectable signal inputs, and where conﬁgured by a Function Image™, two separate, multiplexed signal processing paths. The output interface offers a selection of two modulator drive outputs selectable to single, two-point and I and Q modulation schemes. A single audio (Rx or Tx voice or tone output) channel is selectable. To reduce transients when switching to the Tx mode, the MOD output signals can be programmed to ‘ramp-up’ and ‘ramp-down’ at a pre-programmed rate. Input Stages Input Stages...

Open the catalog to page 10