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CMX7031 and CMX7041

Description

CMX7031 and CMX7041: two-way radio processor platform ICs built on FirmASIC^® technology.
The specific function and feature-set of the IC platform is determined by the loading of a small data file, the Function Image™ (FI) file.
Function Image™ files are available from the Technical Portal area of this website.

Current Function Image™ files available for these products are:

Two-way Radio Processor:	7031/7041FI-1.x
4-Level FSK Data Pump:	7031/7041FI-2.x
C4FM Data Pump:	7031/7041FI-3.x

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The CMX7031 and CMX7041 two-way radio processors enable a revolutionary new platform approach to radio design.
They provide a comprehensive feature-set as standard plus a roadmap of function enhancements available through CML’s FirmASIC^® technology.

The CMX7031 and CMX7041 are full-function, half-duplex, audio, signalling and data processor ICs.
They are suitable for implementation in professional radio (PMR/LMR, Trunking), Leisure radio (GMRS, FRS, PMR446, and MURS) and Marine VHF, Aviation and Amateur radio products. These products provide concurrent sub-audio band and in-band signalling, complete audio processing and a comprehensive data modem implementation.

The FFSK/MSK data modem provides a freeformat synchronised data mode, utilising CRC, FEC, interleaving and scrambling.

The half-duplex 4-level FSK modem is suitable for use in PMR/LMR radios. In conjunction with a suitable host µcontroller and radio modules, this provides the digital baseband processing to implement a radio function to satisfy the requirements of ETS 102 490 and EN 301 166 or EN 300 113.

The half-duplex C4FM modem suitable for use in PMR/LMR radio designs in conjunction with a suitable host controller and RF circuits.

The CMX7031 features two on-chip RF synthesisers that can be used for efficient switching of the radio between Rx and Tx operating modes.
To enable full control of the radio functions and minimise the overall chip count, two user programmable system clock outputs and auxiliary ADC and DAC blocks are available.

A user-programmable PLL, driven from the Xtal/reference clock input, generates all internal clocks.
This supports a wide selection of Xtal/reference clock frequencies and allows one clock source to be internally reused for both baseband and RF synthesiser functions (for CMX7031 only).
A flexible power control facility allows the device to maximise powersaving whilst not processing signals or when specific functions are not enabled.

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Evaluation
The following PCB-based Evaluation Kits are available for use with these ICs:

• PE0002 : Evaluation Kit Interface Card
• PE0201 : Evaluation Kit for CMX703x and CMX713x Range of ICs
• PE0402 : Evaluation Kit for CMX704x and CMX714x ICs

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Features continued . . .

7031/7041FI-1.x Audio Band Processing Selectable Processing Order Pre/De-emphasis Companding Frequency Inversion Scrambling CTCSS and DCS Selcall and XTCSS FFSK/MSK Data 559bps PSK Modulator NWR Decoder WAT and SAME Demodulator	7031/7041FI-2.x 4-Level FSK Data Pump 4.8 and 9.6 kbps Raw and Synchronised Data Modes Automatic Frame Sync Detect Automatic Preamble and Frame Sync Insertion Soft Decision Decoding: for Use with Vocoders	7031/7041FI-3.x C4FM Data Pump 4.8 and 9.6 kbps Raw and Synchronised Data Modes Automatic Frame Sync Detect Automatic Preamble and Frame Sync Insertion Soft Decision Decoding: for Use with Vocoders
Common to all products . . Half-duplex Operation Two On-chip RF Synthesisers (CMX7031) Reference Clock PLLs Auxiliary ADCs and DACs Single and Two-point Mod Tx Outputs I and Q Mod Tx Outputs Three Analogue Inputs Flexible Powersave Modes

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Block Diagram

 

Download or read a larger versions of all three functions