Product description

The CMX7131 and CMX7141 are half-duplex processor IC platforms built on FirmASIC® technology that are suitable for use in multi-standard digital PMR (DPMR) and dual-mode (analogue/digital) systems.

FirmASIC® component technology allows on-chip sub-systems to be reconfigured by a Function Image™ (FI): this is a data file that is uploaded during device initialisation that defines the device’s function and feature set.

Dual mode and multi-mode digital PMR radios can now be developed based on a single radio platform conforming to a number of  digital PMR systems/standards all with full analogue PMR backward compatibility.

The Ultimate FDMA Digital Radio Chipset

A number of the Function Images now support direct connection to CML’s CMX994 Direct Conversion Receiver.  The combination of the CMX7131/7141 and CMX994 enables the highest integration, multi-standard FDMA digital/analogue PMR radio, to be realised.  The CMX7131/7141 and CMX994 together address the market requirements for: Low power operation, small size, low cost, flexibility and high performance.

Seven Function Images are available, these can be downloaded from the CML Technical Portal (contact for access):

  • CMX7131/7141 FI-1.x – dPMR Baseband Data Processor with Auxiliary System Clocks, ADCs and DACs
  • CMX7131/7141 FI-2.x – ARIB STD-T98 DCR Baseband Processor with Auxiliary System Clocks, ADCs and DACs
  • CMX7131/7141 FI-3.x – NXDN™ 4-FSK Baseband Data Processor with Auxiliary System Clocks, ADCs and DACs
  • CMx7131/7141 FI-5.x – dPMR446 (mode 1/2) and Analogue PMR Baseband Processor with Auxiliary System Clocks, ADCs and DACs
  • CMX7131/7141 FI-6.x ARIB STD-T102 Baseband Data Processor with Auxiliary System Clocks, ADCs and DACs
  • CMX7131/7141 FI-7.x – dPMR® (mode 1/2/3) Baseband Data Processor (TS 102 658) with Auxiliary System Clocks, ADCs and DACs
  • CMX7131/7141 FI-8.x – Analogue PMR Baseband Processor with I/Q Downconversion Interface Interface, Auxiliary System Clocks, ADCs and DACs

Read More

Devices are available through our distributors below:

SalesNetworkLogo_2

Block diagram

CMX7131/7141

Features

  • Multi-standard Digital PMR Processor Including Analogue PMR Operations
  • Automatic Frame Sync Insertion and Detection (AFSD)
  • Two Auxiliary ADCs
  • Four Auxiliary DACs
  • Three Analogue Inputs with Programmable Gain
  • Auxiliary C-BUS Interface to CMX608 or CMX618
  • Tx Outputs for Two-Point or I/Q Modulation
  • Soft Decision Decoding Option
  • Two RF Synthesisers (CMX7131 Only)
  • Vocoder Connectivity, Management, Control and Data Transport
  • RALCWI/TWELP and Third-party Vocoders

Applications

  • Digital PMR Systems
  • dPMR
  • dPMR446
  • dPMR Mode 1/2/3
  • ARIB STD-T98 DCR
  • ARIB STD-T102
  • NXDN
  • Analogue PMR
  • Dual/Multi-mode Radios

Power supply requirement

  • 3.0 to 3.6 V

Not quite sure what you’re looking for?
We can tailor an existing product to your unique requirements

Design resources

CMX7131/7141 FAQ

 Function Image Loading Options
Q. I am about to start a design using one of your FirmASIC® based products, what is the most suitable method of storing the associated Function Image™ in my project?

A. Our FirmASIC® based devices require a Function Image™ to configure their on-chip sub-systems.
This is a data file that is uploaded during device initialisation and defines the device’s function and feature set.

The Function Image™ can be loaded automatically from external serial EEPROM via a dedicated SPI bus or from a host µController over the built-in C-BUS serial interface.It is also possible with two specified memory devices to update the serial memory stored Function Image™ via the C-BUS and SPI interface.

CML supplies a dedicated Thick Stub Function Image™ to enable this capability. The linked flow diagram is an aide-memoir in that it makes it plain what is possible when choosing the most suitable method of storing a Function Image™ for your project.

CMX7131/CMX7141 with the AMBE-3000

Interfacing and implementing the AMBE-3000 Vocoder with the CMX7131/7141 devices for use in digital radio systems.

CMX7131/41 - Interfacing CMX7131/CMX7141 with AMBE-3000™

Two scripts (transmit and receive) to enable interfacing and implementing the DVSI AMBE-3000™ with the CMX7131/CMX7141.

CMX7031/41 - CMXsynth1 450M

Synthesiser set-up example. Target board is the PE0201.

PE0402 for 6.144MHz Operation

Changes the PE0402 programming block to allow operation at 6.144MHz Note that some Function Images cannot operate at 6.144MHz

CMX7131/CMX7141 Evaluation and Demonstration Kits

PE0003 PE0003 The PE0003 Evaluation Kit Interface Card is a global interface system for use with evaluation kits for CML’s new generation ICs, including FirmASIC™ based products. This greatly simplifies the approach to the evaluation and design-in process. PE0003_Product_Preview
PE0402 PE0402 The PE0402 Platform Evaluation Kit is designed to assist in the evaluation and application development of the CMX704x/CMX714x range of FirmASIC products. PE0402_Product_Preview

PE0402 User Manual

PE0402 Schematic

DE6181 DE6181 The DE6181 is designed to assist in the evaluation of this family of products, when loaded with a Function Image™ (FI) and the CMX618 IC. DE6181_Product_Preview

DE6181 User Manual

DE6181 Support Package

 

DE9944 DE9944 The DE9944 is a compact demonstration/evaluation platform for FDMA Analogue / Digital Radio designs based on the CMX7141 FDMA PMR Processor and incorporating the CMX618 RALCWI Vocoder, the CMX7262 TWELP Professional Radio Vocoder, and the CMX994 Direct Conversion Receiver. DE9944_Product_Preview

DE994 User Manual

 

 

C-BUS Guides

Guides to operation and interfacing

CMX7131/41 Support Document

CMX7131_41SupportDocument

CMX7131/41 White Paper

CMX7131/41 White Paper

Variable Split-Band Scrambling

How it works

PE0402 Board Schematics

PE0402BoardSchematics

DE9944 Support Package

A zip archive containing the BOM version B04.

DE9944 Board Schematics

DE9944 Board Schematics. Version B04.

DE9944 Source

A zip archive containing the DE9944 source code and hex image. Version 2.0.

DE9944 Evaluation in Win OS

A GUI for Windows giving control of the CMX7341 and CMX994A in the DE9944. The GUI gives direct register access or runs a simple scripting language. Please see the PE0003 User Manual for driver installation instructions. The USB driver in this package is signed and so may not be compatible with older Windows computers. Version 1.2. For Windows XP use the unsigned driver version below.

DE9944 Evaluation in Win XP

A GUI for Windows XP giving control of the CMX7341 and CMX994A in the DE9944. The GUI gives direct register access or runs a simple scripting language. This USB driver in this package is for Windows XP only and uses an unsigned driver. Version 1.1. For later versions of Windows use the GUI above.

Ask a question

Request a quote