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):
Devices are available through our distributors below:
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.
Interfacing and implementing the AMBE-3000 Vocoder with the CMX7131/7141 devices for use in digital radio systems.
Two scripts (transmit and receive) to enable interfacing and implementing the DVSI AMBE-3000™ with the CMX7131/CMX7141.
Synthesiser set-up example. Target board is the PE0201.
Changes the PE0402 programming block to allow operation at 6.144MHz Note that some Function Images cannot operate at 6.144MHz
|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||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|
|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|
|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|
Guides to operation and interfacing
CMX7131/41 White Paper
How it works
A zip archive containing the BOM version B04.
DE9944 Board Schematics. Version B04.
A zip archive containing the DE9944 source code and hex image. Version 2.0.
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.
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.