CMX7031/CMX7041

The Two-Way Radio Processor
Quantity Price Guide: CMX7031 = $8.32 - CMX7041 = $7.39

C4FM Modem
Features
  • C4FM Modem
  • RF Synthesisers (CMX7031)
  • Automatic Frame Sync. Detection
  • Automatic Preamble and Frame Sync. Insertion
  • 2 x Auxiliary ADCs and 4 x Auxiliary DACs
  • 3 x Analogue Inputs (Mic. or Discriminator)
  • C-BUS Serial Interface to Host µController
  • 4.8 and 9.6 kbps Option
  • Raw Mode, Data Pump
  • Auxiliary System Clocks
  • Single and Two-Point Modulation or I and Q Modulation, Tx Outputs
  • Soft-Decision Decoding Option for use with a Vocoder
  • Flexible Powersave Modes
  • Function Upgrade Flexibility Built on FirmASIC® Technology
  • PE0201 and PE0001 Evaluation Kits Available
Applications
  • Professional PMR/LMR
  • Semiprofessional PMR/LMR
  • Trunked Radio
  • GMRS, FRS, PMR446, MURS
  • Aviation Comms
  • Amateur Radio

Package Styles:
CMX7031L9
CMX7031Q1
CMX7041L4
CMX7041Q3

Supply Requirement:
3.0V to 3.6V power supply
Description
The CMX7031 or CMX7041 configured via FI-3.0 is a half-duplex C4FM modem suitable for use in PMR/LMR radio designs in conjunction with a suitable host controller and RF circuits.

The CMX7041 is identical in functionality to the CMX7031 with the exception that the two on-chip RF Synthesisers have been deleted, which enables it to be supplied in a smaller package.

The device utilises CML's proprietary FirmASIC® component technology.
On-chip sub-systems are configured by a Function Image™: 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 an external EEPROM or host µController over the built-in C-BUS serial interface.
The device's functions and features may be enhanced by subsequent Function Image™ releases, facilitating in-the-field upgrades. This document refers specifically to the features provided by Function Image™ 3.0.
The same device can be loaded with FI-1.x to provide Analogue functionality including simultaneous processing of sub-audio and inband signalling and audio band processing (with frequency inversion scrambling, companding and pre- or de-emphasis).

Other features include two Auxiliary ADCs with four selectable inputs and four auxiliary DAC interfaces (with an optional RAMDAC on the first DAC output, to facilitate transmitter power ramping).
The device has flexible powersaving modes and is available in both LQFP and VQFN packages.
The Datasheet is the first part of a two-part document comprising Datasheet and User Manual: the User Manual can be obtained by registering your interest in this product with your local CML representative.

Further information, including the user manual, application notes, FAQs and evaluation resources, can by obtained from the 'MyCML' portal.

Evaluation and Demonstration
Two evaluation resources are currently available to the CMX7031 and the CMX7041. Information on both can by obtained from the 'MyCML' area of this website.
The PE0201 Platform Evaluation Kit is available for the evaluation and application development of the CMX703x range of FirmASIC® products.
The PE0401 Platform Evaluation Kit is available for the evaluation and application development of the CMX704x range of FirmASIC® products.
The PE0002 Interface Card is a global interface system for use with evaluation kits for CML's new generation ICs.