CMX7141 Digital PMR Processor (dPMR)

Description
The CMX7141 FI-1.0 is a half-duplex 4-Level FSK modem suitable for use in dPMR radio designs. In conjunction with a suitable host controller and RF circuits, this provides the digital baseband processing to implement a radio to satisfy the requirements of ETS 102 490 and EN 301 166 or EN 300 113.

When used with the CMX618 or CMX608 Vocoder, these devices provide a highly integrated baseband solution for dPMR radio designs.
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.

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.

Analogue Two-way Radio Processing
The CMX7141 can be configured to operate as an Analogue Two-way Radio Processor using the CMX7031/CMX7041 Function Image^TM 3.x. See the CMX7141 "My CML" Portal area for more information.

Resources: datasheet \| datasheet + user manual \| block diagram \| DemoKit \| vocoder ICs \| support documents \| faqs \|

Features dPMR (ETSI TS 102 490) Compliant Air Interface Physical Layer (Layer 1) Air Interface Data Link Layer (Layer 2) 4-Level FSK Modem Half-duplex Operation 4.8 and 9.6 kbps Option Raw and dPMR Formatted Data Modes Automatic Frame Sync Insertion and Detection (AFSD) 2 x Auxiliary ADCs and 4 x Auxiliary DACs 3 x 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 Analogue Two-way Radio Processing Available - using CMX7041 Analogue Function Image^TM	Vocoder Connectivity Vocoder Management and Control Vocoder Data Transport Applications Digital PMR Systems . . . including dPMR Package Styles: - CMX7141L4 - 48-pin LQFP - CMX7141Q3 - 48-(no-leads) VQFN Supply Requirement: 3.0 to 3.6 Volts

Description The CMX7141 FI-1.0 is a half-duplex 4-Level FSK modem suitable for use in dPMR radio designs. In conjunction with a suitable host controller and RF circuits, this provides the digital baseband processing to implement a radio to satisfy the requirements of ETS 102 490 and EN 301 166 or EN 300 113. When used with the CMX618 or CMX608 Vocoder, these devices provide a highly integrated baseband solution for dPMR radio designs. 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. 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. Analogue Two-way Radio Processing The CMX7141 can be configured to operate as an Analogue Two-way Radio Processor using the CMX7031/CMX7041 Function Image^TM 3.x. See the CMX7141 "My CML" Portal area for more information.

Support Document This document is available to further explain the advantages and implementation of this digital PMR/LMR platform processor IC. It is recommended that this is downloaded when investigating this product. [Download Support Document]

Block Diagram (click for image)

CMX7141

Digital PMR Processor . . . including dPMR