PMR/LMR Common Platform Processors CMX7241 and CMX7341
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Product Preview PMR/LMR Common Platform Processors Supporting Digital/Analogue FDMA and Digital 2-slot TDMA PMR/LMR Systems Brief Description The Two-way Radio market (TWR), commonly referred to as business critical radio, Professional/Private Mobile Radio (PMR) or Land Mobile Radio (LMR), has become fragmented in its migration to digital. The CMX7241/CMX7341 provides a common platform to support digital and analogue FDMA and 2-slot TDMA PMR/LMR. A number of digital FDMA and TDMA PMR/LMR systems have emerged along with the ongoing requirement for a radio platform to support legacy analogue. With each system potentially having different requirements and specification down to radio architecture level, the radio manufacturer’s goal of a single, cost effective radio platform to fit all has become complex. The CMX7241/CMX7341 PMR Common Platform Processor addresses this challenge. The CMX7241/CMX7341 provides a common platform that can deliver FDMA digital, TDMA digital and legacy analogue PMR/LMR with direct connection to an I/Q based RF receiver. The chip-set comprising CMX7341 (PMR Common Platform Processor) + CMX994A/E (Direct Conversion Receiver) enables the highest integration and cost-effective radio platform to be realised. Based on CML’s proprietary FirmASIC® component technology, a Function Image™ (FI) upload determines the CMX7241/CMX7341 overall function and operating characteristics. The CMX7241 and CMX7341 provide the same system functionality and can accept the same FI but are targeted at different system implementations:  CMX7241 is pin compatible with the CMX7141 enabling a smooth forward evolution with power saving features and enhancements.  CMX7341 has a differential I/Q Rx interface for optimum performance and direct connection to I/Q based RF circuits such as CML’s CMX994A low power Direct Conversion Receiver IC. dPMR and Analogue PMR - Function Image™ 7241/7341FI-1.x This is intended for use in half duplex digital PMR/LMR equipment using 4FSK modulation at 4.8kbps suitable for 6.25kHz channels and analogue FM using 12.5/25kHz channels.  Combined dPMR™ mode 1/2/3 Air Interface and analogue PMR/LMR operation  dPMR™ - ETSI TS 102 490, TS 102 658 compliant  Air interface physical layer 1 and data link layer 2  Rx I/Q support (CMX7341 includes differential inputs)  Automatic digital/analogue call detection  Analogue PMR/LMR - EN 300 08, EN 300 296 and TIA-603-D compliant DMR (Digital Mobile Radio) - Function Image™ 7241/7341FI-2.x The 7241/7341FI-2.x Function Image™ implements the DMR Air Interface Protocol for digital terminal equipment using 4FSK modulation at 4.8k symbols/s in a 12.5kHz RF channels.  DMR - ETSI TS 102 361 compliant  DMR air interface physical layer 1 and data link layer 2  A flexible power control facility to optimise power consumption  Rx I/Q and LD is supported (CMX7341 includes differential inputs)  Direct connection to CMX994A Direct Conversion Receiver with automatic setup and management of the RF section 48-Pin VQFN  Codec support for AMBE+2 Vocoder Function Image™ Air Interface Roadmap  NXDN™ , ARIB STD-T102, ARIB STD-T98, PDT ... 48-Pin LQFP C-BUS SSP Tx en (Master) (Master) Rx en Mic in RAM DAC Multi-mode PMR/LMR Radio dPMR - FDMA digital PMR DMR - 2-slot TDMA PMR Analogue PMR/LMR CMX994A Direct Conversion Receiver PA CMX7341 PMR Common Platform Processor Loop Filter C-BUS (Slave) System Block Diagram

CMX7241/CMX7341 PMR Common Platform Processors Product Preview dPMR and Analogue PMR Processing Function Image™ 7241/7341FI-1.x Function Image™ 7241/7341FI-1.x embeds the dPMR™ ETSI TS 102 490 and TS 102 658 standard Air Interface protocol and provides full audio/voice processing to suit the requirements of EN 300 086, EN 300 296, TIA-603-D and includes a comprehensive signalling suite. Automatic Digital and Analogue detection is included and the following digital operating modes: Mode 1 - Peer-to-peer direct communication using a single frequency channel Mode 2 - Centralised repeater...

CMX7241/CMX7341 PMR Common Platform Processors Product Preview DMR Processor Function Image™ 7241/7341FI-2.x The 7241/7341FI-2.x.x.x Function Image™ (FI) implements a half-duplex 4FSK modem and a large proportion of the DMR Air Interface physical layer and data link layer. In conjunction with a suitable host and an RF transceiver function, a compact, lowcost, low-power digital PMR radio conforming to ETSI’s DMR standard TS 102 361-1 can be realised. Comprehensive DMR operation is supported for the following Tiers: Tier 1 - Unlicensed peer-to-peer direct communication network (without...

CMX7241/CMX7341 PMR Common Platform Processors Product Preview Block Diagram The simplified diagram below shows the basic function blocks within the CMX7241 and CMX7341. Analogue Interface DISCFB Differential I Input DISCPOS DISCNEG Output Routing CMX7341 only MICOP ALTFB Differential Q Input DISCFB DISC or I Input from CMX994 ALTFB ALT or Q Input from CMX994 Core Operations VBIAS Function Image™ Repository Function Image™ Support Operations System Control C-BUS Interface System Clocks Internal Signal EPSI EPSCLK EPCSN Averaging Registers Auxiliary SPI / C-BUS port Tone Generator Crystal...

CMX7241/CMX7341 PMR Common Platform Processors Product Preview Electrical Specification Summary Min Supply Voltage DVDD – DVSS Operating Temperature AVDD – AVSS XTAL/CLK (External Clock) 7241/7341FI-1.x dPMR™ + Analogue All Powersaved DIDD Package options CMX7241Q3/CMX7341Q3 48-pin VQFN Mechanical Outline (Q3) CMX7241L4 48-pin LQFP Mechanical Outline (L4) CML’s proprietary FirmASIC® component technology reduces cost, time to market and development risk, with increased flexibility for the designer and end application. FirmASIC® combines Analogue, Digital, Firmware and Memory technologies in...