CMX7031/CMX7041 CML Microcircuits The Two-Way Radio COMMUNICATION SEMICONDUCTORS Processor D/7031/41 FI1.x/13 July 2013 DATASHEET Provisional Issue 7031/7041 FI-1.5: Baseband Audio and Data Processor with Auxiliary System Clocks, ADCs and DACs for use in Analogue Radio Systems Features Concurrent Audio/Signalling/Data Operations Selectable Audio Processing Order Full Audio-band Processing: MSK/FFSK Data Modem with Packet or Free- Pre and De-emphasis, Compandor, format Modes with FEC, CRC, Interleaving and Scrambler and Selectable 2.55/3.0 kHz Filters Scrambling Enhanced DSC Modem for Marine 2 x RF Synthesisers (CMX7031 only) Applications, offering support for DSC Inband Signalling: Selcall, DTMF, NOAA NWR expansion sequences and transmission of 3 x Analogue Inputs (Mic or Discriminator) continuous distress signals 2 x Auxiliary ADCs and 4 x Auxiliary DACs Sub-Audio Signalling: CTCSS, DCS, XTCSS C-BUS Serial Interface to Host Controller Tx Outputs for Single, Two-Point or I/Q Mod. Low-power (3.0V to 3.6V) Operation 559bps PSK Modulator 2 x Auxiliary System Clock Outputs Available in 64-pin, 48-pin LQFP and VQFN Packages Flexible Powersave Modes DAC outputs ADC inputs 3.0V to 3.6V Modulator Discriminator CMX7031 / CMX7041 RF The Two-Way Radio Processor C-BUS RF Synthesiser 1 Host Built on FirmASIC technology RF Synthesiser 2 C This document contains: CMX7031 only GPIO User Datasheet Manual System Clock 1 System Clock 2 Reference Clock 1. Brief Description The CMX7031/CMX7041 FI 1.5 is a full-function, half-duplex, audio, signalling and data processor IC. This makes it a suitable device for both the leisure radio markets (FRS, MURS, PMR446 and GMRS) and for professional radio products (PMR/LMR, Marine and Trunking) with or without signalling and data facilities. The device utilises CMLs 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 devices function and feature set. The Function Image can be loaded automatically from an external EEPROM or from a host Controller over the built-in C-BUS serial interface. The devices functions and features can be enhanced by subsequent Function Image releases, facilitating in-the-field upgrades. This document refers specifically to the features provided by Function Image 1.5. Cont inued 2013 CML Microsystems Plc The Two-Way Radio Processor CMX7031/CMX7041 The CMX7031 features two on-chip RF synthesisers, with easy Rx/Tx frequency changeover, and programmable system clocks to minimise chip count in the final application. 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 and with two extra GPIO pins. This document refers to both parts generically as the CMX7031, unless otherwise stated. When loaded with Function Image 1.5, both devices perform simultaneous processing of sub-audio and inband signalling and audio band processing (including frequency inversion scrambling, companding and pre- or de-emphasis). Other features include a complete MSK/FFSK modem for packetised or free-format data, a DSC modem, two auxiliary ADC channels with four selectable inputs and up to 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. Note that text shown in pale grey indicates features that will be supported in future versions of the device. This 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 these products with your local CML representative. 2013 CML Microsystems Plc Page 2 D/7031/41 FI1.x/13