CMX7131/CMX7141 CML Microcircuits Digital PMR Processor COMMUNICATION SEMICONDUCTORS dPMR D/7131/7141FI-1.x/11 October 2013 DATASHEET Provisional Information 7131/7141FI-1.x: dPMR Baseband Data Processor with Auxiliary System Clocks, ADCs and DACs Features Digital PMR 2 Auxiliary ADCs (4 Multiplexed Inputs) dPMR (ETSI TS 102 490) Compliant 4 Auxiliary DACs Air Interface Physical Layer (Layer 1) 2 Auxiliary System Clock Outputs Air Interface Data Link Layer (Layer 2) Tx Outputs for Two Point or I/Q Modulation 2 Supports similar functionality to I S Mode Flexible Powersave Modes 4FSK Modem Available in Small LQFP or VQFN Packages 4.8 and 9.6 kbps Data Rates Low-power (3.3V) Operation Soft-decision Data Output Option C-BUS Serial Interface to Host Controller AFSD (Automated Frame Sync Detection) Two RF Synthesisers (CMX7131 only) Raw Data Mode Vocoder Connectivity o Vocoder Management and Control (RALCWI Vocoders CMX608 and CMX618) o Vocoder Data Transport (Third-party Vocoders e.g. AMBE3000) Modulator 3.3V Discriminator Rx enable Tx enable RALCWI RF Synthesiser 1 Vocoder RF CMX7131 RF Synthesiser 2 CMX608 CMX618 CMX7131 only CMX7141 GPIO Digital PMR System clock 1 Processor System clock 2 Third-Party Reference clock Built on FirmASIC Technology Vocoder Tx PA ramp DAC outputs ADC inputs Host C 2013 CML Microsystems Plc Digital PMR Radio Processor CMX7131/CMX7141 1 Brief Description The 7131/7141FI-1.x Function Image (FI) implements a half-duplex 4FSK modem and a large proportion of the dPMR Air Interface, Data Link and Call Control layers. In conjunction with a suitable host and a limiter/discriminator based RF transceiver, a compact, low cost, low power digital PMR radio conforming to ETSIs dPMR standard TS 102 490 can be realised. Dual mode, analogue/digital PMR operation can also be achieved with the CMX7131/CMX7141. Both ISF and CSF configurations are supported, including built-in support for BCD addressing modes. The embedded functionality of the CMX7131/CMX7141, managing voice and data systems autonomously including CMX6x8 Vocoder control (via the Auxiliary SPI/C-BUS interface), minimises host microcontroller interactions enabling the lowest operating power and therefore the longest battery life for a dPMR radio. The CMX7131/CMX7141 can also provide audio codec functionality for vocoders under direct host control. 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 device s function and feature set. The Function Image can be loaded automatically from an external serial memory or host Controller 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 1.x. 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). Additionally the CMX7131 features two on-chip RF synthesisers, with easy Rx/Tx frequency changeover. The CMX7141 is identical in functionality to the CMX7131 with the exception that the two on-chip RF Synthesisers have been deleted, which enables it to be supplied in a smaller package. This document refers to both parts, unless otherwise stated. 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 Function Image. 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 this product with your local CML representative. AMBE 3000 is a registered trademark of Digital Voice Systems Inc. 2013 CML Microsystems Plc Page 2 D/7131/7141FI-1.x/11