Narrowband Wireless Data Products offering: FFSK/MSK, GMSK, GFSK, pi/4DQPSK and 4-Level FSK schemes

CML Microcircuits designs, manufactures and supports communications ICs for communications applications
worldwide

CMX7143 Multi-mode Data Modem

CMX7163 QAM Modem

FX/MX929B 4-Level FSK RD-LAP Packet Data Modem

CMX981 Advanced Digital Radio Baseband Processor

CMX998 Cartesian Feedback Loop Transmitter

CMX990 GMSK Packet-Modem and Tx/Rx

FX/MX919B 4-Level FSK Packet Data Modem

CMX909B GMSK Packet Data Modem

CMX469A 1200/2400/4800 Baud FFSK Modem

CMX589A GMSK Modem

CMX969 RD-LAP, MDC4800, Motient/Ardis Packet Data Modem

Wireless Data Products

CML's wireless data products address a wide range of communications and control applications, offering operation to custom, freeformat and packet data systems.

Markets currently served include:

PMR/LMR
Trunked and Leisure Radio
Radio-paging
Telemetry
Machine-to-Machine control and monitoring

Most common data-transfer protocols are catered for at a range of speeds from 1.2kbps to 200kbps, utilising: FSK, FFSK, GMSK, p/4DQPSK and 4 level FSK schemes.

The advent of CML's FirmASIC^® technology has enabled the design of the CMX7143 Multi-Mode Wireless Data Modem offering configurable GMSK/GFSK, 4-level FSK or FFSK/MSK schemes by the loading of a single FirmASIC^® Function Image™ file.

< < < < < Please use the links on the left to view the relevant product overviews

Product Comparisons
Product	Data Scheme	RF	Auxiliary	Supply
CMX7163 QAM Modem FI-4.x	4-Level FSK 4/16/64 QAM		ADCs and DACs System Clocks	3.0 to 3.6 V
CMX7143 Multimode Data Modem FI-1.x	GMSK/GFSK Packet/Freeformat
CMX7143 Multimode Data Modem FI-2.x	4-Level FSK Packet/Freeformat
CMX7143 Multimode Data Modem FI-3.x	FFSK/MSK
CMX990 GMSK Packet Modem	GMSK: 4k to 16k b/s BT: 0.3 or 0.5	IF, RF and Synth		3.0 to 3.6 V
CMX989 CDPD Modem	GMSK: 19.2k b/s BT: 0.5			2.7 to 5.5 V
CMX969 4-Level FSK Modem	4-Level FSK 9.6k to 19.2k b/s			2.7 to 5.5 V
FX/MX929B 4-Level FSK Modem	4-Level FSK 4.8k to 19.2k b/s			3.0 to 5.5 V
FX/MX919B 4-Level FSK Modem	4-Level FSK 4.8k to 19.2k b/s			3.0 to 5.5 V
CMX909B GMSK Modem	GMSK up tro 38.4kb/s			2.7 to 5.5 V
CMX589A GMSK Modem	GMSK: 4k to 200k b/s BT: 0.3 or 0.5			3.0 to 5.5 V
CMX469A FFSK Modem	1200, 2400 and 4800 Baud Modem			2.7 to 5.5 V
CMX981 Advanced Digital-Radio Baseband Processor	pi/4 DQPSK, 4-Level FSK, GMSK and C4FM		ADCs and DACs	2.25 to 2.75 V
CMX998 Cartesian Feed-back Loop Transmitter	CFBL Tx 100MHz to 1GHz			3.0 to 3.6 V

Evaluation Example
The PE0402 Platform Evaluation Kit is designed to assist in the evaluation and application development of the CMX704x/CMX714x range of FirmASIC^® products.

The board also incorporates all of the necessary power-supply regulation circuitry for operation from a single 5-volt supply. The board is fitted with a C-BUS connector allowing the PE0402 to be operated by connection to either of the two C-BUS ports on a CML PE0002 Interface Card, and to be used with the associated PC GUI software, or by direct connection between the CMX7040 C-BUS and the user's IC development application or emulation system.

The CMX704x Function Image™ (FI) can be loaded, on power-up, directly into the on-board target IC using the PE0002 interface or the user's own system.
Alternatively, it can be automatically loaded from the on-board serial memory on power-up. In this case, the on-board serial memory has to be preloaded with the FI by using a suitable third party programmer or by using the 'Program Serial Memory' tab on the PE0002 GUI software.

The PE0402 is a back-compatible replacement for the PE0401, with the following enhancements:

Pad-ring gives easy access to all CMX704x/CMX714x pins
Group functions on individual headers
Selectable clock sources:
- On-board 19.2MHz oscillator module
- 6.144MHz Xtal
- External clock (SMA) injection point
Multiple 'probe attach' points
AC by-pass facility on signal inputs
Optional power source from PE0002

The PE0402: an Evaluation Kit designed to assist in the evaluation and application development of the CMX704x/CMX714x

Glossary

FFSK	Fast Frequency Shift Keying: also known as Minimum Shift Keying (MSK) - A form of frequency modulation.
FSK	Frequency Shift Keying: a form of frequency modulation used to transmit two states of a signal each as separate frequencies. FSK is characterised by a frequency spacing of 1.
GFSK	Gaussian Filtered Frequency Shift Keying: an FSK modulation scheme with a Gausian filtered output signal.
GMSK	Gaussian Minimum Shift Keying: a type of FSK that uses pre-modulation Gaussian filtering to achieve high data rates in an FM communications channel bandwidth.
DQPSK	Differential Quadrature Phase Shift Keying: a modulation technique in which the carrier can assume one of four phases, each change of phase, or symbol, representing 2bits. The bit combinations being 00, 01, 11 and 10. Consequently the data stream can carry 2 bits (symbols) at a time.
Gaussian Filter	A filter having the symmetrical bell shape of a (normal distribution) Gaussian curve.
LMR	Land Mobile Radio system. Also known as Public Mobile Radio (PMR) and/or Public Land Mobile Radio (PLMR).
PMR	Public Mobile Radio system: Also known as Land Mobile Radio (LMR) and/or Public Land Mobile Radio (PLMR).
QAM	Quadrature Amplitude Modulation: A hybrid amplitude/phase modulation technique that allows the transmission of four bits of information during a signalling interval, and requires less bandwidth than normal amplitude or phase modulation techniques.
MSK	Minimum Shift Keying: Continuous phase FSK modulation (also known as FFSK) used to transmit two states of a signal as two separate frequencies using coherent detection and a frequency spacing of 0.5.