CMX990
CML Microcircuits
COMMUNICATION SEMICONDUCTORS
D/990/1 April 2004
GMSK Packet Data Modem
and RF Transceiver
Advance Information
Features
•
Single Chip RF Transceiver and GMSK Modem
•
IF, RF, Control and Synthesizer Stages
•
Selectable B
t
= 0.3 or 0.5
•
Full Mobitex Compatibility
•
Packet and Freeformat (Raw) Data
•
Versatile Data Rates: 4kbps to 16kbps
•
Simple Parallel Interfacing
•
Low-Power, Low Profile, Low-Cost BOM
•
Flexible System Clocks
Applications
•
Narrowband Data Over Radio
•
Mobitex Data Terminals
•
400MHz to 1GHz Radio Data Systems
•
Radio Modems
•
Wireless Telemetry
•
SCADA Terminals
•
Suitable for EN 300 113 and FCC
CFR 47 Part 90 Applications
1.
Brief Description
A single-chip GMSK packet-data modem and RF transceiver, the CMX990 provides the majority of
circuits and functions, including host µC interfaces, to implement a full-feature ‘wireless modem’
subsystem. The CMX990 can operate in RF ranges of 400MHz to 1GHz at data rates of 4 to 16 kbps
and is fully Mobitex compatible.
©
2004 CML Microsystems Plc
CMLMICRO [ CML MICROCIRCUITS ]
