CML Microcircuits
COMMUNICA
TION SEMICONDUCTORS
CMX7131/CMX7141
Digital PMR Processor
NXDN™ Operation
Advance Information
D/7141_FI-3.x/6 April 2014
DATASHEET
7131/7141FI-3.x: NXDN 4-FSK Baseband Data Processor with Auxiliary System
Clocks, ADCs and DACs
Features
4-FSK Modem
4.8 kbps Data Rate
Soft-decision Data Output Option
AFSD (Automated Frame Sync Detection)
AMBE+2 Vocoder, e.g. AMBE-3000
Tx Sequencer reduces host timing
constraints
Two RF Synthesisers (CMX7131 only)
Four Auxiliary ADCs (4 Multiplexed Inputs)
Four Auxiliary DACs
Two Auxiliary System Clock Outputs
Flexible Powersave Modes
Available in LQFP or VQFN Packages
Low-power (3.0 to 3.6V) Operation
C-BUS Serial Interface to Host µController
Vocoder Connectivity
Tx Outputs for Two-point or I/Q Modulation
Rx Inputs for CMX994 Direct Conversion
Receiver
RF Transmit
VCO Modulator
3.0V to 3.6V
RF Receive
Discriminator
or
Direct Conversion
Receiver
CMX7131/CMX7141
Digital PMR Processor
Built on
FirmASIC
®
Technology
Vocoder
CMX994
AMBE+2 Vocoder
Rx and Tx Enable
7131/7141FI-3.x
RF Synthesisers (CMX7131 only)
System clocks
GPIO
Reference clock
Tx PA ramp
DAC outputs
ADC inputs
NXDN™
C-BUS
Host µC
2014 CML Microsystems Plc
CMLMICRO [ CML MICROCIRCUITS ]
