CMX7241 Datasheet, PDF (1/94 Pages) CML Microcircuits – Voice processing

CML Microcircuits
COMMUNICATION SEMICONDUCTORS
CMX7241/CMX7341
PMR Common Platform
Processor
D7241_7341_FI-1.x/4 February 2015
DATASHEET
Advance Information
7241FI-1/7341FI-1.x: dPMR^TM and Analogue PMR Processor with Rx I/Q Support
Features
Auto detect of Digital and Analogue Receive
o Digital PMR Functions:
 dPMR^TM (ETSI TS 102 658) Compliant
 Air Interface Physical Layer (Layer 1)
 Air Interface Data Link Layer (Layer 2)
 Mode 1: peer-to-peer mode
 Mode 2: peer-to-peer mode with repeater
operation
 Mode 3: trunked mode support
 Status, Type 1, Type 2 and Packet Data
o Tx Sequencer
o Analogue PMR EN 300 086 / TIA 603D
 Voice processing
 De-emphasis / Pre-emphasis
 Tx Limiter and splatter filter
 Voice Scrambler
 Voice Compander
 CTCSS and DCS generation and detection
 Support for external CTCSS and DCS
 Selcall generation and detection
 DTMF generation and detection
 1200/2400 bps FFSK modem (MPT1327
compatible)
Additional Features
 2 Auxiliary ADCs (4 Multiplexed Inputs)
 4 Auxiliary DACs
 2 Auxiliary System Clock Outputs
 Tx Outputs for Two-point or I/Q Modulation
 Rx Inputs for Limiter/discriminator or CMX994
Direct Conversion (I/Q) Receiver
 C-BUS serial interface to CMX994 transceiver
o Vocoder Management and Control (CMX6x8
RALCWI Vocoder or CMX7262 TWELP Vocoder)
o Voice Codec supports external vocoders
(SPI/PCM/I²S compatible - e.g. AMBE+2)
o C-BUS Serial Interface to Host micro
o Flexible Powersave Modes
o Low-power (3.3V) Operation
o Dedicated hardware reset pin
o Single-ended inputs (CMX7241)
o Differential inputs (CMX7341)
o Available in LQFP or VQFN Packages (CMX7341
– VQFN only)
Applications
 Multi-mode PMR radio
 FDMA digital PMR
 Analogue PMR
RF Transmit
VCO Modulator
RF Receive
Discriminator
or
Direct Conversion
Receiver CMX994
Rx and Tx Enable
System clocks
GPIO
Reference clock
Tx PA ramp
DAC outputs
ADC inputs
3.0V to 3.6V
CMX7241/CMX7341
PMR Common
Platform Processor
Vocoder
CMX6x8 or
CMX7262
or
Third-Party Vocoder
C-BUS
Host µC
User
Datasheet
Manual
 2015 CML Microsystems Plc