CMX838
CMX838 is FRS/PMR446/GMRS Family Radio Processor manufactured by CML.
Features and Applications
- Advanced one-of-any CTCSS subaudio 50 tone processor
- Fast decode time
- IRQ on any / all valid tones
- Fast scan, group calling, auto response tone select and Tone Cloning™ support
- Supply Independent output level
- RF Synthesizer
- FRS, PMR446 and GMRS RF channels
- Configurable charge pump
- Audio call tone generator
Provisional Issue
- Audio processing
- Mic amplifier
- Pre/De-emphasis
- Limiter with Supply Independent output level
- Post limiter filtering
- Mic, Rx, and Tx digital gain controls
- Single and Dual Tx outputs
- Signal source and external function switches
- Low power, 3V to 5V supply
- Powersave and sleep modes
- Serial control interface
AUX I/O MICOUT
MICIN RXIN
AUDIO PROCESSOR
GENERAL PURPOSE TIMER AND TONE GENERATOR
PROGRAMMABLE SUBAUDIO PROCESSOR
TIMING GENERATION
REFIN -RFIN +RFIN
ISET CPOUT
SVDD SVSS
RF SYNTHESIZER
RXOUT
MODULATION OUTPUT SELECT AND LEVEL CONTROL
C-BUS
XTAL
TXMOD1
TXMOD2
IRQ RPLY DATA CMD DATA SERIAL CLOCK...