CMX148 Datasheet (Consumer Microcircuits Limited)

CMX148, PMR Audio and Data Processor

The CMX148 is a half-duplex, audio, signalling and data processing IC for use in PMR systems that utilise the host µC to perform signalling, including CTCSS/DCS encoding/decoding.

The device is intended for use in general leisure and professional PMR terminals.

Comprehensive audio processing facilit

CMX148 Features

* Concurrent Audio/Signalling/Data Operations

* Complete Audio-band Processing: o Selectable Audio Processing Order o Pre and De-emphasis o Selectable 2.55/3.0 kHz Filtering o Selectable Audio HPF Cut-off o Compandor o Limiter

* Programmable Voice Scrambler

* MSK/FFSK