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CMX148 Datasheet Pmr Audio And Data Processor

Manufacturer: Consumer Microcircuits Limited

Overview: CMX148 PMR Audio and Data Processor D/148/7 July 2023 Audio Processing, DTMF and FFSK/MSK Data Modem with Auxiliary Functions for use in Analogue PMR.

General Description

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.

prehensive audio processing facilities include plete audio processing, filtering, panding, preor de-emphasis and frequency inversion scrambling.

Key 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 Data Modem with Packet or Freeformat Modes with FEC, CRC, Interleaving and Scrambling.
  • DTMF and Audio Tone Encoder/Decoder.
  • Routing to Support Host µController Signalling.

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CMX148 Distributor