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CMX148 - PMR Audio and Data Processor

Datasheet Summary

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.

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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Datasheet preview – CMX148

Datasheet Details

Part number CMX148
Manufacturer Consumer Microcircuits Limited
File Size 1.88 MB
Description PMR Audio and Data Processor
Datasheet download datasheet CMX148 Datasheet
Additional preview pages of the CMX148 datasheet.

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Full PDF Text Transcription

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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 Systems 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.
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