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MSM7557 - Single Chip MSK Modem with Compandor for Cordless Telephone

Description

The MSM7557 is a single chip MSK modem with base band voice processor for cordless telephone.

The MSM7557 voice transmit block consists of high pass filter, compressor, pre-emphasis, limiter and splatter filter.

Voice receive block consists of Band pass filter, De-emphasis and Expander.

Features

  • Available to transmit modem signal and also transmit base band voice signal through wireless transmission path (0.3 kHz to 3.4 kHz).
  • Built-in compandor circuit.
  • Upper limit of voice band (3306 Hz/3400 Hz/3500 Hz) is selectable.
  • Modem bit rate (2400/1200 bps) is selectable.
  • Transmit function and receive function operate separately.
  • Emphasis mode selectable.
  • Built-in bit synchronous detector and frame synchronous detector.
  • Bu.

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Datasheet Details

Part number MSM7557
Manufacturer OKI Electric
File Size 153.03 KB
Description Single Chip MSK Modem with Compandor for Cordless Telephone
Datasheet download datasheet MSM7557 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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E2A0046-16-X1 ¡ Semiconductor ¡ Semiconductor MSM7557 This version: Jan. 1998 MSM7557 Previous version: Nov. 1996 Single Chip MSK Modem with Compandor for Cordless Telephone GENERAL DESCRIPTION The MSM7557 is a single chip MSK modem with base band voice processor for cordless telephone. The MSM7557 voice transmit block consists of high pass filter, compressor, pre-emphasis, limiter and splatter filter. Voice receive block consists of Band pass filter, De-emphasis and Expander. FEATURES • Available to transmit modem signal and also transmit base band voice signal through wireless transmission path (0.3 kHz to 3.
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