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MSM7502 - Multi-Function PCM CODEC

General Description

The MSM7502, developed especially for low-power and multi-function applications in touchtone telephone sets and digital telephone terminals of digital PBXs, is a single +5 V power supply CODEC device.

Key Features

  • Single +5 V Power Supply.
  • Low Power Dissipation Power ON Mode : 30 mW Typ. 53 mW Max. Power Saving Mode : 2 mW Typ. 5 mW Max.
  • In compliance with ITU-T’s companding law.
  • Transmission clocks : 64, 128, 256, 512, 1024, 2048 kHz 96, 192, 384, 768, 1536, 1544 kHz.
  • Built-in PLL.
  • Built-in Reference Voltage Supply.
  • Calling Tone Interval : Controlled by processor.
  • Calling Tone Combination : Controlled by processor, 6 modes.

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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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E2U0023-28-81 ¡ Semiconductor MSM7502 ¡ Semiconductor Multi-Function PCM CODEC This version: Aug. 1998 MSM7502 Previous version: Nov. 1996 GENERAL DESCRIPTION The MSM7502, developed especially for low-power and multi-function applications in touchtone telephone sets and digital telephone terminals of digital PBXs, is a single +5 V power supply CODEC device. The device consists of the analog speech paths directly connectable to a handset, the calling circuit directly connectable to a piezosounder, the push-button key scanning interface between push buttons and control processors, the dial tone generator, the m-law/A-law CODEC, and the processor interface. The functions can be controlled via 8-bit data bus.