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MSM7502 Datasheet Multi-Function PCM CODEC

Manufacturer: OKI Electric

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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.

Overview

E2U0023-28-81 ¡ Semiconductor MSM7502 ¡ Semiconductor Multi-Function PCM CODEC This version: Aug.

1998 MSM7502 Previous version: Nov.

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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