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 vi...

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