MSM7581TS-K Oki Semiconductor, MSM7581TS-K Datasheet

MSM7581TS-K

Manufacturer Part Number

MSM7581TS-K

Description

Manufacturer

Oki Semiconductor

Datasheet

1.MSM7581.pdf (18 pages)

Specifications of MSM7581TS-K

Case

TQFP100

Date_code

09+

Current page: 1 of 18
Download datasheet (166Kb)

E2U0032-28-82

GENERAL DESCRIPTION

The MSM7581 is an ADPCM transcoder which is used by the new digital cordless system.

The MSM7581 provides cost effective solutions for digital cordless office telephone systems

which are incorporated into PABXs, and for the public base stations which are connected to the

Central Office through digital PSTNs.

FEATURES

• Conforms to ITU-T G.721

• Built-in Full-duplex Transcoder with Four Data Channels

• PCM companding Law: A-law/ -law selectable

• Serial PCM Data Transmission Speed: 64 kbps to 2048 kbps

• Serial ADPCM Data Transmission Speed: 32 kbps to 2048 kbps

• Hardware Reset – ITU-T G.721 Optional Reset – for each channel

• Power Down Control for each channel

• Decoder (ADPCM Æ PCM ) Mute Mode and PAD Mode for each channel

• ADPCM Data-through Mode

• Capable of time slot conversion

• Special ADPCM Input Data Code (”0000”) Detector for each channel

• Master Clock Signal : Not necessary

• Power supply voltage/Consumption current :

• Package :

¡ Semiconductor

MSM7581

ITU-T G.721 4ch ADPCM TRANSCODER

It converts 64 kbps voice PCM serial data to 32 kbps ITU-T G.721 ADPCM serial data, and vice

versa.

This device is consists of four systems with full-duplex voice data channels and a data-through

mode.

+2.7 V to +5.5 V, 2 mA/channel (max)

100-pin plastic TQFP (TQFP100-P-1414-0.50-K) (Product name : MSM7581TS-K)

Previous version: Nov. 1996

This version: Aug. 1998

MSM7581

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