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E2U0032-28-82

隆 Semiconductor

MSM7581

隆 Semiconductor

ITU-T G.721 4ch ADPCM TRANSCODER

This version: Aug. 1998

MSM7581

Previous version: Nov. 1996

GENERAL DESCRIPTION

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

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.

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

鈥?Conforms to ITU-T G.721

鈥?Built-in Full-duplex Transcoder with Four Data Channels

鈥?PCM companding Law: A-law/碌-law selectable

鈥?Serial PCM Data Transmission Speed: 64 kbps to 2048 kbps

鈥?Serial ADPCM Data Transmission Speed: 32 kbps to 2048 kbps

鈥?Hardware Reset 鈥?ITU-T G.721 Optional Reset 鈥?for each channel

鈥?Power Down Control for each channel

鈥?Decoder (ADPCM

脝

PCM ) Mute Mode and PAD Mode for each channel

鈥?ADPCM Data-through Mode

鈥?Capable of time slot conversion

鈥?Special ADPCM Input Data Code (鈥?000鈥? Detector for each channel

鈥?Master Clock Signal : Not necessary

鈥?Power supply voltage/Consumption current :

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

鈥?Package :

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

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MSM7581相關(guān)型號(hào)PDF文件下載

• 型號(hào)
  版本
  描述
  廠商
  下載
• MSM7502
  英文版
  Multi-Function PCM CODEC
  OKI
  MSM7502
• MSM7503
  英文版
  Multi-Function PCM CODEC
  OKI
  MSM7503
• MSM7508
  英文版
  OKI electronic componets [Single Rail CODEC]
  OKI
  MSM7508
• MSM7510
  英文版
  300 bps Full Duplex FSK Modem – ITU-T V.21
  OKI
  MSM7510
• MSM7512
  英文版
  OKI electronic componets [1200 bps Half Duplex FSK Modem - ...
  OKI
  MSM7512
• MSM7524
  英文版
  OKI electronic componets [DTMF Transceiver]
  OKI
  MSM7524
• MSM7532
  英文版
  Single Chip MSK Modem with Compandor for Cordless Telephone
  OKI
  MSM7532
• MSM7534
  英文版
  2ch Single Rail CODEC
  OKI
  MSM7534
• MSM7540
  英文版
  Single Rail ADPCM CODEC
  OKI
  MSM7540
• MSM7541
  英文版
  Single Rail CODEC
  OKI
  MSM7541
• MSM7542
  英文版
  Single Rail CODEC
  OKI
  MSM7542
• MSM7543
  英文版
  Single Rail CODEC
  OKI
  MSM7543
• MSM7544
  英文版
  Single Rail CODEC
  OKI
  MSM7544
• MSM7545
  英文版
  OKI electronic componets [LSI]
  OKI
  MSM7545
• MSM7547
  英文版
  Voice Signal Level Control LSI
  OKI
  MSM7547
• MSM7557
  英文版
  Single Chip MSK Modem with Compandor for Cordless Telephone
  OKI
  MSM7557
• MSM7560
  英文版
  Single Rail ADPCM CODEC
  OKI
  MSM7560
• MSM7566
  英文版
  Single Rail CODEC
  OKI
  MSM7566
• MSM7567
  英文版
  Single Rail CODEC
  OKI
  MSM7567
• MSM7570
  英文版
  5V Sinlge-Rail ADPCM CODECs
  OKI
  MSM7570

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