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參數(shù)資料
| 型號(hào)： | MSM7580 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | ITU-T G.721 ADPCM TRANSCODER |
| 中文描述： | ITU - T的G.721差分PcM碼器 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大?。?/td> | 207K |
| 代理商： | MSM7580 |
1/17
Semiconductor
MSM7580
ITU-T G.721 ADPCM TRANSCODER
GENERAL DESCRIPTION
The MSM7580 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 consists of two systems with full-duplex voice data channels and a data-through
mode.
The MSM7580 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 Two Data channels
PCM companding Law: A-law/
μ
-law selectable
Synchronized Operation between coder and decoder, and between two channels.
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
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 :
+5 V
±
10%, 2.5 mA/channel
Package :
28-pin plastic SOP (SOP28-P-430-1.27-K) (Product name : MSM7580GS-K)
E2U0031-39-61
This version: Jun. 1999
Previous version: Aug. 1998
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MSM7581 | ITU-T G.721 4ch ADPCM TRANSCODER |
| MSM7582 | pie/4 Shift QPSK MODEM |
| MSM7582B | pie/4 Shift QPSK MODEM |
| MSM7583GS-BK | pie/4 Shift QPSK MODEM |
| MSM7583 | pie/4 Shift QPSK MODEM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MSM7580GS-K | 制造商:ROHM Semiconductor 功能描述: |
| MSM7581 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:ITU-T G.721 4ch ADPCM TRANSCODER |
| MSM7582 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:pie/4 Shift QPSK MODEM |
| MSM7582B | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:pie/4 Shift QPSK MODEM |
| MSM7583 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:pie/4 Shift QPSK MODEM |
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