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參數(shù)資料
| 型號(hào)： | MSM6981-01 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | 32 kbps ADPCM Transcoder(32kbps ADPCM代碼轉(zhuǎn)換器) |
| 中文描述： | 32 kbps的差分PcM碼型變換器（32kbps的差分PcM代碼轉(zhuǎn)換器） |
| 文件頁(yè)數(shù)： | 1/15頁(yè) |
| 文件大?。?/td> | 107K |
| 代理商： | MSM6981-01 |
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Semiconductor
MSM6981-01
32 kbps ADPCM TRANSCODER
GENERAL DESCRIPTION
The MSM6981-01 is for performing high-efficiency compression to code an A/D converted
audio-band PCM signal into an ADPCM signal with a transmission rate of 32 kbps, or conversely
for converting an ADPCM signal to a PCM signal.
With digital-digital conversion in particular, if this device is used as a PCM-ADPCM mutual
converter (transcoder) between existing PCMs and CODECs, efficiency can be doubled with
respect to conventional transmission lines without loss of call quality.
This device may be used in high-speed digital dedicated line multiplexors, digital circuit
multiplexors and digital PBX's, or in audio band signal coders/decoders for this kind of
equipment.
The MSM6981-01 cannot transfer data to and from the MSM6980-03 (MSM6980 family).
FEATURES
Provides 9600 bps modem signal (conformed with ITU-T V.29) transmission capability
High quality transmission characteristics equal to or better than ITU-T G.721 (ADPCM
specification) for voice signals and tone signals
Provides 24 kbps ADPCM transmission capability for voice signals
Can be interfaced with
m
-law or A-law PCM CODECs
Can operate as ADPCM encoder or decoder (selection of operation mode)
Asynchronous data input and output
Serial or parallel data interface
Usable clock rate of 32 kbps to 2048 kbps for serial input or output
Selectable 3 bit or 4 bit data conversion
Low power consumption: +5 V, 70 mW (Typ.)
Package:
42-pin plastic DIP
(DIP42-P-600-2.54) (Product name : MSM6981-01RS)
E2U0033-16-X0
This version: Jan. 1998
Previous version: Nov. 1996
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MSM6996 | Single Chip CODEC |
| MSM7503 | Multi-Function PCM CODEC(多功能PCM(自適應(yīng)差分脈沖編碼調(diào)制）編解碼器) |
| MSM7507-01 | Single Rail CODEC |
| MSM7507-02 | Single Rail CODEC |
| MSM7507-03 | Single Rail CODEC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MSM6981-01RS | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:32 kbps ADPCM TRANSCODER |
| MSM6996 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Single Chip CODEC |
| MSM6996H | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Single Chip CODEC |
| MSM6996V | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Single Chip CODEC |
| MSM6997H | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Single Chip CODEC |
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