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參數(shù)資料
| 型號(hào)： | MT9126 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Quad ADPCM Transcoder(四ADPCM編解碼器) |
| 中文描述： | 四差分PcM轉(zhuǎn)碼器（四差分PcM編解碼器） |
| 文件頁(yè)數(shù)： | 1/25頁(yè) |
| 文件大小： | 138K |
| 代理商： | MT9126 |
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8-1
Features
Full duplex transcoder with four encode
channels and four decode channels
32 kb/s, 24 kb/s and 16 kb/s ADPCM coding
complying with ITU-T (previously CCITT) G.726
(without 40 kb/s), and ANSI T1.303-1989
Low power operation, 25 mW typical
Asynchronous 4.096 MHz master clock
operation
SSI and ST-BUS interface options
Transparent PCM bypass
Transparent ADPCM bypass
Linear PCM code
No microprocessor control required
Simple interface to Codec devices
Pin selectable
μ
Law or A-Law operation
Pin selectable ITU-T or signed magnitude PCM
coding
Single 5 volt power supply
Applications
Pair gain
Voice mail systems
Wireless telephony systems
Description
The Quad ADPCM Transcoder is a low power,
CMOS device capable of four encode and four
decode functions per frame. Four 64 kbit/s PCM
octets are compressed into four 32, 24 or 16 kbit/s
ADPCM words, and four 32, 24 or 16 kbit/s ADPCM
words are expanded into four 64 kbit/s PCM octets.
The 32, 24 and 16 kbit/s ADPCM transcoding
algorithms
utilized
Recommendation G.726 (excluding 40 kbit/s), and
ANSI T1.303 - 1989.
conform
to
ITU-T
Switching, on-the-fly, between 32 kbit/s and 24 kbit/s
ADPCM, is possible by controlling the appropriate
mode select (MS1 - MS6) control pins. All optional
functions of the device are pin selectable allowing a
simple interface to industry standard codecs, digital
phone devices and Layer 1 transceivers. Linear
coded PCM is provided to facilitate external DSP
functions .
Ordering Information
MT9126AE
28 Pin Plastic DIP
MT9126AS
28 Pin SOIC
-40
°
C to +85
°
C
ISSUE 3
July 1998
ADPCM
I/O
PCM
I/O
Control Decode
VDD VSS PWRDN IC
MS1 MS2
A/
μ
FORMAT
MS5
MS4
MS3
MS6 LINEAR SEL
Timing
ADPCMi
ADPCMo
ENB1
ENB2/F0od
BCLK
F0i
MCLK/C4i
C2o
EN1
EN2
PCMo1
PCMi1
PCMo2
PCMi2
Full Duplex
Quad
Transcoder
Figure 1 - Functional Block Diagram
MT9126
Quad ADPCM Transcoder
CMOS
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MT9160B | ISO2-CMOS 5 Volt Multi-Featured Codec (MFC) |
| MT9160BE | ISO2-CMOS 5 Volt Multi-Featured Codec (MFC) |
| MT9160BS | ISO2-CMOS 5 Volt Multi-Featured Codec (MFC) |
| MT9160 | ISO2-CMOS 5 Volt Multi-Featured Codec (MFC) |
| MT9160AE | ISO2-CMOS 5 Volt Multi-Featured Codec (MFC) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT9126AE | 制造商:MITEL 制造商全稱(chēng):Mitel Networks Corporation 功能描述:CMOS Quad ADPCM Transcoder |
| MT9126AE1 | 制造商:Microsemi Corporation 功能描述:ADPCM VOICE COMPRESSION G.726 16KBPS/24KBPS/32KBPS 5V 28PDIP - Rail/Tube 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC TRANSCODER QUAD ADPCM 28PDIP 制造商:Microsemi Corporation 功能描述:IC TRANSCODER QUAD ADPCM 28PDIP |
| MT9126AS | 制造商:Microsemi Corporation 功能描述: |
| MT9126AS1 | 制造商:Microsemi Corporation 功能描述:ADPCM VOICE COMPRESSION G.726 16KBPS/24KBPS/32KBPS 5V 28SOIC - Rail/Tube 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC TRANSCODER QUAD ADPCM 28SOIC 制造商:Microsemi Corporation 功能描述:IC TRANSCODER QUAD ADPCM 28SOIC |
| MT9126ASR | 制造商:Microsemi Corporation 功能描述: |
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