參數(shù)資料
型號： MT9123
廠商： Mitel Networks Corporation
英文描述： Dual Voice Echo Canceller(雙話音回聲消除器)
中文描述： 雙語音回聲消除（雙話音回聲消除器）
文件頁數(shù)： 12/32頁
文件大?。?/td> 191K
代理商： MT9123
MT9123
Preliminary Information
8-56
Function
Controllerless
selected when pins CONFIG1 & 2
≠
00
Controller
selected when pins CONFIG1 & 2 = 00
Normal Configuration
Set pins CONFIG1 to 1 and CONFIG2 1 to select this
configuration.
Set bits Extended-Delay to 0 and BBM to 0 in Control Reg-
ister 1 to select.
Back-to-Back
Configuration
Set pins CONFIG1 to 1 and CONFIG2 to 0 to select
this configuration.
Set bit BBM to 1 in Control Register 1 to select.
Extended Delay
Configuration
Set pins CONFIG1 to 0 and CONFIG2 to 1 to select
this configuration.
Set bit Extended-Delay to 1 in Control Register 1 to select.
Mute
Set pins S2/S1 to 00 and S4/S3 to 00 to select for Echo
Canceller A and Echo Canceller B respectively.
Set bit MuteR to 1 or MuteS to 1 in Control Register 2 to
select.
Bypass
Set pins S2/S1 to 01 and S4/S3 to 01 to select for Echo
Canceller A and Echo Canceller B, respectively.
Set bit Bypass to 1 in Control Register 1 to select.
Disable Adaptation
Set pins S2/S1 to 10 and S4/S3 to 10 to select for Echo
Canceller A and Echo Canceller B, respectively.
Set bit AdaptDis to 1 in Control Register 1 to select.
Enable Adaptation
Set pins S2/S1 to 11 and S4/S3 to 11 to select for Echo
Canceller A and Echo Canceller B, respectively.
Set bits AdaptDis to 0 and Bypass to 0 in Control Register
1 to select.
SSI
Tie pin F0i to VSS to select.
Tie pin F0i to VSS to select.
ST-BUS
Apply a valid ST-BUS frame pulse to F0i pin to select.
Apply a valid ST-BUS frame pulse to F0i pin to select.
12dB Attenuator
Always disabled.
Set bit PAD to 1 in Control Register 1 to enable.
Double-Talk
Detector
Continuously enabled which disables filter adaptation
when double-talk is detected.
The detection threshold can be controlled via Double-Talk
Detection Threshold Register 1 and 2.
Non-Linear
Processor
Set pin NLP to 1 to enable.
Set bit NLPDis to 1 to disable.
PCM Law
Set pin LAW to 1 or 0 to select A-Law or
μ
-Law
respectively.
Set pin LAW to 1or 0 to select A-Law or
μ
-Law
respectively.
PCM Format
Set pin FORMAT to 0 or 1 to select Sign-Magnitude or
ITU-T format respectively.
Set pin FORMAT to 0 or 1 to select Sign-Magnitude or
ITU-T format respectively.
Narrow-Band Signal
Detector
Continuously enabled which disables the filter adapta-
tion when narrow band signal is detected.
Set bit NBDis to 1 in Control Register 2 to disable.
Offset Null Filter
Continuously enabled which removes the DC compo-
nent in the PCM input.
Set bit HPFDis to 1 in Control Register 2 to disable.
Table 7 - MT9123 Function Control Summary
相關(guān)PDF資料
PDF描述
MT9123AP CMOS Dual Voice Echo Canceller
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT9123AE 制造商:Microsemi Corporation 功能描述:ECHO CANCELLER CHIP 2CH G.165/G.711 W/OUT TONE DETECTION 28P - Rail/Tube
MT9123AE1 制造商:Microsemi Corporation 功能描述:
MT9123AP 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS Dual Voice Echo Canceller
MT9123AP1 制造商:Microsemi Corporation 功能描述:ECHO Canceller Chip 2-CH G.165/G.711 With Tone Detection 28-Pin PLCC Tube 制造商:Microsemi Corporation 功能描述:ECHO CANCELLER CHIP 2CH G.165/G.711 W/OUT TONE DETECTION 28P - Rail/Tube 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC ECHO CANCELLER DUAL 28PLCC 制造商:Microsemi Corporation 功能描述:IC ECHO CANCELLER DUAL 28PLCC
MT9123APR1 制造商:Microsemi Corporation 功能描述:ECHO CANCELLER CHIP 2CH G.165/G.711 W/OUT TONE DETECTION 28P - Tape and Reel 制造商:Zarlink Semiconductor Inc 功能描述:ECHO CANCELLER CHIP 2CH G.165/G.711 W/OUT TONE DETECTION 28P - Tape and Reel
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