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參數(shù)資料
| 型號： | ZL50212 |
| 廠商： | Zarlink Semiconductor Inc. |
| 英文描述： | 288 Channel Voice Echo Canceller |
| 中文描述： | 288頻道語音回聲消除器 |
| 文件頁數(shù)： | 14/43頁 |
| 文件大?。?/td> | 2166K |
| 代理商： | ZL50212 |
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ZL50212
Data Sheet
14
Zarlink Semiconductor Inc.
3.0
EVP Configuration
The EVP architecture contains 32 echo cancellers divided into 16 groups. Each group has two echo cancellers which
can be individually controlled (Echo Canceller A (ECA) and Echo Canceller B (ECB). They can be set in three distinct
configurations:
Normal, Back-to-Back,
and
Extended Delay
. See Figures 6, 7, and 8.
3.1
Normal Configuration
In Normal configuration, the two echo cancellers (Echo Canceller A and B) are positioned in parallel, as shown in
Figure 6, providing 64 milliseconds of echo cancellation in two channels simultaneously.
Figure 6 - Normal Device Configuration (64ms)
3.2
Back-to-Back Configuration
In Back-to-Back configuration, the two echo cancellers from the same group are positioned to cancel echo coming
from both directions in a single channel providing full-duplex 64ms echo cancellation. See Figure 7. This
configuration uses only one timeslot on PORT1 and PORT2 and the second timeslot normally associated with ECB
contains zero code. Back-to-Back configuration allows a no-glue interface for applications where bidirectional echo
cancellation is required.
Figure 7 - Back-to-Back Device Configuration (64ms)
Rin
Rout
Sout
Sin
echo
path A
echo
path B
+
-
channel A
channel A
+
-
channel B
channel B
ECA
ECB
Adaptive
Filter (64ms)
Adaptive
Filter (64ms)
PORT1
PORT2
+
ECA
Sin
Sout
Rout
Rin
-
ECB
+
-
echo
path
echo
path
Adaptive
Filter (64ms)
Adaptive
Filter (64ms)
PORT1
PORT2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ZL50232GDC | 32 Channel Voice Echo Canceller |
| ZL50232QCC | Aluminum Electrolytic Capacitor; Capacitor Type:General Purpose; Voltage Rating:35VDC; Capacitor Dielectric Material:Aluminum Electrolytic; Operating Temperature Range:-40 C to +85 C; Capacitance:47uF RoHS Compliant: Yes |
| ZL50232QCC1 | 32 Channel Voice Echo Canceller |
| ZL50232 | 32 Channel Voice Echo Canceller |
| ZL50233GD | 4 Channel Voice Echo Cancellor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ZL50212/GBC | 制造商:Microsemi Corporation 功能描述:ECHO CANCELLER CHIP 288CH G.164/G.165/G.168/G.711 W/ TONE DE - Trays |
| ZL50212GB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecomm/Datacomm |
| ZL50232 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:32 Channel Voice Echo Canceller |
| ZL50232/GDC | 制造商:Microsemi Corporation 功能描述:ECHO CANCELLER CHIP 32CH G.164/G.165/G.168/G.711 W/ TONE DET - Trays |
| ZL50232/QCC | 制造商:Microsemi Corporation 功能描述:ECHO CANCELLER CHIP 32CH G.164/G.165/G.168/G.711 W/ TONE DET - Trays |
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