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參數(shù)資料
| 型號： | ZL50212GB |
| 元件分類： | 參考電壓二極管 |
| 英文描述： | Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode |
| 中文描述： | 250 的低電流運(yùn)算，低反向泄露，低噪聲穩(wěn)壓二極管 |
| 文件頁數(shù)： | 2/40頁 |
| 文件大小： | 549K |
| 代理商： | ZL50212GB |
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ZL50212
Data Sheet
2
SEMICMF.019
one channel of 128 milliseconds echo cancellation. This provides 288 channels of 64 milliseconds to 144 channels
of 128 milliseconds echo cancellation or any combination of the two configurations. The ZL5012 supports ITU-T
G.165 and G.164 tone disable requirements.
Figure 2 - Single Echo Voice Processor (EVP) Overview
Features of Echo Voice Processor (EVP)
Each EVP can cancel echo tails of 64ms (32 channels) to 128ms (16 channels) with the ability to mix
channels at 128ms or 64ms in any combination
Independent Power Down mode for each group of 2 channels for power management
Fully compliant to ITU-T G.165, G.168 (2000) and (2002) specifications
Passed all AT&T voice quality tests for carrier grade echo canceller
Compatible to ST-BUS and GCI interface at 2Mb/s serial PCM
PCM coding,
μ
/A-Law ITU-T G.711 or sign magnitude
Per channel Fax/Modem G.164 2100Hz or G.165 2100Hz phase reversal Tone Disable
Per channel echo canceller parameters control
Transparent data transfer and mute
Fast reconvergence on echo path changes
Fully programmable convergence speeds
Patented Advanced Non-Linear Processor with high quality subjective performance
Protection against narrow band signal divergence and instability in high echo environments
0 dB to -12 dB level adjusters (3 dB steps) at all signal ports
Offset nulling of all PCM channels
10 MHz or 20 MHz master clock operation
3.3 V pads and 1.8V Logic core operation with 5-Volt tolerant inputs
IEEE-1149.1 (JTAG) Test Access Port
RESET
Rout
IC0
Sout
DS CS R/W A12-A0 DTA
D7-D0
Echo Canceller Pool
V
SS
V
DD1 (3.3V)
TDI TDO TCK TRST
TMS
Rin
IRQ
C4i
F0i
MCLK
Fsel
ODE
Sin
Test Port
Microprocessor Interface
Timing
Unit
Serial
to
Parallel
Parallel
to
Serial
PLL
Group 0
ECA/ECB
Group 4
ECA/ECB
Group 8
ECA/ECB
Group 12
ECA/ECB
Group 1
ECA/ECB
Group 5
ECA/ECB
Group 9
ECA/ECB
Group 13
ECA/ECB
Group 2
ECA/ECB
Group 6
ECA/ECB
Group 10
ECA/ECB
Group 14
ECA/ECB
Group 3
ECA/ECB
Group 7
ECA/ECB
Group 11
ECA/ECB
Group 15
ECA/ECB
Note:
Refer to Figure 4
for EVP block
diagram
V
DD2 (1.8V)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| ZL50232GDC | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:32 Channel Voice Echo Canceller |
| ZL50232GDG2 | 制造商:Microsemi Corporation 功能描述: 制造商:Microsemi Corporation 功能描述:ECHO CANCELLER CHIP 32CH G.165/G.168/G.711 W/ TONE DETECTION - Trays 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC VOICE ECHO CANCELLER 208LBGA 制造商:Microsemi Corporation 功能描述:IC VOICE ECHO CANCELLER 208LBGA |
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