參數(shù)資料
型號(hào)： ZL38002DGA1
廠商： ZARLINK SEMICONDUCTOR INC
元件分類： 數(shù)字傳輸電路
英文描述： Low-Voltage Acoustic Echo Canceller With Noise Reduction
中文描述： DATACOM, ISDN ECHO CANCELLER, PDSO36
封裝： 0.300 INCH, LEAD FREE, QSOP-36
文件頁(yè)數(shù)： 9/47頁(yè)
文件大?。?/td> 440K
代理商： ZL38002DGA1
ZL38002
Data Sheet
9
Zarlink Semiconductor Inc.
1.13 Master Bypass
A PCM bypass function is provided to allow transparent transmission of pcm data through the ZL38002. When the
bypass function is active, PCM data passes transparently from Rin to Rout and from Sin to Sout, with bit-wise
integrity preserved.
When the Bypass function is selected, most internal functions are powered down to provide low power
consumption.
The BYPASS control bit is located in the main control MC register.
1.14 AEC Bypass
An AEC bypass function is provided to allow the user to bypass only the AEC (i.e the echo estimate from the
adaptive filter is not subtracted from the Send path). This bypass does not effect any other function in the ZL38002.
The AEC BYPASS control bit is located in the Acoustic Echo Canceller Control Register (AECCR).
1.15 Adaptation Control
Adaptation control bit is located in the Acoustic Echo Canceller Control Register (Page 0, Address 21h). When the
ADAPT- bit is set to 1, the adaptive filter is frozen at the current state. In this state, the device continues to cancel
echo with the current echo model.
When the ADAPT- bit is set to 0, the adaptive filter is continually updated allowing the echo cancellor to adapt and
track changes in the echo path. This is the normal operating state ZL38002
1.16 Throughput Delay
In all modes, except ST-BUS/GCI operation, voice channels have 2 frames of constant delay. In ST-BUS/GCI
operation, the D and C channels have a delay of one frame.
1.17 Power Down / Reset
Holding the RESET pin at logic low will keep the ZL38002 device in a power-down state. In this state all internal
clocks are halted, and the DATA1, Sout and Rout pins are tristated.
The user should hold the RESET pin low for at least 200 msec following power-up. This will insure that the device
powers up in a proper state. Following any return of RESET to logic high, the user must wait for 8 complete 8 KHz
frames prior to writing to the device registers. During this time, the initialization routines will execute and set the
ZL38002 to default operation based on the installed algorithm.
相關(guān)PDF資料
PDF描述
ZL38002DGB1 Low-Voltage Acoustic Echo Canceller With Noise Reduction
ZL38065 32 Channel Voice Echo Canceller
ZL38065GDG 32 Channel Voice Echo Canceller
ZL38065QCG 32 Channel Voice Echo Canceller
ZL38065QCG1 32 Channel Voice Echo Canceller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ZL38002DGB1 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Low-Voltage Acoustic Echo Canceller With Noise Reduction
ZL38002DGE1 制造商:Microsemi Corporation 功能描述:ECHO CANCELLER CHIP 1CH G.711 W/OUT TONE DETECTION 36QSOP /B - Rail/Tube 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC ECHO CANCELLER AEC 36SSOP 制造商:Microsemi Corporation 功能描述:IC ECHO CANCELLER AEC 36SSOP
ZL38002DGF1 制造商:Microsemi Corporation 功能描述:ECHO CANCELLER CHIP 1CH G.711 W/OUT TONE DETECTION 36QSOP /B - Tape and Reel 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC ECHO CANCELLER AEC 36SSOP 制造商:Microsemi Corporation 功能描述:IC ECHO CANCELLER AEC 36SSOP
ZL38002QDG 制造商:Microsemi Corporation 功能描述:ECHO CANCELLER CHIP 1CH G.711 W/OUT TONE DETECTION 48TQFP - Trays
ZL38002QDG1 制造商:Microsemi Corporation 功能描述:ECHO CANCELLER CHIP 1CH G.711 W/OUT TONE DETECTION 48TQFP - Trays 制造商:Zarlink Semiconductor Inc 功能描述:ECHO CANCELLER CHIP 1CH G.711 W/OUT TONE DETECTION 48TQFP - Trays
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