參數(shù)資料
型號(hào)： ZL50232GD
廠商： ZARLINK SEMICONDUCTOR INC
元件分類： 數(shù)字傳輸電路
英文描述： DATACOM, ISDN ECHO CANCELLER, PBGA208
封裝： 17 X 17 MM, 1.30 MM HEIGHT, LBGA-208
文件頁(yè)數(shù)： 24/41頁(yè)
文件大?。?/td> 809K
代理商： ZL50232GD
ZL50232
Data Sheet
30
Zarlink Semiconductor Inc.
The Table 5 below is the same Table shown on page 9)
Power-up
FBhex
ECA: Control Register 3
R/W Address:
08hex + Base Address
ECB: Control Register 3
R/W Address:
28hex + Base Address
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
NLRun2
InjCtrl
NLRun1
RingClr
Reserve
PathClr
PathDet
NLPSel
Functional Description of Register Bits
NLRun2
When high, the comfort noise level estimator actively rejects double-talk as being background
noise. When low, the noise level estimator makes no such distinction.
InjCtrl
Selects which noise ramping scheme is used. See Table below.
NLRun1
When high, the comfort noise level estimator actively rejects uncancelled echo as being
background noise. When low, the noise level estimator makes no such distinction.
RingClr
When high, the instability detector is activated. When low, the instability detector is disabled.
Reserve
Reserved bit. Must always be set to one for normal operation.
PathClr
When high, the current echo channel estimate will be cleared and the echo canceller will enter
fast convergence mode upon detection of a path change. When low, the echo canceller will keep
the current path estimate but revert to fast convergence mode upon detection of a path change.
Note: this bit is ignored if PathDet is low.
PathDet
When high, the path change detector is activated. When low, the path change detector is
disabled.
NLPSel
When high, the Advanced NLP is selected. When low, the original NLP is selected.
Feature
Register or Bit(s)
Advanced
NLP Default
Value
Original NLP
Default Value
NLP Selection
NLPSel (Control Register 3)
1
0 (feature
not supported)
Reject uncancelled echo as noise
NLRun1 (Control Register 3)
1
0 (feature
not supported)
Reject double-talk as noise
NLRun2 (Control Register 3)
1
0 (feature
not supported)
Noise level estimator ramping
scheme
InjCtrl (Control Register 3)
1
0 (feature
not supported)
Noise level ramping rate
NLInc (Noise Control)
5hex
Chex
Noise level scaling
Noise Scaling
16hex
74hex
Table 5 - Comparison of the NLP Types
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
ZL50232QCC 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:32 Channel Voice Echo Canceller
ZL50232QCC1 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:32 Channel Voice Echo Canceller
ZL50232QCG1 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 Corporation 功能描述:PB FREE 32 CHANNEL VOICE ECHO CANCELLER
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