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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 的低電流運算，低反向泄露，低噪聲穩(wěn)壓二極管 |
| 文件頁數(shù)： | 26/40頁 |
| 文件大?。?/td> | 549K |
| 代理商： | ZL50212GB |
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ZL50212
Data Sheet
26
SEMICMF.019
Echo Canceller B (ECB): Control Register 1
Power-up 02
hex
Bit 6
INJDis
R/W Address: 20
hex
+ Base Address
Bit 3
Bit 2
Bypass
AdpDis
Bit 7
Reset
Bit 5
BBM
Functional Description of Register Bits
When high, the power-up initialization is executed which presets all register bits including
this bit and clears the Adaptive Filter coefficients.
When high, the noise injection process is disabled. When low, noise injection is enabled.
Bit 4
PAD
Bit 1
1
Bit 0
0
Reset
INJDis
BBM
When high, the Back to Back configuration is enabled. When low, the Normal
configuration is enabled. Note: Do not enable Extended-Delay and BBM configurations at
the same time. Always set
both
BBM bits of the two echo cancellers (Control Register 1)
of the same group to the same logic value to avoid conflict.
PAD
When high, 12dB of attenuation is inserted into the Rin to Rout path. When low, the Gains
register controls the signal levels.
When high, Sin data is by-passed to Sout and Rin data is by-passed to Rout. The
Adaptive Filter coefficients are set to zero and the filter adaptation is stopped. When low,
output data on both Sout and Rout is a function of the echo canceller algorithm.
When high, echo canceller adaptation is disabled. The Voice Processor cancels echo.
When low, the echo canceller dynamically adapts to the echo path characteristics.
Bits marked as “1” or “0” are reserved bits and should be written as indicated.
Control Register 1 (Echo Canceller B) Bit 0 is a reserved bit and should be written “0”.
Bypass
AdpDis
1
0
Power-up
00
hex
ECA: Control Register 2
R/W Address:
01
hex
+ Base Address
R/W Address:
21
hex
+ Base Address
Bit 1
MuteS
ECB: Control Register 2
Bit 7
TDis
Bit 6
PHDis
Bit 5
NLPDis
Functional Description of Register Bits
When high, tone detection is disabled. When low, tone detection is enabled. When both
Echo Cancellers A and B TDis bits are high, Tone Disable processors are disabled
entirely and are put into Power Down mode.
When high, the tone detectors will trigger upon the presence of a 2100 Hz tone regardless
of the presence/absence of periodic phase reversals. When low, the tone detectors will
trigger only upon the presence of a 2100 Hz tone with periodic phase reversals.
When high, the non-linear processor is disabled. When low, the non-linear processors
function normally. Useful for G.165 conformance testing.
Bit 4
AutoTD
Bit 3
NBDis
Bit 2
HPFDis
Bit 0
MuteR
TDis
PHDis
NLPDis
AutoTD
When high, the echo canceller puts itself in Bypass mode when the tone detectors detect
the presence of 2100 Hz tone. See PHDis for qualification of 2100 Hz tones.
When low, the echo canceller algorithm will remain operational regardless of the state of
the 2100 Hz tone detectors.
When high, the narrow-band detector is disabled. When low, the narrow-band detector is
enabled.
When high, the offset nulling high pass filters are bypassed in the Rin and Sin paths.
When low, the offset nulling filters are active and will remove DC offsets on PCM input
signals.
When high, data on Sout is muted to quiet code. When low, Sout carries active code.
When high, data on Rout is muted to quiet code. When low, Rout carries active code.
NBDis
HPFDis
MuteS
MuteR
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| 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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