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Zarlink Semiconductor - AEC

Numéro de référence ZL38003
Description AEC
Fabricant Zarlink Semiconductor 
Logo Zarlink Semiconductor 





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ZL38003 fiche technique
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ZL38003
AEC with Noise Reduction & Codecs for
Digital Hands-Free Communication
Data Sheet
A full Design Manual is available to qualified
customers. To register, please send an email to
Features
• Handles up to -6 dB acoustic echo return loss
• 127 ms acoustic echo canceller
• Provides up to 12 dB of Noise Reduction
• Operate in two modes, Dual Analog mode and
single Analog mode (other port is digital PCM)
• PCM Data Formats in single Port mode- 16-bit
Linear, companded ITU-T A-law or U-law
• Advanced NLP design - full duplex speech with
no switched loss on audio paths
• Tracks changing echo environment quickly
• Adaptation algorithm converges even during
Double-Talk
• Designed for performance in high background
noise environments
• Provides protection against narrow-band signal
divergence
November 2005
Ordering Information
ZL38003GMG2 81 Ball CBGA Trays, Bake & Drypack
-40°C to +85°C
• Howling prevention eliminates uncontrolled
oscillation in high loop gain conditions
• AGC on speaker path
• Transparent data transfer and mute options
• Boot loadable for future factory software upgrades
• Serial micro-controller interface
• Two 16 bit linear ACD and DAC that meet ITU-T
G.711/712 recommendations
• Four Audio TX/RX Interfaces
• Differential Microphone Inputs
• Programmable Bias Voltage Output for Electret
microphones
• Microphone Presence Detection, Microphone
Mute
SCLK
CS_CODEC
CS_AEC
DATA1
DATA2
FPi
C4i
Rin
Sout
Serial
Microport
Interface
PCM
Timing
AEC
Rout/Sout
Sin/Rin
MCLK
RESETB
G.712
Codec
#1
G.712
Codec
#0
Crosspoint
AUXTONE
Audio Interface
#3
Audio Interface
#2
Audio Interface
#1
Audio Interface
#0
Figure 1 - Block Diagram
1
Zarlink Semiconductor Inc.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.
Copyright 2005, Zarlink Semiconductor Inc. All Rights Reserved.
EAR
MIC
BIAS
MICDET
EAR
MIC
BIAS
MICDET
EAR
MIC
EAR/SPEAKER
MIC
BIAS

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