ZL50211_06 Datasheet, PDF (1/42 Pages) Zarlink Semiconductor Inc – 256 Channel Voice Echo Canceller

ZL50211
256 Channel Voice Echo Canceller
Data Sheet
Features
• ZL50211 has eight Echo Voice Processors in a
single BGA package. This single device provides
256 channels of 64 msec echo cancellation or
128 channels at 128 msec echo cancellation
• Each Echo Voice Processor has the capability of
cancelling echo over 32 channels
• Each Echo Voice Processor (EVP) shares the
address bus and data bus with each other
• 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
• The ZL50211 provides more than 58% board
space savings when compared with the eight
Echo Voice Processors packaged devices
• Each EVP has a Patented Advanced Non-Linear
Processor with high quality subjective
performance
• Each EVP has protection against narrow band
signal divergence and instability in high echo
environments
January 2006
Ordering Information
ZL50211GBC 535 Ball BGA Trays
ZL50211GBG2 535 Ball BGA** Trays
**Pb Free Tin/Silver/Copper
-40°C to +85°C
• Each EVP can be programmed independently in
any mode e.g., Back-to-Back or Extended Delay
to provide capability of cancelling different echo
tails
• Each EVP has 0 to -12 dB level adjusters at all
signal ports (Rin, Sin, Sout and Rout)
• Each EVP has the same JTAG identification code
Applications
• Voice over IP network gateways
• Voice over ATM, Frame Relay
• T1/E1/J1 multichannel echo cancellation
• Wireless base stations
• Echo Canceller pools
• DCME, satellite and multiplexer system
Rin1...Rin8
Sin1....Sin8
D0....D7
CS1..CS8
A0..A12
RESET1..RESET8
ZL50211GB
EVP1
EVP2
EVP3
EVP4
EVP5
EVP6
EVP7 EVP8
Rout1..Rout8
Sout1..Sout8
IRQ1..IRQ8
DTA1..DTA8
Figure 1 - ZL50211 Device Overview
1
Zarlink Semiconductor Inc.
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Copyright 2003-2006, Zarlink Semiconductor Inc. All Rights Reserved.