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Zarlink Semiconductor
Zarlink Semiconductor

ZL50211 Datasheet Preview

ZL50211 Datasheet

256 Channel Voice Echo Canceller

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ZL50211 pdf
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.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.
Copyright 2003-2006, Zarlink Semiconductor Inc. All Rights Reserved.



Zarlink Semiconductor
Zarlink Semiconductor

ZL50211 Datasheet Preview

ZL50211 Datasheet

256 Channel Voice Echo Canceller

No Preview Available !

ZL50211 pdf
ZL50211
Data Sheet
Description
The ZL50211 Voice Echo Canceller implements a cost effective solution for telephony voice-band echo cancellation
conforming to ITU-T G.168 requirements. The ZL50211 architecture contains 128 groups of two echo cancellers
(ECA and ECB) which can be configured to provide two channels of 64 milliseconds or one channel of 128
milliseconds echo cancellation. This provides 256 channels of 64 milliseconds to 128 channels of 128 milliseconds
echo cancellation or any combination of the two configurations. The ZL50211 supports ITU-T G.165 and G.164 tone
disable requirements.
Rin
Sin
MCLK
Fsel
C4i
F0i
VDD1 (3.3V)
VSS
VDD2 (1.8V)
ODE
Serial
to
Parallel
PLL
Timing
Unit
Echo Canceller Pool
Group 0 Group 1 Group 2 Group 3
ECA/ECB ECA/ECB ECA/ECB ECA/ECB
Group 4 Group 5 Group 6 Group 7
ECA/ECB ECA/ECB ECA/ECB ECA/ECB
Group 8 Group 9 Group 10 Group 11
ECA/ECB ECA/ECB ECA/ECB ECA/ECB
Group 12 Group 13 Group 14 Group 15
ECA/ECB ECA/ECB ECA/ECB ECA/ECB
Parallel
to
Serial
Note:
Refer to Figure 4
for EVP block
diagram
Microprocessor Interface
Test Port
DS CS R/W A12-A0 DTA D7-D0 IRQ TMS TDI TDO TCK TRST
Figure 2 - Single Echo Voice Processor (EVP) Overview
Rout
Sout
IC0
RESET
2
Zarlink Semiconductor Inc.


Part Number ZL50211
Description 256 Channel Voice Echo Canceller
Maker Zarlink Semiconductor
Total Page 30 Pages
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