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ZL50212 PDF даташит

Спецификация ZL50212 изготовлена ​​​​«Zarlink Semiconductor Inc» и имеет функцию, называемую «288 Channel Voice Echo Canceller».

Детали детали

Номер произв ZL50212
Описание 288 Channel Voice Echo Canceller
Производители Zarlink Semiconductor Inc
логотип Zarlink Semiconductor Inc логотип 

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ZL50212 Даташит, Описание, Даташиты
Features
• ZL50212 has nine Echo Voice Processors in a
single BGA package. This single device provides
288 channels of 64 msec echo cancellation or 144
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 ZL50212 provides more than 63% board
space savings when compared with the nine 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
• 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
ZL50212
288 Channel Voice Echo Canceller
Data Sheet
March 2003
Ordering Information
ZL50212GB 535 - Ball BGA
-40°C to +85°C
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
Description
The ZL50212 Voice Echo Canceller implements a cost
effective solution for telephony voice-band echo
cancellation conforming to ITU-T G.168 requirements.
The ZL50212 architecture contains 144 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 288 channels of 64 milliseconds to 144
channels of 128 milliseconds echo cancellation or any
combination of the two configurations. The ZL50212
supports ITU-T G.165 and G.164 tone disable
requirements.
Rin1...Rin9
Sin1....Sin9
D0....D7
CS1..CS9
A0..A12
RESET1..RESET9
ZL50212GB
EVP1 EVP2 EVP3
EVP4 EVP9 EVP5
EVP6 EVP7 EVP8
Rout1..Rout9
Sout1..Sout9
IRQ1..IRQ9
DTA1..DTA9
Figure 1 - ZL50212 Device Overview
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ZL50212 Даташит, Описание, Даташиты
ZL50212
Data Sheet
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
ECA/ECB ECA/ECB ECA/ECB
Group 4 Group 5 Group 6
ECA/ECB ECA/ECB ECA/ECB
Group 8 Group 9 Group 10
ECA/ECB ECA/ECB ECA/ECB
Group 12 Group 13 Group 14
ECA/ECB ECA/ECB ECA/ECB
Group 3
ECA/ECB
Group 7
ECA/ECB
Group 11
ECA/ECB
Group 15
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
Rout
Sout
IC0
RESET
Figure 2 - Single Echo Voice Processor (EVP) Overview
Features of Echo Voice Processor (EVP)
• Each EVP can cancel echo tails of 64ms (32 channels) to 128ms (16 channels) with the ability to mix
channels at 128ms or 64ms in any combination
• Independent Power Down mode for each group of 2 channels for power management
• 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
• Compatible to ST-BUS and GCI interface at 2Mb/s serial PCM
• PCM coding, µ/A-Law ITU-T G.711 or sign magnitude
• Per channel Fax/Modem G.164 2100Hz or G.165 2100Hz phase reversal Tone Disable
• Per channel echo canceller parameters control
• Transparent data transfer and mute
• Fast reconvergence on echo path changes
• Fully programmable convergence speeds
• Patented Advanced Non-Linear Processor with high quality subjective performance
• Protection against narrow band signal divergence and instability in high echo environments
• 0 dB to -12 dB level adjusters (3 dB steps) at all signal ports
• Offset nulling of all PCM channels
• 10 MHz or 20 MHz master clock operation
• 3.3 V pads and 1.8V Logic core operation with 5-Volt tolerant inputs
• IEEE-1149.1 (JTAG) Test Access Port
2 Zarlink Semiconductor Inc.









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ZL50212 Даташит, Описание, Даташиты
Data Sheet
ZL50212
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H ZL50212GB
J BGA BALL GRID ARRAY
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AA
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AD
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Figure 3 - 535 Ball BGA Ball Grid Array
A
B
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D
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J
K
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Zarlink Semiconductor Inc.
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Номер в каталогеОписаниеПроизводители
ZL50211256 Channel Voice Echo CancellerZarlink Semiconductor
Zarlink Semiconductor
ZL50212288 Channel Voice Echo CancellerZarlink Semiconductor Inc
Zarlink Semiconductor Inc

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