zl50212 Zarlink Semiconductor, zl50212 Datasheet - Page 2

• Manufacturer Part Number: zl50212
• Description: 288 Channel Voice Echo Canceller
• Manufacturer: Zarlink Semiconductor

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Features of Echo Voice Processor (EVP)
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ZL50212
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
MCLK
Fsel
Rin
C4i
Sin
F0i
Parallel
Timing
Serial
PLL
Unit
to
Figure 2 - Single Echo Voice Processor (EVP) Overview
V
DD1 (3.3V)
DS CS R/W A12-A0 DTA
Group 12
ECA/ECB
ECA/ECB
ECA/ECB
ECA/ECB
Group 0
Group 4
Group 8
Microprocessor Interface
Zarlink Semiconductor Inc.
Echo Canceller Pool
Group 13
ECA/ECB
ECA/ECB
ECA/ECB
ECA/ECB
Group 1
Group 5
Group 9
V
SS
D7-D0
Group 10
Group 14
ECA/ECB
ECA/ECB
ECA/ECB
ECA/ECB
Group 2
Group 6
IRQ
V
DD2 (1.8V)
TMS
Group 11
Group 15
ECA/ECB
ECA/ECB
ECA/ECB
ECA/ECB
Group 3
Group 7
TDI TDO TCK TRST
Test Port
Note:
Refer to Figure 4
for EVP block
diagram
Parallel
Serial
ODE
to
Data Sheet
Rout
Sout
IC0
RESET