zl50211 Zarlink Semiconductor, zl50211 Datasheet - Page 3

• Manufacturer Part Number: zl50211
• Description: 256 Channel Voice Echo Canceller
• Manufacturer: Zarlink Semiconductor

Features of Echo Voice Processor (EVP)
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Each EVP can cancel echo tails of 64 ms (32 channels) to 128 ms (16 channels) with the ability to mix
channels at 128 ms or 64 ms 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 2 Mb/s serial PCM
PCM coding, µ/A-Law ITU-T G.711 or sign magnitude
Per channel Fax/Modem G.164 2100 Hz or G.165 2100 Hz 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 1.8 V Logic core operation with 5-Volt tolerant inputs
IEEE-1149.1 (JTAG) Test Access Port
Zarlink Semiconductor Inc.
ZL50211
3
Data Sheet