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ZL50211 Datasheet(PDF) 2 Page - Zarlink Semiconductor Inc |
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ZL50211 Datasheet(HTML) 2 Page - Zarlink Semiconductor Inc |
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2 / 42 page  ZL50211 Data Sheet 2 Zarlink Semiconductor Inc. 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 RESET Rout IC0 Sout DS CS R/W A12-A0 DTA D7-D0 Echo Canceller Pool VSS VDD1 (3.3V) TDI TDO TCK TRST TMS Rin IRQ C4i F0i MCLK ODE Sin Fsel Test Port Microprocessor Interface Timing Unit Serial to Parallel Parallel to Serial PLL Group 0 ECA/ECB Group 4 ECA/ECB Group 8 ECA/ECB Group 12 ECA/ECB Group 1 ECA/ECB Group 5 ECA/ECB Group 9 ECA/ECB Group 13 ECA/ECB Group 2 ECA/ECB Group 6 ECA/ECB Group 10 ECA/ECB Group 14 ECA/ECB Group 3 ECA/ECB Group 7 ECA/ECB Group 11 ECA/ECB Group 15 ECA/ECB Note: Refer to Figure 4 for EVP block diagram VDD2 (1.8V) |
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