ZL50212

ZL50212 288 Channel Voice Echo Canceller Data Sheet 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 Ordering Information ZL50212GB 535 - Ball BGA -40°C to +85 °C March 2003 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...