MT93L00AV [MICROSEMI]

The MT93L00 architecture contains 16 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 32 channels of 64 milliseconds to 16 channels of 128 milliseconds echo cancellation or any combination of the two configurations. The device supports ITU-T G.165 and G.164 tone disable requirements and features independent multiple channels of echo cancellation, protection against narrow band signal divergence, independent power down mode for each group of 2 channels, 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 V tolerant inputs, field proven high quality performance, compatibility to ST-BUS and GCI interface at 2 Mbps serial PCM, no external memory required, non-multiplexed microprocessor interface, PCM coding (µ/A-Law ITU-T G.711 or sign magnitude), IEEE-1149.1 (JTAG) Test Access Port, per channel Fax/Modem tone disable, per channel echo canceller parameters control, transparent data transfer and mute, fast reconvergence on echo path changes, and non-linear processor with high quality subjective performance.