MT90823AG [Microchip]

The MT90823 Large Digital Switch is capable of switching up to 2,048 × 2,048 channels. It is designed to switch 64kb/s PCM or N x 64kb/s data, maintaining frame integrity in data applications and minimum throughput delay for voice applications on a per channel basis. The device features programmable per stream or per channel functions including message mode, input offset delay, and high impedance output control. Per stream input delay control is useful for managing large multi-chip switches. The input stream can be calibrated for input frame offset using a dedicated pin. Serial input streams support bit rates of 2.048, 4.096 or 8.192Mbit/s in 125µs frames. The device automatically identifies ST-BUS/GCI interfaces and supports both multiplexed and non-multiplexed microprocessor bus interfaces (Motorola compatible). It includes an internal loopback for diagnostics and JTAG test port.