An integrated circuit for self-routing data and voice switching

This paper describes the development of the architecture and implementation of a self-routing switch-fabric chip which accommodates packetized voice and data traffic. A prototype VLSI chip has been built in a one-micron CMOS standard cell technology. The prototype has 16 input and 4 output ports. Each port supports a data rate of 32 Mb/s. A fabric with 16 input and 16 output ports can be configured from four prototype chips. The fabric routes traffic from any input to any output port. The chip has internal memory for queuing to resolve output port contention, and is designed for use as a building block to construct larger switch fabric sizes.<>