Squaring the FIFO in GasP

This paper presents a method for designing a special type of asynchronous circuits, called GasP circuits, and illustrates the method by a novel design of a low-latency, high-throughput FIFO, called a square FIFO. The design method includes a graphical notation that permits the specification not only of circuit topology but also of the time separation between any two succeeding events. A square FIFO test chip has been fabricated in a 0.35 μm CMOS process through MOSIS. Test results show that the square FIFO chip can sustain a maximum throughput of 1.56 giga data items per second for a large range of occupancies