The IDT77301 UtopiaFIFO is a high-speed, low power single input port supplying four demultiplexing FIFO output ports. Each of the four output synchronous (clocked) FIFOs are 64 words (128 bytes) in depth. Data is written to the input port in "cells" (fixed length data packets). The cell size is programmable from 16 bytes to 128 bytes. The input port can be configured to support 9-bit or 18-bit wide data buses. (Multiple 77301's can be configured to handle 32 and 64-bit buses with no additional logic.)