To cover the shortages of the existing FIFO architecture

a new FIFO architecture

WG-FIFO

is presented in this paper.The WG-FIFO encodes write/read pointer with a weighted-gray code

and controls write/read operation with a real-time global states detector.Simulation results show that the performance

area cost

and write/read operation efficiency are all considerably improved compared with other available FIFO architectures under the depth range of 4~16.For example

when the FIFO depth is 8 and the data width is 32

compared with B-FIFO

the highest clock frequency is increased by 31.6%

cell area cost is decreased 17.1%

and write/read efficiency is improved 47% at most.