Spiking neural network-based auto-associative memory using FPGA interconnect delays

This paper describes the design of an auto-associative memory based on a spiking neural network (SNN). The architecture is able to effectively utilize the massive interconnect resources available in FPGA architectures as a good match to the axons in biological neural networks. A complete implementation of the memory on a single FPGA is presented. The signal processing circuitry is composed from simple, parallel building blocks and the training logic is implemented using an on-chip soft processor.