Low power, hash-content addressable memory architecture

摘要

A comparand word is input to a plurality of hash circuits, with each hash circuit responding to a different portion of the comparand word. The hash circuits output a hash signal which enables or precharges portions of a content addressable memory CAM. The comparand word is also input to the CAM. The CAM compares the comparand word in the precharged portions of the CAM and outputs information responsive to the comparison. When Internet addresses are processed, the output information is either port information or an index for locating port information.