Implementation and evaluation of Ternary Content Addressable Memory with Individuality

This paper presents a Ternary Content Addressable Memory with Individuality (ITCAM) and its application. proposed architecture is constructed the ITCAM, master-slave scheme with ARM processor, and table conversion processing module. The ITCAM has manufacturing variations of each LSI, and executes individuality search. The master-slave scheme for the ITCAM and table conversion processing module are implemented on an evaluation board mounted with an ARM CPU and a FPGA. The results of implementation evaluation show that the frequency distribution of the ITCAM on the same FPGA chip is a normal distribution. The frequency variation of inter-FPGA chips ranges are form 94% to 103% on the basis of the frequency average. The reproducibility of variation is confirmed under certain conditions. Thus, the reported ITCAM is a promising solution for providing a little individuality to each LSI.