Hybrid Type CAM Design for Both Power and Performance Master Slave Match Line

Content-addressable memory (CAM) is used to compare the search data with all the stored data in parallel. Due to the parallel comparison feature where a large amount of transistors are active on each lookup, however, the power consumption of CAM is usually considerable. There are two conventional CAM designs, i.e., NOR-type and NAND-type CAMs. The NOR-type CAM provides the best search performance, but its cost is a large amount of power consumption. In contrast, the NAND-type CAM trades the search performance for a low-power feature. In Master – Slave match line design, we used NOR type CAM cell. So that the power consumption is quite high. So, in this work presents a hybrid-type CAM design which aims to combine the performance advantage of the NOR-type CAM with the power efficiency of the NAND-type CAM. In our design, a CAM word is divided into two segments, and then all the CAM cells are decoupled from the match line. By minimizing both the match line capacitances and switching activities, our design can largely reduce the power consumption of CAM. Because the hybrid type CAM provides a fast pull-down path to speed up the light weight match line discharge. Index Terms – Content-addressable memory (CAM), hybrid-type CAM, NAND-type CAM, NOR-type CAM.