Neha Sharma , Nidhish tiwari
Published in: International Journal of Innovative Science and Research Technology
Volume/Issue: Volume 1 Issue 4
Google Scholar: https://goo.gl/Aw0hbs
The requirement for the storage has raised day by day. The searching mechanism of data in the memory is mainly faced by the users these days. It also increases consumption of power, access time & cost. The designs of TCAM constituted over SRAM are referred as ZTCAM is a special memory type that takes search word as input & out-produces address of that word that is stored over data bank. The traditional TCAM table is logically split by ZTCAM through columns & rows and performs it over to associated memory blocks. In the searching process, memory blocks are evaluated by the associated sub words of input word & match address is generated. As compared to the RAM, TCAM has to deal with some limitations like we put the RAM, TCAM in contrast to each other that have some limitations like slower access time, less storage density, complicated design & high cost. In this paper, we have proposed a low costing & area effective novel design for TCAM based over SRAM called ZTCAM that imitates working of TCAM. The traditional TCAM table is split into rows & columns in hybrid TCAM sub parts & their mapping is done as per related memory blocks, in search operation memory blocks are assessed through their related sub words of input words & a match address is provided. In modified design like OATAM table is eliminated and a mapping is performed from VMs to OATs. This minimizes utilization of resources by usage of memory & therefore improves speed & performance. It is a tough job to design & map OATAM tables as the number of bits in input word increase the size of OATAM table. Therefore as OATAM table is eliminated, VMS is mapped to OAT & therefore TCAM functionality is achieved.
Keywords: TCAM, Hybrid partitioning, Application-specific integrated circuit, memory architecture, priority encoder.