Content Addressable Memory Architecture Pdf Download

In addition, the 9-T CAM cell provides the complete write, read, and comparison functions to refresh the data and verify its correctness before searching& Sys.E88-D(7), 14791485 (2005)CrossRefGoogle Scholar8.Natarajan, A., Jasinski, D., Burleson, W., et al.: A hybrid adiabatic content addressable memory for ultra low-power applicationsExternal links[edit]To achieve a different balance between speed, memory size and cost, some implementations emulate the function of CAM by using standard tree search or hashing designs in hardware, using hardware tricks like replication or pipelining to speed up effective performanceIEEE JUnlike a RAM chip, which has simple storage cells, each individual memory bit in a fully parallel CAM must have its own associated comparison circuit to detect a match between the stored bit and the input bitGreat Lakes Symposium on VLSI, Washington, D.C., USA, April 28-29, ppInstead of using typical NOR/NAND-type CAM cells with the single-ended ML, the proposed novel NAND CAM cell with the differential ML design can boost the speed of comparison without sacrificing power consumption

Browse Books & eBooks Conference Publications Courses Journals & Magazines Standards Topics Aerospace Bioengineering Communication, Networking & Broadcasting Components, Circuits, Devices & Systems Computing & Processing Engineered Materials, Dielectrics & Plasmas Engineering Profession Fields, Waves & Electromagnetics General Topics for Engineers Geoscience Nuclear Engineering Photonics & Electro-Optics Power, Energy, & Industry Applications Robotics & Control Systems Signal Processing & Analysis Transportation My Settings Content Alerts Search Alerts Preferences Purchase History Search History What can I access? Get Help Feedback Technical Support Resources and Help Subscribe There are cost disadvantages to CAM howeverTernary CAM (TCAM)[7] allows a third matching state of "X" or "don't care" for one or more bits in the stored dataword, thus adding flexibility to the searchThis works if (a) the entries are stored in order of decreasing network mask length, and (b) the hardware returns only the first matching entry; thus, the match with the longest network mask (longest prefix match) is usedU.Sof Solid-State Circuits38(11), 1958(1966)CrossRefGoogle Scholar6.Kramer, A., Denker, J.S., Flower, B., et al.: 2nd order adiabatic computation with 2N-2P and 2N-2N2P logic circuits6167 (1995)Google Scholar11.Moon, Y., Jeong, D.K.: A 3232-bit adiabatic register file with supply clock generatorThe extra circuitry also increases power dissipation since every comparison circuit is active on every clock cycleSolid-State Circuits41, 712 (2006)CrossRefGoogle Scholar13.Juan, T., Lang, T., Navarro Reducing, J.: TLB power requirements

In: ProcOne successful early implementation was a General Purpose Associative Processor IC and System.[4]References1.Chang, Y.-J., Liao, Y.-H.: Hybrid-Type CAM Design for Both Power and Performance EfficiencyIEEE JIEEE JRouting is done by consulting a routing table maintained by the router which contains each known destination network prefix, the associated network mask, and the information needed to route packets to that destinationStormon, C.D.; Troullinos, N.B.; Saleh, E.M.; Chavan, A.V.; Brule, M.R.; Oldfield, J.V.; A general-purpose CMOS associative processor IC and system, Coherent Research Inc., East Syracuse, NY, USA, IEEE Micro, DecSolid-State Circuits36, 956 (2001)CrossRefGoogle Scholar15.Arsovski, I., Sheikholeslami, A.: A mismatch-dependent power allocation technique for match-line sensing in content-addressable memories

A major interface definition for CAMs and other network search engines (NSEs) was specified in an interoperability agreement called the Look-Aside Interface (LA-1 and LA-1B) developed by the Network Processing Forum, which later merged with the Optical Internetworking Forum (OIF)doi:10.1016/0743-1066(91)90004-9Each subnet has a network mask that specifies which bits of the address are the network prefix and which bits are the host addressAlternative implementations[edit]This additional state is typically implemented by adding a mask bit ("care" or "don't care" bit) to every memory cellIn: Proc[8]The added search flexibility comes at an additional cost over binary CAM as the internal memory cell must now encode three possible states instead of the two of binary CAM.

IEEE JIf the data word is found, the CAM returns a list of one or more storage addresses where the word was found (and in some architectures, it also returns the contents of that storage address, or other associated pieces of data)of Solid-State Circuits33(5), 696701 (1998)CrossRefGoogle Scholar12.Pagiamtzis, K., Sheikholeslami, A.: Content-addressable memory (CAM) circuits and architectures: A tutorial and surveyIn: ProcCircuits and Syst., pAdditionally, match outputs from each cell in the data word must be combined to yield a complete data word match signal 3c092786bf

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