Patent · US Active

Ternary content addressable memory

US8848412B1 · kind B1 · utility

17Cited by

3References

16Claims

0Family size

Assignee

Arm Limited · GB

Inventors

Gus Yeung · Austin, US
Yew Keong Chong · Austin, US
Wang-Kun Chen · Austin, US

Key dates

Filing date	Jul 5, 2013
Grant date	Sep 30, 2014
Priority date	—
Expiry date	Jul 5, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG11C11/56
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A ternary content addressable memory (TCAM) has at least one TCAM cell comprising first and second memory bitcells for storing first and second bit values representing a cell state comprising one of a first cell state, a second cell state and a mask cell state. The first and second memory bitcells share a pair of bitlines for accessing the first and second bit values. Access control circuitry is provided for triggering, in response to a clock signal, a read or write access to the first memory bitcell during a first portion of a clock cycle and triggering a read access or write access to the second read bitcell during a second portion of the clock cycle.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.