发明名称 |
Dynamic random access memory (DRAM) based content addressable memory (CAM) cell |
摘要 |
A ternary content addressable memory (CAM) cell includes a dynamic random access memory (DRAM) cell storing data values and a DRAM cell storing mask values. The mask values control a masking circuit. The CAM cell also includes a compare circuit coupled among the DRAM cell and the masking circuit. The compare circuit of an embodiment receives data and comparand data and affects a logical state of a match line in response to a predetermined relationship between the data and comparand data. The compare circuit includes a first pair of transistors coupled for conduction state control by the comparand data and a second pair of transistors coupled for conduction state control by the data. The first pair of transistors includes two n-channel transistors. The second pair of transistors includes one n-channel and one p-channel transistor. A sense amplifier couples to the match line to detect changes in match line logical state.
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申请公布号 |
US6760241(B1) |
申请公布日期 |
2004.07.06 |
申请号 |
US20020273629 |
申请日期 |
2002.10.18 |
申请人 |
NETLOGIC MICROSYSTEMS, INC. |
发明人 |
GHARIA NILESH A. |
分类号 |
G11C15/04;(IPC1-7):G11C15/00 |
主分类号 |
G11C15/04 |
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