Content addressable memory having longest prefix matching function
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United States of America Patent
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Jan 7, 2003
Grant Date -
N/A
app pub date -
Jul 2, 1999
filing date -
Jul 2, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A CAM cell array (100) that can provide a longest prefix matching operation without necessarily requiring data values to be stored in a particular order. A comparand value can be applied to a CAM cell array (100) to generate ternary match indications. The mask/prefix data values of ternary match indications can be combined to generate a longest prefix value. The longest prefix value can be compared with the mask/prefix data values of the ternary match indications to indicate a data value having a longest prefix match with the comparand value.
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