Image Number 13 for United States Patent #8125811.
A CAM includes first and second memory units. The first memory unit includes: a first data memory cell for storing a first data bit; a first comparison circuit for comparing a first search bit with the first data bit to determine if there is a match, and outputting a first comparison result; and a first CMOS logic circuit for performing a logic operation on the first comparison result and outputting a first matching result. The second memory unit includes: a second data memory cell for storing a second data bit; a second comparison circuit for comparing a second search bit with the second data bit to determine if there is a match, and outputting a second comparison result; and a second static CMOS logic circuit for performing a logic operation on the first matching result and the second comparison result, and outputting an output matching result.
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