CAM cell array, TCAM cell, TCAM cell array, address search memory, and network address search apparatus

摘要

A content addressable memory (CAM) cell array includes a first-stage memory cell array and a second-stage memory cell array. Only when data on search output lines (match lines) connected to the first-stage memory cell array are coincident, the second-stage memory cell array performs search operation. Therefore, power consumption of the CAM cell array can be reduced.