Content addressed memories

Details Content addressed memories Content addressed memories

2005-03-29

2005-03-29

Moazzami, Nasser (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S128000, C365S049130, C365S230010, C365S230040, C365S230090

Reexamination Certificate

active

06874058

ABSTRACT:
A content addressable memory comprises a CAM control logic unit and plural cells connected in a chain. Each cell comprises a memory block coupled to a common address bus, a comparator coupled to a common data bus and to the data interface of the memory block. A switch couples the data interface of the memory block with the data bus, and a logic block including a Match flip-flop. The memory is operable in a Search phase and an Access phase. In the Search phase, a sequence of words on the common data bus is serially matched with the contents of a sequence of addresses in the memory blocks. In the Access phase, the cells matched in the Search phase are made serially available for access via common address and data buses.

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