Content addressable memory having bidirectional lines that...

Details Content addressable memory having bidirectional lines that... Content addressable memory having bidirectional lines that...

2011-03-22

2011-03-22

Hoang, Huan (Department: 2827)

Static information storage and retrieval

Associative memories

C365S049110, C365S049150, C365S049160, C365S049170, C365S049180, C365S049120, C365S049130, C711S108000

Reexamination Certificate

active

07911818

ABSTRACT:
A CAM column structure includes an interface that drives search data to a plurality of CAM cells via a search line pair. The CAM cells are divided into sections, each section including: a set of CAM cells, a bit line pair coupled to the set of CAM cells, a sense amplifier coupled to the bit line pair, a tri-state read buffer configured to drive read data from the sense amplifier to the search line pair, and a pair of tri-state write buffers configured to drive write data from the search line pair to the bit line pair. In one embodiment, the pair of tri-state write buffers is replaced by a pair of switches that couple the search line pair to the sense amplifier. The search line pair may be segmented by tri-state buffers, which are controlled to drive the search, read and write data along the search line pair.

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