Circuitry and method for resetting memory without a write cycle
AssigneeVirage Logic Corporation
InventorHoun Chang
Life of this patent
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AssigneeVirage Logic Corporation
InventorHoun Chang
Estimating the term…
Circuitry and associated method for resetting a memory storage cell without a dedicated write cycle therefor. Preferably, the storage cell is provided as part of an age_array employed for monitoring the usage of a Content Addressable Memory (CAM). When a match between search data and contents of a particular location of the CAM is found, a Match signal is generated to set a memory storage cell (referred to as an age_cell) corresponding to the particular CAM location. When the age_array is read, the wordline associated with the age_cell is driven high. Upon developing a voltage separation between the data and data bar nodes of the age_cell, a sense amp senses the data value on the corresponding bit and bit bar lines coupled thereto. A suitable data out signal is generated for outputting the sensed data. Also, a reset control signal is generated to indicate that the read operation is substantially complete with respect to that age_cell. The reset control signal is applied to the age_cell to drive its data node to ground in order to store a binary 0 thereat. Accordingly, dedicated write cycles to reset the age_array for further monitoring of the CAM usage after the read cycles are no longer required.
A semiconductor memory circuit, comprising:
A semiconductor memory circuit, comprising:
A memory system, comprising:
A method of resetting a memory storage cell without a write cycle, comprising the steps of:
Dependencies are inferred from the claim text.