Block programmable priority encoder in a CAM

Details Block programmable priority encoder in a CAM Block programmable priority encoder in a CAM

2007-03-06

2007-03-06

McLean-Mayo, Kimberly (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S158000, C365S200000, C365S049130, C365S236000

Reexamination Certificate

active

10724576

ABSTRACT:
A priority encoder (PE) for a CAM, comprising a plurality of PE blocks, each receiving a plurality of match results corresponding to data entries in a corresponding data array block and, for determining an address of a highest priority data entry based on a physical location in the data array block during a CAM search-and-compare operation a register for storing a user defined priority value assigned to each PE block and means for evaluating priority values and the address determined by the plurality of PE blocks to select a PE block having the highest priority data entry.

REFERENCES:
patent: 6687785 (2004-02-01), Pereira
patent: 6700809 (2004-03-01), Ng et al.
patent: 2003/0016575 (2003-01-01), Regev
patent: 2004/0128440 (2004-07-01), Regev et al.

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