Content addressable memory having prioritization of unoccupied entries
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 11, 2003
Grant Date -
N/A
app pub date -
Nov 16, 1999
filing date -
Nov 16, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
According to one embodiment, a content addressable memory (CAM) (100) can include a number of CAM entries (102-0 to 102-n) and corresponding status stores (106-0 and 106-n). Match indications from the CAM entries (102-0 to 102-n) and status information from status stores (106-0 and 106-n) can be supplied to a switching circuit (108). Status information can indicate if an entry stores valid or invalid data. In one mode of operation, the switching circuit (108) can provide match indication values on a number of switch outputs (SW0 to SWn). In another mode of operation, the switching circuit (108) can provide status information on a number of switch outputs (SW0 to SWn).
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