Performing lookup operations using associative memories optionally including selectively determining which associative memory blocks to use in identifying a result and possibly propagating error indications
US7065609B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2002 |
| Grant date | Jun 20, 2006 |
| Priority date | — |
| Expiry date | Jun 4, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/90339
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus are disclosed for performing lookup operations using associative memories, including, but not limited to modifying search keys within an associative memory based on modification mappings, forcing a no hit condition in response to a highest priority matching entry including a force no hit indication, selecting among various blocks or sets of associative memory entries in determining a lookup result, and detecting and propagating error conditions. In one implementation, indications of which associative memory blocks to use and/or enable in a particular lookup operation are retrieved from one or more memories, such as that based on received a profile ID. In one implementation, which may or may not be in a cascaded configuration, one or more identified or received error conditions are propagated in such a manner as to identify a source of each error condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.