Content addressable memory for microprocessor system
US5173872A · kind A · utility
25Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1987 |
| Grant date | Dec 22, 1992 |
| Priority date | — |
| Expiry date | Jul 13, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/145
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A content addressable memory (CAM) for use with a microprocessor allows comparison of the contents of the memory with input data. The CAM further allows certain bits of input data to be ignored from comparison. This feature allows certain bits, such as a bit indicating whether read or write access is allowed to certain information, to be ignored when the system is, for example, in a supervisory mode. Also disclosed is a method of precharging a hit line, which indicates whether or not a match was found in memory during the comparison, in order to increase the speed of the comparison process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.