ECC-compare path of cache directory logic improvements
US5822338A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1998 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Jan 28, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1064
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Directory compare and ECC logic which is interfaced with the array's static and dynamic outputs for the ECC-compare path of a cache directory, using a three-output array providing a static output and a pair of complementary dynamic outputs. The static output is useed by the compare logic for a directory compare. The pair of complementary dynamic outputs provide dynamic signals (t and f) to drive the ECC logic only as ECC logic complementary signals which are coupled to drive a DCVS (Dynamic Cascode Voltage Switch) syndrome generator circuit. The static output signal performs compare-then-correct processing. The dynamic signals of each bit emanating from array are ECC checked but the static signal is not. The static signal is consistent with the t dynamic signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.