Content addressable memory-encoded crossbar array in dot product engines
US10930348B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2019 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Aug 13, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2213/79
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A reprogrammable dot product engine ternary content addressable memory (DPE-TCAM) is provided. The DPE-TCAM comprises a TCAM crossbar array comprising a plurality of match lines and a plurality of search lines. Each search line and match line are coupled together by a memory cell. A plurality of search line drivers are configured to apply a voltage signal to the search lines representing bits of a search word. Current sensing circuitry is coupled to the output of the plurality of match lines and configured to sense a current on the match lines, the sensed current indicating whether the search word and a stored word matched and, if not, the degree of mismatch between the two words.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.