Digital signal transfer between multiple voltage domains
US10355477B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2015 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Nov 12, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J1/082
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Circuitry and methods are provided that may be implemented to transfer digital signals between multiple voltage domains while some of these domains may be invalid, e.g., such as to transfer a digital signal from a source voltage domain to a destination voltage domain while the voltage of the source domain is zero or invalid. Possible implementations include, but are not limited to, for power selection and distribution in an integrated circuit chip that has multiple power sources (e.g., such as main power supply and a backup power supply), and in which at startup the chip is agnostic of (or is not aware of) which power supply or power supplies is actually powered and available.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.