I2C isolated, bidirectional communication system with isolated domain current source pull-ups
US9256570B2 · kind B2 · utility
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5References
4Claims
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Key dates
| Filing date | Aug 5, 2011 |
| Grant date | Feb 9, 2016 |
| Priority date | — |
| Expiry date | Dec 30, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4045
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This disclosure describes a circuit implementation providing the functions necessary to implement an isolated I2C bidirectional port. The technique implements a current source as a pull up device on at least one side of the isolation system. The circuit manages and communicates bidirectional data across an isolation barrier. A method of communicating bidirectional signals and an I2C acknowledge (ACK) or clock stretching through an isolation channel is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.