Multi-chip addressing for the I2C bus
US6629172B1 · kind B1 · utility
63Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1999 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Dec 13, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2213/0052
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention is a system for assigning unique addresses to multiple devices attached to an I2C bus. When multiple devices share the same I2C address, the master device is unable to communicate with each device individually. Therefore, a circuit enable input is created to individually activate each device. Once a device is activated, the master device may communicate to the device a unique I2C bus address, after which the activated device only responds to the new address. Each device initially sharing the same address is activated individually until all devices have been assigned a unique address.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.