Generic buffer circuits and methods for out of band signaling
US7786762B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2009 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Mar 7, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4072
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Circuits and methods for a differential signal interface for coupling differential signals at a first frequency on a pair of opposite polarity signals to a multiple gigabit transceiver with generic buffers for receiving, transmitting or transceiving out of band signals at a second frequency lower than the first frequency are disclosed. Termination networks are provided coupling generic input buffers to respective ones of the pair of opposite polarity signals for receiving out of band signals where the opposite polarity signals are placed at voltages so that the differential voltage between them is below a threshold voltage. Methods for providing generic buffers with multiple gigabit transceivers for receiving and transmitting out of band signals on a differential signal interface are provided. Out of band signals are received when the out of band signaling protocol is not known.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.