Apparatus and method for dynamic on-die termination in an open-drain bus architecture system
US6411122B1 · kind B1 · utility
58Cited by
5References
38Claims
0Family size
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Key dates
| Filing date | Oct 27, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Oct 27, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0278
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a system, such as an open-drain bus architecture system, a termination impedance can be dynamically coupled or de-coupled from a bus. The termination impedance is coupled to the bus by a dynamic control circuit if a signal is being received from the bus or if a binary 1 is driven on the bus. The termination impedance is de-coupled from the bus by the dynamic control circuit if a binary 0 is driven on the bus. Coupling the termination impedance to the bus improves signal quality by providing a matching impedance. De-coupling the termination impedance reduces power dissipation and improves receiver noise margin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.