High speed signaling system with adaptive transmit pre-emphasis
US8183887B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2010 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Nov 25, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03802
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A high-speed signaling system with adaptive transmit pre-emphasis. A transmit circuit has a plurality of output drivers to output a first signal onto a signal path. A receive circuit is coupled to receive the first signal via the signal path and configured to generate an indication of whether the first signal exceeds a threshold level. A first threshold control circuit is coupled to receive the indication from the receive circuit and configured to adjust the threshold level according to whether the first signal exceeds the threshold level. A drive strength control circuit is coupled to receive the indication from the receive circuit and configured to adjust a drive strength of at least one output driver of the plurality of output drivers according to whether the first signal exceeds the threshold level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.