Efficient method for implementing programmable impedance output drivers and programmable input on die termination on a bi-directional data bus
US7646215B2 · kind B2 · utility
28Cited by
2References
19Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 24, 2008 |
| Grant date | Jan 12, 2010 |
| Priority date | — |
| Expiry date | Mar 24, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0278
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A combined input and termination circuit comprises a fixed portion of impedance and a programmable portion of impedance. The fixed portion is able to be fixed in a driver mode and a termination mode. The programmable portion is able to be configured to have a desired impedance in a driver mode or a termination mode while maintaining minimum associated capacitance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.