Current mode driver with variable termination
US6639423B2 · kind B2 · utility
42Cited by
3References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2002 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | Mar 12, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/0005
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A simultaneous bidirectional port circuit includes a current mode output driver for driving an output node and a current mode return driver for driving a differential receiver. Variable impedance termination devices are included to provide terminations for both the current mode output driver and current mode return driver. A control circuit and method set the impedance value of the variable impedance termination devices by comparing voltage values at the output of the current mode output driver and current mode return driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.