Multifunctional output drivers and multifunctional transmitters using the same
US7965121B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2008 |
| Grant date | Jun 21, 2011 |
| Priority date | — |
| Expiry date | Jan 2, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/028
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A multifunctional output driver capable of transmitting signals of different interfaces in different modes is provided, in which first and second current sources are provided, and first to fourth switching devices are coupled between the first and second current sources, and the first and second current source and the first to the fourth switching devices act as a current steering circuit. In a first transmission mode, the first and second switching devices are turned off, and the third and fourth switching devices and the first current source act as a current mode logic circuit to provide an output signal compatible with a first transmission interface according to an input signal from a pre-driver. In a second transmission mode, the current steering circuit outputs an output signal compatible with a second transmission interface according to the input signal from the pre-driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.