Transmitter equalization method and circuit using unit-size and fractional-size subdrivers in output driver for high-speed serial interface
US8497707B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2011 |
| Grant date | Jul 30, 2013 |
| Priority date | — |
| Expiry date | Sep 7, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03343
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method is provided for controlling a data transmission device that includes at least one fractional-sized subdriver. The method includes enabling at least one subdriver and driving a differential signal pair output. Also provided is a device with an output driver having a plurality of subdrivers where at least one subdriver is fractional-sized. The device also includes a de-emphasis portion configured to enable and disable the subdrivers. The device is configured to drive an output data signal. Also provided is a computer readable storage device encoded with data for adapting a manufacturing facility to create an apparatus such as the device. Also provided is an apparatus that includes an output driver with at least one fractional-sized subdriver and a de-emphasis portion configured to enable and disable the subdrivers of the output driver. The output driver is configured to drive a differential output data signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.