Multi-protocol driver slew rate calibration system for calibration slew rate control signal values
US8692600B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2013 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Jan 9, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/135
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Multi-protocol driver slew rate calibration systems for calibrating slew rate control signal values are provided. Embodiments include generating, by a first phase rotator, a first clock signal; generating, by the second phase rotator, a second clock signal; initially setting, by a calibration controller, phase selector amounts such that the first clock signal is delayed relative to the second clock signal; determining whether the first clock signal is delayed relative to the second clock signal; if the first clock signal is delayed, changing the second phase selector amount; and if the first clock signal is not delayed, using the first clock signal and the second clock signal to calibrate values of control signals provided to control a slew rate of a calibration clock delay line such that the slew rate of the calibration clock delay line substantially matches a target slew rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.