Methods and systems for averaging impedance calibration
US9935632B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 2017 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Jul 19, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2207/2254
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor device includes a power management integrated circuit that supplies a periodic supply voltage signal. The semiconductor device also includes programmable termination components and a calibration circuit. The calibration circuit generates impedance calibration codes associated with a period of the periodic supply voltage signal. The calibration circuit also calibrates impedance of the programmable termination components based on an average impedance calibration code of the impedance calibration codes. The semiconductor device further includes an averaging circuit that determines the average impedance calibration code of the impedance calibration codes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.