Intelligent SAS phy power management
US10635154B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2016 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Jul 4, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure generally relates to a method for intelligent device initiated SAS Phy PM. Using device internal phy characteristics and future phy usage queue, the device determines optimal SAS Phy PM usage based on a predetermined configuration preference of power versus performance. The device achieves optimal SAS Phy PM Usage by implementing a state machine to manage phy PM states and transitions between the PM states. The device state machine includes capabilities to proactively initiate transitions to partial or slumber PM states, start early wake-up from partial or slumber PM states to mask the associated latency impacts of exiting partial or slumber PM states, and selectively reject host requests to enter a partial or slumber PM state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.