Method and apparatus for providing a bus interface with power management features
US7805621B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2006 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Jun 10, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/50
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for providing a bus interface are disclosed. An example method for providing a bus interface includes operating first circuitry using a first power supply voltage in a normal operating mode, where the first circuitry includes at least a portion of datapath circuitry of the bus interface. The example method further includes powering down the first circuitry in a low power operating mode and operating second circuitry using the first power supply voltage in the normal operating mode. The example method also includes operating the second circuitry using a second power supply voltage in the low power operating mode. The second circuitry includes a power management control circuit adapted to receive a power management event indication signal. Responsive to the power management event indication signal, the control circuit provides at least one of an in-band power management indication and an out-of-band power management indication to one or more devices in a computing system. In the example method, the first and second power supply voltages may be provided by a single power supply or, alternatively, by multiple power supplies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.