Freeing a serial bus hang condition by utilizing distributed hang timers
US7900096B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2009 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | Aug 28, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/0793
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for automatically detecting and correcting one or more hang conditions within one or more of a master device and target device of a serial bus interface when one or more signals are held in an invalid state. A hang timer monitors one or more operations of the serial bus when the serial bus is participating in a serial bus transfer. If the transfer does not end before the bus timeout value has been exceeded, the hang timer will issue a reset to the state machine forcing the state machine back to an idle state. The hang timer will also disable the serial bus drivers of the state machine, whereby the hang condition is corrected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.