Interconnect controller for a data processing device with transaction tag locking and method therefor
US9195625B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2009 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Feb 5, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F15/76
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data processing device includes an interconnect controller operable to manage the communication of information between modules of the data processing device via an interconnect. In response to a transaction request the interconnect controller selects a tag value from a set of available tag values, assigns the tag to the transaction and reserves the tag value so that it is unavailable for assignment to other transactions. If an expected response to the transaction request is not received within a designated amount of time, the transaction enters a timed-out state and the interconnect controller locks the tag value, so that it remains unavailable for assignment to other transactions until an unlock event, such as a request from software.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.