Arbitration in local system for access to memory in a distant subsystem
US6862640B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 15, 2002 |
| Grant date | Mar 1, 2005 |
| Priority date | — |
| Expiry date | May 5, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/1605
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A multiprocessor system includes a plurality of data processors. Each data processor includes: a data processing core; a memory forming a local portion of a unified memory; and a global memory arbitration logic. Each local portion of the unified memory is dual ported. The global memory arbitration logic arbitrates access to a first port among the corresponding data processing core and a close data processing core. The global memory arbitration logic arbitrates access to a second port of another data processor among data processing cores having a far connection to that local portion of unified memory. The dual port memory is preferably time multiplexed. The global memory arbitration logic grants a local peripheral bus priority access to both ports of the local portion of unified memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.