Cache controller and method

专利名称：Cache controller and method

发明人：Frederic Claude Piry,Philippe Jean-Pierre

Raphalen,Gilles Eric Grandou

申请号：US11264374申请日：20051102

公开号：US20070101064A1公开日：20070503

专利附图：

摘要：There is disclosed a method, a cache controller and a data processing apparatusfor allocating a data value to a cache way. The method comprises the steps of: (i)receiving a request to allocate the data value to an ‘n’-way set associative cache in

which the data value may be allocated to a corresponding cache line of any one of the‘n’-ways, where ‘n’ is an integer greater than 1; (ii) reviewing attribute informationindicating whether the corresponding cache line of any of the ‘n’-ways is clean; and (iii)utilising the attribute information when executing a way allocation algorithm to providean increased probability that the data value is allocated to a clean corresponding cacheline. By allocating data value to the corresponding clean cache line there is no need toevict any data values prior to the allocation occurring, this obviates the need to powerthe eviction infrastructure and reduces eviction traffic over any interconnect. It will beappreciated that this can significantly reduce power consumption and improve theperformance of the system.

申请人：Frederic Claude Piry,Philippe Jean-Pierre Raphalen,Gilles Eric Grandou

地址：Fleuris FR,Valbonne FR,Plascassier FR

国籍：FR,FR,FR

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