Cache systems of memory systems and data caching methods of cache systems
AssigneeSK hynix Inc.
InventorsSeung Gyu JEONG, Dong Gun KIM
Life of this patent
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Abstract
A cache system includes a cache memory having a plurality of blocks, a dirty line list storing status information of a predetermined number of dirty lines among dirty lines in the plurality of blocks, and a cache controller controlling a data caching operation of the cache memory and providing statuses and variation of statuses of the dirty lines, according to the data caching operation, to the dirty line list. The cache controller performs a control operation to always store status information of a least-recently-used (LRU) dirty line into a predetermined storage location of the dirty line list.
Claims17
A cache system comprising:
- a cache memory configured to have a plurality of blocks;
- a dirty line list configured to store status information of a predetermined number of dirty lines among dirty lines in the plurality of blocks;
- and
- a cache controller configured to control a data caching operation of the cache memory and configured to provide statuses and variation of statuses of the dirty lines, according to the data caching operation, to the dirty line list,
- wherein the cache controller performs a control operation to always store status information of a least-recently-used (LRU) dirty line into a predetermined storage location of the dirty line list.
Dependencies are inferred from the claim text.