CACHE MEMORY SYSTEM AND METHOD OF OPERATING THE SAME

摘要

A cache memory system and a method of operating the cache memory system are provided. The cache memory system includes: an address buffer for receiving address bits including a cache address and a tag address from the outside or externally; a cache memory including a memory array, the cache memory outputting, from a row of the memory array which the cache address designates, a plurality of pieces of tag data and a plurality of pieces of cache data corresponding to the plurality of pieces of tag data; and a register configured to temporarily store a data set including the plurality of pieces of cache data output from the cache memory.

主权项

1. A cache memory system, comprising:
an address buffer for externally receiving address bits including a cache address and a tag address; a cache memory comprising a memory array, the cache memory outputting, from a row of the memory array which the cache address designates, a plurality of pieces of tag data and a plurality of pieces of cache data respectively corresponding to the plurality of pieces of tag data; a register configured to temporarily store a data set comprising the plurality of pieces of cache data output from the cache memory; and a controller configured to compare the tag address of the address buffer with the plurality of pieces of tag data to produce a comparison result and to receive new data from a region of a main memory which the tag address designates, according to the comparison result, wherein the controller replaces any one of the temporarily stored plurality of pieces of cache data with the new data to update the data set to produce an updated data set.