Chip for pre-caching external memory data and operation method thereof

Abstract

The invention discloses a chip for pre-caching external memory data and an operation method thereof. The chip comprises a decoding switching module and a cache unit; the decoding switching module is internally configured with a batch of pre-cache addresses and is used for realizing address decoding and bus switching functions of the chip, reading data stored on the pre-cache addresses from an external memory according to the pre-cache addresses and transmitting the pre-cache addresses and the data stored on the pre-cache addresses to the cache unit; and the cache unit is used for receiving the pre-cache address and the data transmitted by the decoding switching module, and caching the pre-cache address and the data stored on the pre-cache address according to a preset cache format. According to the chip, the problem of long waiting time of calling data from the external memory by the chip is solved, and by pre-caching part of addresses and data in the external memory, the chip can call the data of the external memory in the chip, so that the running efficiency of the chip is greatly improved.

Description

technical field [0001] The invention relates to the field of integrated circuits, in particular to a chip for pre-caching external memory data and an operating method thereof. Background technique [0002] The internal memory in the chip is usually used to store the program written by the user, but in some applications, the user needs to write a large program code or use a large array table, so that the internal memory cannot meet the user's needs. Therefore, the user stores the program or the array table in the external memory for the chip to read. External memory, also known as auxiliary memory, is widely used in data storage due to its advantages of large capacity, low price and no loss of data when the system is powered off. The chip realizes chip memory expansion by reading the data on the external memory, but the chip needs to send read and write commands to read data from the external memory, and the next read and write command can only be executed after a read and w...

AI Technical Summary

Problems solved by technology

The chip realizes chip memory expansion by reading the data on the external memory, but the chip needs to send read and write commands to read data from the external memory, and the next read and write command can only be executed after a read and write command is completed. When reading a large amount of data in the memory, limited by the interface speed, it takes a long time to complete the data reading, so that the external memory cannot be fully utilized

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