Data processing equipment and data processing method accessing multiple memories

Abstract

The invention provides data processing equipment and a data processing method, which receive multiple read requests sent to multiple external memory equipment by read engines in order and distribute data read from multiple external memory equipment to the read engines in order. The equipment comprises a tracking memory, a pointer controller and a data distributor, wherein the tracking memory memorizes the information of each read request according to the order of receiving the read requests and outputs the information of each read request in a first in first out mode; the pointer controller computes the write pointer of each read request; the write pointer of each read request is used for pointing the memory addresses of the data which respond to the read requests and are read from the corresponding external memory equipment in a data memory; and the data distributor reads the data in the data memory, distributes the data to the corresponding read engines according to the information of each read request output by the tracking memory and only can read and distribute the data corresponding to the read requests received later after reading and distributing the data corresponding to the read requests received earlier.

Description

technical field The present invention relates to a data processing device and a data processing method for controlling data read operations on a plurality of memories, and more particularly to a method for responding to a plurality of reads issued by one or more read engines to a plurality of memories respectively. A data processing device and a data processing method that read data from the plurality of memories upon request and provide the data to a corresponding read engine in a correct order. Background technique In the field of data access, such a scenario often occurs, that is, one or more read engines send read requests to multiple independent memories to read the data stored therein, where a read engine has only one read port and a Only one memory can be accessed, there is one access path between each read engine and each memory, and there is only one common access path between each read engine and the same memory. Operations performed in response to this read reque...

AI Technical Summary

Problems solved by technology

If the response time of the second storage is shorter than that of the first storage, the data returned from the second storage arrives at the read engine earlier than the data returned from the first storage, i.e., the data is returned in the same order as the data was requested Inconsistency, which makes the data received by the read engine not the requested data, resulting in an error

Also, if both memories return data to the read engine at the same time, a data collision occurs at the read port since the read engine has only one read port

In the case of multiple read engines, since there is only one common access path between each read engine and the same memory, the above-mentioned data out-of-sequence and data conflict problems will become more serious

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