A method of improving the reading and writing rate of ddr memory

Abstract

In order to solve the problems of low reliability or low read-write efficiency in the read-write method when the DDR memory is used as a FIFO cache in the prior art, the present invention proposes a method for improving the read-write rate of the DDR memory. Encapsulate the original data before entering the data, and construct a data packet start identifier SOF at the head of the data packet, and construct a data packet end identifier EOF at the end of the data packet, and then write the data packets sequentially to the DDR in batches memory; when reading data in batches from the DDR memory, by searching the SOF in the data stream, find the starting position of the data packet that needs to be read, and locate the end position of the data packet that needs to be read by EOF; for the read data The packet is decapsulated to recover the original data frame. Effectively improve the reliability and effectiveness of DDR memory, improve management efficiency and memory utilization, and ensure the continuity and correctness of data reading and writing.

Description

technical field [0001] The present invention relates to a double data rate DDR memory reading and writing technology in a communication system, and in particular to a method for improving the reading and writing rate of a DDR memory when the DDR memory is used as a first-in-first-out FIFO (First In First Out, FIFO for short) cache method. Background technique [0002] Double data rate memory DDR (Double Data Rate, DDR for short) is widely used in the field of communication technology due to its excellent access speed. In the prior art, when the DDR memory is used as the first-in-first-out FIFO memory as the cache of the data transmission system, there are two main methods for reading and writing, one is to add a frame length field before each data frame, and then start from the beginning The data is sequentially written into the DDR memory at the starting address. When reading the data in the DDR memory, read sequentially from the start address, and extract the data of eac...

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Problems solved by technology

[0004] In order to solve the problems of low reliability or low read-write efficiency in the read-write method when the DDR memory is used as a FIFO cache in the prior art, the present invention proposes a method for improving the read-write rate of the DDR memory

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