Storage device with read-write conflict prevention function

Abstract

The invention discloses a storage device with a read-write conflict prevention function. The device comprises an interface module and a storage module, the interface module comprises two independent ports. The two ports share the storage module; the storage device further comprises a configuration module and an arbitration module. The storage module comprises a plurality of storage partitions; each storage partition is independently configured with a base address, a capacity and an attribute; the configuration module is connected with an external host; the external host configures base addresses, capacities and attributes of the storage partitions through the configuration modules, and the arbitration module performs arbitration to gate a read operation or write operation according to thepartition attributes when two ports perform read-write operation on the same partition at the same time based on the partitions of the storage module and the attribute configuration of the partitions.The read-write priority is judged through the arbitration module, parallel operation of the dual-port memory is supported, the access speed of the memory is increased, and influence of read-write conflict on system operation is eliminated.

Description

technical field [0001] The invention relates to a storage device, in particular to a storage device with a self-contained anti-read-write conflict function, belonging to the technical field of storage devices. Background technique [0002] With the development of electronic technology, the complexity of the system is getting higher and higher, the amount of information processed is increasing, and the requirements for the working speed and capacity of the memory are also higher and higher. At present, the main solution to speed up the memory access speed is to use a higher-speed memory, or to increase the word length of the memory, and to use a dual-port memory that operates in parallel. A dual-port memory operating in parallel has two completely independent ports, each with its own data, address, and control lines. When the addresses of the dual ports are different, read and write operations are performed on the two ports at the same time, and there will be no read and wri...

AI Technical Summary

Problems solved by technology

This situation will cause unpredictability of the read and write behavior of the storage unit, because at the same time as the read operation, other ports have write operations to the same address space, resulting in the inability to determine the correctness of the read data

At present, solving the problem of read-write conflicts in multi-port storage mostly depends on the avoidance of the same address space for read and write operations in the system design, which limits the operation of the system. However, the existing methods relying on internal logic design to avoid read-write conflicts will Reduce read and write performance, and only support MEMORY bus

Images