Method for detecting and correcting memory data accuracy under IP multiplexing

Abstract

The invention discloses a method for detecting and correcting memory data accuracy under IP multiplexing, and belongs to the technical field of SoC. An adapter bridge with an error correction and detection function is inserted between a system bus and a memory controller and is used for expanding the data bit width of the memory controller and increasing check bits; and a transfer bridge providesa storage space of a check bit and shares an address line with data of a system bus. the effective data width of the system bus and the data bit width of the storage unit are taken as comparison objects, a data processing method under the condition of read operation errors when the effective data of the system bus does not correspond to the data bit width of a storage unit is added, and write-backoperation of the data of the storage unit is added.

Description

Technical field [0001] The present invention relates to the technical field of SoC, in particular to a method for checking the accuracy of memory data under IP multiplexing. Background technique [0002] With the development of integrated circuits, SoC technology has become a design method and means commonly used in VLSI design. SoC technology is based on IP reuse, which can reduce R&D costs and speed up the development cycle. IP multiplexing technology reuses IP to improve design capabilities, reduces the gap between design and manufacturing, and uses silicon-proven IP to reduce design risks and costs. [0003] In some areas, SoC products will enhance their reliability requirements due to considerations of the working environment or product safety features. For example, the flip of a single bit of data in a storage unit may have a certain impact on system software and hardware. Generally, memory units in many CPU cores integrate error detection and correction logic to reduce sy...

AI Technical Summary

Problems solved by technology

However, when the read data verification error occurs, it fails to provide a write-back function, cannot guarantee data consistency, and verification errors will still occur when reading data again

On the other hand, its method of processing data streams is based on the bit width supported by the ECC basic protection unit. When the data width of the peripheral is smaller than the bit width supported by the ECC basic protection unit, the flexibility is reduced. In the processing of different storage spaces, The configurability it provides is relatively insufficient

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