A method for checking and correcting the accuracy of memory data under ip multiplexing

Abstract

The invention discloses a method for checking and correcting the accuracy of memory data under IP multiplexing, belonging to the technical field of SoC. A switching bridge with error correction and detection function is inserted between the system bus and the memory controller to expand the data bit width of the memory controller and increase the parity bit; the switching bridge provides a storage space for the parity bit, and The data sharing address lines of the system bus. The invention takes the effective data width of the system bus and the data bit width of the storage unit as the comparison object, and also adds a data processing method in the case of an error in the read operation when the effective data of the system bus does not correspond to the bit width of the stored data, and increases the storage unit data. writeback operation.

Description

technical field [0001] The invention relates to the technical field of SoC, in particular to a method for checking and correcting 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 the design of very large-scale integrated circuits. SoC technology is based on IP reuse, which can reduce R&D costs and speed up the development cycle. IP reuse technology reuses IP to improve design capabilities, compress the gap between design and manufacture, and reduce design risk and cost by utilizing silicon-proven IP. [0003] In some areas, SoC products will enhance their reliability requirements due to the consideration of the working environment or the safety features of the product itself. For example, the inversion of single-bit data in the storage unit may have a certain impact on the software and hardware of the system. Generally, error de...

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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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