Data reading and writing method of FIFO (First Input First Output) data cache and data cache thereof

Abstract

The embodiment of the invention provides a data reading and writing method of an FIFO (First Input First Output) data cache and the data cache, relates to the field of computers and solves the problem that the existing FIFO data cache cannot achieve an M-input and N-output data reading manner. The data reading and writing method of the FIFO data cache comprises the following steps: obtaining first to-be-written data with data bit-width of M-bit when the FIFO data cache is in a writing state, caching the first to-be-written data in a data caching area of the FIFO data cache, splitting the first to-be-written data into M 1-bit data blocks, and successively storing the M 1-bit data blocks in first M storage units of the FIFO data cache. The data reading and writing method is applied to the FIFO data cache.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a data reading and writing method of a first-in-first-out FIFO data buffer and the data buffer. Background technique [0002] At present, in the current ASIC (English: Application Specific Integrated Circuit, Chinese: Application Specific Integrated Circuit) design, it is usually done by setting an appropriate number of FIFO (English: First Input First Output, Chinese: First In First Out) data buffers. Data caching, to prevent data loss or handle data failures. The FIFO data buffer is a first-in first-out data buffer, and the data that enters first is read out from the FIFO data buffer first. Specifically, the existing FIFO data buffer includes a plurality of storage units, and the data bit width stored in each storage unit is equal and is the smallest unit of the FIFO data buffer. Therefore, the existing FIFO data buffer is performing data writing When entering and reading...

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a data reading and writing method of a FIFO data buffer and a data buffer, which solves the problem that the existing FIFO data buffer cannot realize the data reading mode of M in and N out

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