Dual-port memory circuit based on nandflash

Abstract

The invention discloses a Nandflash-based dual-port memory circuit which comprises a first port instruction queue module, a second port instruction queue module, a first port DMA (direct memory access) controller, a second port DMA controller, a Nandflash memory array, an instruction execution control logic module and a Nandflash interface controller, wherein the instruction execution control logic module is used for arbitrating and controlling the operation of the first port instruction queue module and the second port instruction queue module, and arbitrating and controlling the operation of the first port DMA controller and the second port DMA controller; and the Nandflash interface controller is used for controlling the data transmission with the Nandflash memory array, and controlling the control logic of the instruction execution control logic module. According to the Nandflash-based dual-port memory circuit, a Nandflash memory is provided with two ports through the time division multiplexing of the Nandflash interface, therefore, the memory system can perform read-write operation on the two ports simultaneously, and the application range of the Nandflash memory is expanded.

Description

technical field [0001] The invention relates to a Nandflash (NAND flash memory) memory circuit, in particular to a Nandflash-based dual-port memory circuit. Background technique [0002] Nandflash has developed by leaps and bounds in recent years, from SLC (1 bit / unit) technology to MLC (multiple bits / unit) technology, and the production process of Nandflash is also constantly improving. With the development of technology, the capacity of Nandflash is continuously increasing, the cost per unit capacity is also greatly reduced, and there are more and more fields where Nandflash is applied. [0003] With the development of Nandflash technology, the application of Nandflash is becoming more and more complex. The single-port feature of Nandflash increases the limitations of its use in complex environments. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a dual-port memory circuit based on Nandflash, the storage syst...

AI Technical Summary

Problems solved by technology

[0003] With the development of Nandflash technology, the application of Nandflash is becoming more and more complex. The single-port feature of Nandflash increases the limitations of its use in complex environments.

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