ssd master control buffer, ssd master control and ssd unaligned write data transmission control method
A data transmission and data writing technology, which is applied in the direction of electrical digital data processing, instruments, etc., can solve the problem of occupying too much CPU time resources, achieve the effect of improving capacity, reducing invalid waiting time, and saving CPU time resources
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[0044] The present invention scheme such as image 3 shown. The biggest difference between it and the prior art is that there are two more hardware modules, WD flag and RD flag.
[0045] WD Flag (Write DMA Flag) definition: According to the SSD front-end protocol, SSD transmission data must be sector-aligned, and the size of each sector is 512 bytes. Therefore, in this solution, it is stipulated that each sector space in the Buffer has its own 1-bit information corresponding to it in the WD Flag. The WD Flag of a certain sector space is 0, indicating that the Write DMA can write the sector space; if its WD Flash is set to 1, it indicates that the sector space is filled by the Write DMA or reserves space for the Read DMA to write data.
[0046] RD Flag (Read DMA Flag) definition: According to the SSD front-end protocol, SSD transmission data must be sector-aligned, and the size of each sector is 512 bytes. Therefore, in this solution, it is stipulated that each sector space ...
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