Flash based PCIE (peripheral component interface express) board for data storage
A data storage and card technology, applied in the field of memory and Flash-based storage devices, can solve the problems of limited service life, high cost, asymmetric read and write speed, etc., achieve high data transmission rate, prevent data loss, and ensure continuity correctness effect
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[0078] exist image 3 Among them, firstly, the command interpretation module is responsible for analyzing the access request sent by the master device, including access type, logical address, data block size, etc., and then sends it to the control management unit. The control management unit is the core component of the PCIE board. It first needs to search and judge the hit status of the target block in the local memory according to the logical address. If it finds a hit, it returns the content of the data block directly. Otherwise, it sends the logical address to the address mapping unit and waits for the physical address to be obtained. Afterwards, the parsed access command is packaged and sent to the flash parallel access unit. Here, the address mapping unit continuously receives memory access requests from the control management unit, and also judges whether the latest copy of the address mapping page table is located in the local memory. If it misses, it also needs to ret...
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