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发明公开
CN109144886A 数据储存装置 有权

数据储存装置
摘要：
本发明涉及一种数据储存装置，包括快闪存储器以及快闪存储器控制器，操作该快闪存储器以储存数据，并储存映射表以记录多个逻辑地址与快闪存储器的多个物理地址的映射资讯，并且将映射表区分为多个群组；其中，部份群组划分为第一类空间修整群组，第一类空间修整群组的每一群组所记录的部份逻辑地址包含于空间修整指令，快闪存储器控制器对第一类空间修整群组进行空间修整。
摘要（英）：

A data storage device includes a flash memory and a flash memory controller. The flash memory controller operates the flash memory to store data, and stores a mapping table to record the mapping information between a plurality of logical addresses and a plurality of physical addresses of the flash memory. The mapping table is divided into a plurality of groups. Some of the groups are categorized into a first type of trim group and some of the logical addresses of each of the groups of the first type of trim group are included in a trim command. The flash memory controller performs the trim onthe groups of the first type of trim group.

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