- 专利标题: COALESCING READ COMMANDS BY LOCATION FROM A HOST QUEUE
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申请号: US17492918申请日: 2021-10-04
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公开(公告)号: US20220129378A1公开(公告)日: 2022-04-28
- 发明人: Charles McJilton , Jeffrey Pream , Jonathan Henze , Indrajit Zagade
- 申请人: Seagate Technology LLC
- 申请人地址: US CA Fremont
- 专利权人: Seagate Technology LLC
- 当前专利权人: Seagate Technology LLC
- 当前专利权人地址: US CA Fremont
- 主分类号: G06F12/02
- IPC分类号: G06F12/02
摘要:
Method and apparatus for managing data in a storage device, such as a solid-state drive (SSD). A non-volatile memory (NVM) is arranged into multiple garbage collection units (GCUs) each separately erasable and allocatable as a unit. Read circuitry applies read voltages to memory cells in the GCUs to sense a programmed state of the memory cells. Calibration circuitry groups different memory cells from different GCUs into calibration groups that share a selected set of read voltages. A read command queue accumulates pending read commands to transfer data from the NVM to a local read buffer. Read command coalescing circuitry coalesces selected read commands from the queue into a combined command for execution as a single batch command. The combined batch command may include read voltages for use in retrieval of the requested data.