Host accelerated operations in managed nand devices
AssigneeMicron Technology, Inc.
InventorsSebastien Andre Jean, Greg A. Blodgett
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Abstract
Devices and techniques for host accelerated operations in managed NAND devices are described herein. A host logical-to-physical (L2P) table of the NAND device has an associated map. Entries in the map correspond to one or more logical addresses (LA) and indicate whether the host L2P table is current for those LAs. If the table is not current, then a request will bypass the host L2P table, using a standard device L2P lookup instead. Otherwise, the host L2P table can be used.
Claims21
A NAND device for host accelerated operations in managed NAND devices, the NAND device comprising:
- a NAND array;
- and
- a controller to:
- receive a request, the request including a logical address and a physical address to the NAND array;
- retrieve a host logical-to-physical (L2P) table map;
- retrieve an entry in the host L2P table map corresponding to the logical address;
- retrieve a second physical address from a NAND device L2P table in response to the entry indicating that the host L2P table is not current;
- and
- complete the request from the NAND array using the second physical address.
A method for host accelerated operations in managed NAND devices, the method comprising:
- receiving a request at a controller of a NAND device, the request including a logical address and a physical address;
- retrieving a host logical-to-physical (L2P) table map;
- retrieving an entry in the host L2P table map corresponding to the logical address;
- retrieving a second physical address from a NAND device L2P table in response to the entry indicating that the host L2P table is not current;
- and
- completing the request using the second physical address.
A system for host accelerated operations in managed NAND devices, the system comprising:
- means for receiving a request at a controller of a NAND device, the request including a logical address and a physical address;
- means for retrieving a host logical-to-physical (L2P) table map;
- means for retrieving an entry in the host L2P table map corresponding to the logical address;
- means for retrieving a second physical address from a NAND device L2P table in response to the entry indicating that the host L2P table is not current;
- and
- means for completing the request using the second physical address.
Dependencies are inferred from the claim text.