公开(公告)号：US20180173619A1

公开(公告)日：2018-06-21

申请号：US15491917

申请日：2017-04-19

申请人： SanDisk Technologies LLC

发明人： Vijay Sivasankaran ,  Srinivasa Rao Sabbineni ,  Saugata Das ,  Indraneel Mukherjee ,  Nitin Gupta

IPC分类号： G06F12/02 ,  G06F3/06

CPC分类号： G06F12/0246 ,  G06F3/061 ,  G06F3/0631 ,  G06F3/0659 ,  G06F3/0679 ,  G06F2212/1016 ,  G06F2212/7201 ,  G06F2212/7205

摘要： In a storage device having a storage controller and multiple memory channels, each memory channel has a memory channel controller. The storage controller, in response to a host command to perform a respective read operation at a logical address specified by the host command, identifies the memory channel based on the specified logical address, and also identifies a portion of logical to physical address mapping information corresponding to the logical address. The storage controller sends to a controller of the identified memory channel a read command that includes information identifying the portion of logical to physical address mapping information corresponding to the logical address. Using that information, the memory channel controller translates the logical address into a physical address and reads data from the physical address.