Storage device
AssigneeKioxia Corporation
InventorsAkihiro Sakata, Tomonori Yokoyama
Life of this patent
Estimating the term…
Abstract
A storage device includes a memory, a write circuit, a read circuit, and a debug information register. The memory includes a data area and a redundant area that corresponds to the data area. The write circuit writes first data specified in a write command to the data area, and first information about a transmission source which has transmitted the write command, to the redundant area. The read circuit reads the first data as second data from the data area, and reads the first information as second information from the redundant area, in response to a read command. The debug information register stores the second information read by the read circuit.
Claims20
A storage device comprising:
- a memory that includes a data area and a redundant area that corresponds to the data area;
- a write circuit configured to write first data specified in a write command to the data area, and write first information about a transmission source which has transmitted the write command, to the redundant area;
- a read circuit configured to read the first data as second data from the data area, and read the first information as second information from the redundant area, in response to a read command;
- and
- a first storage circuit configured to store the second information read by the read circuit.
A storage device comprising:
- a memory that includes a data area and a redundant area that corresponds to the data area;
- a write circuit configured to write first data specified in a write command to the data area, and write first information about a transmission source which has transmitted the write command, to the redundant area;
- a read circuit configured to read the first data as second data from the data area in response to a read command;
- a first storage circuit configured to store an address of the redundant area;
- a selection circuit configured to select the redundant area based on the address stored in the first storage circuit, and output the first information as second information stored in the redundant area;
- and
- a second storage circuit configured to store the second information output by the selection circuit.
A method of operating a storage device in a normal mode of operation and a debug mode of operation, wherein the storage device includes a memory that includes a data area and a redundant area that corresponds to the data area, said method comprising:
- while operating in the debug mode of operation, writing first data specified in a write command to the data area, and first information about a transmission source which has transmitted the write command, to the redundant area;
- and
- while operating in the debug mode of operation, reading the first data as second data from the data area, and the first information as second information from the redundant area, in response to a read command, and storing the second information read in a first storage circuit of the storage device.
Dependencies are inferred from the claim text.