| 摘要 |
A control section controls a nonvolatile memory. A plurality of data terminals, and a command terminal are connected to a host, and transfer and receive data and a command to and from the host. A buffer memory temporarily stores the data. The control section outputs a filled state of the buffer memory to a first data terminal of the plural data terminals as a write busy signal indicating a write busy period by a block write command operation in which the number of blocks to be transferred is defined, receives a token issued by the block write command, and outputs the write busy signal indicating the write busy period to the first data terminal until an end of the token processing.
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