| 摘要 |
According to one embodiment, a memory system, such as a SDIO card, includes a nonvolatile semiconductor memory device, a control section, a memory, an extended function section, and an extension register. The extended function section is controlled by the control section. A first command reads data from the extension register in units of given data lengths. A second command writes data to the extension register in units of given data lengths. A extension register includes a first area, and second area different from the first area, information configured to specify a type of the extended function and controllable driver, and address information indicating a place to which the extended function is assigned, the place being on the extension register, are recorded in the first area, and the second area includes the extended function. |
| 主权项 |
1. A memory device comprising:
a nonvolatile semiconductor memory device; and a control section configured to control the nonvolatile semiconductor memory device and an extension register space, the extension register space being capable of defining an interface controlling an extended function through an extended function section, wherein the extension register space stores information, the information is configured to specify a type of the extended function and a controllable driver, and to include address information indicating a place where an register for controlling the extended function is stored, the control section is arranged to process a first command to read data from the extension register space in accordance with designations of the address information and data length, and a second command to write data to the extension register space in accordance with designations of the address information and data length. |
