| 摘要 |
<p>Provided is an SD card, comprising an SDIO interface, a selection switch, a memory cell, a baseband processing unit, a radio-frequency circuit and an antenna, wherein the SDIO interface is used for providing a data and control interface between a host and the memory cell; the memory cell is used for storing data; the selection switch comprises a first branch and a second branch, a read/write interface of the memory cell is coupled to the SDIO interface when the selection switch switches on the first branch, and the read/write interface is coupled to the baseband processor when the selection switch switches on the second branch; the baseband processor is coupled to the radio-frequency circuit for processing baseband data; the radio-frequency circuit is coupled to the baseband processor; and the antenna is used for sending radio-frequency signals output by the radio-frequency circuit and receiving radio-frequency signals from networks.</p> |
