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SD卡与SD卡控制器的关系
Only hosts that are compliant to the Physical Layer Specification Version 2.00 or later and the File
System Specification Ve r2.00 or higher can access High Capacity SD Memory Cards and Extended
Capacity SD Memory Cards. Other hosts fail to initialize High Capacity SD Memory Cards and
Extended Capacity SD Memory Cards.
Only hosts that are compliant to the Physical Layer Specification Version 3.00 or higher and the File
System Specification Ve r2.00 or higher can access High Capacity SD Memory Cards and Extended
Capacity SD Memory Cards. Other hosts fail to initialize High Capacity SD Memory Cards and
Extended Capacity SD Memory Cards.
Only hosts that are compliant to the Physical Layer Specification Version 3.00 or higher and the File
System Specification Ver3.00 or later (exFAT supported) can access Extended Capacity SD Memory.
与sd卡主的协议版本和sd卡的文件系统都有关系，以上是英文资料！！！
High Capacity SD Memory Card (SDHC) : More than 2GB and up to and including 32GB
Extended Capacity SD Memory Card (SDXC): More than 32GB and up to and including 2TB
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