全面透析SD卡与FAT相关资料 包括：4.5万字透视FAT32系统；SD存取介质；SD卡的SPI模式（中文）；CSD寄存器解析；基于SPI协议的SD卡读写-FAT SD card with full dialysis-related information, including: 4.5 million characters perspective FAT32 system SD access to media SD card SPI mode (in Chinese) CSD re