压缩包中含有SD卡的原理图符号及PCB封装，一切是基于protel 99se环境的，另外还有SPI模式的参考接线图。-Compressed SD card contains schematic symbols and PCB packaging, everything is based on the protel 99se environment, in addition to wiring diagram for reference SPI mode.

MicroSD卡(SDIO模式)测试实验，采用4bit数据线模式。没 有跑文件系统，只是单纯地读block并将测试信息通过串口 1在电脑的超级终端上 打印出来。-MicroSD card (SDIO mode) test experiment, using the bit 4 cable model.no Have to run the file system, will simply read block and test information via a serial port

verilog SPI模式下实现SD卡读写-SD card reader to achieve under verilog SPI mode

SD卡的SPI模式verilog代码，外加modelsim仿真结果。(SD card's SPI mode Verilog code, plus the simulation results of modelsim.)