SPI\doc\SPI协议V4-Freescale.pdf ...\...\SPI总线协议及SPI时序图详解.doc ...\...\SPI接口相关资料.pdf ...\rtl\rtl\spi_clgen.v ...\...\...\spi_defines.v ...\...\...\spi_shift.v ...\...\...\spi_top.v ...\...\...\timescale.v ...\...\spi.pdf ...\...\说明.txt ...\...\rtl ...\doc ...\rtl SPI