sd_rd_state.vhd

SD卡读卡器模块的VHDL及软件驱动代码

package sd_rd_state is
	type SD_RD_STAT is
	(
		SD_RD_INIT,
		SD_RD_IDLE,	-- idle
		SD_RD_WRSTATE,	-- write state
		SD_RD_WR_RDADDR_LO,	-- write read address low 16 bits
		SD_RD_WR_RDADDR_HI,	-- write read address high 16 bits
		SD_RD_RDSTATE,	-- read state
		SD_RD_WAITDATA, -- wait data ready
		SD_RD_FIFO -- read data
	);
end sd_rd_state;