sdram_controller_latest.tar.gz -it is memory DDR controller, but it has 8 bit only data bus wide ,and hasn’t independents clock for source read-write data and ddr + controller size. Wrote on the VHDL language.-sdram_controller_latest.tar.gz -it is memory DDR controller, but it has 8 bit only data bus wide ,and hasn’t　independents clock for source read-write data and ddr + controller size. Wrote on the VHDL language.