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Honored Contributor
Honored ContributorSOPC with SDRAM Contoller
Hy everyone, I am new in building SOPC. Here is my objection : creating SOPC with SDRAM to write a simple Hello world on NIOS II by using DE0 development board. I got an error message from NI...
Altera_ForumHonored Contributor
Honored ContributorHi Yuyex,
You MUST connect the Nios2_system sdram pins!! Add input or output pins like you have done for clk and LED ports. You can even use the Quartus function which automatically creates port pins: select sopc block, right click and select Generate Pins for Symbol Ports. You must change another thing. Inside sopc builder, use the same CPU_clk for sdram, too. While SDRAM_clk will be only used externally to connect to the actual sdram chip clock pin. This SDRAM_clk will need a phase shift, in order to meet timing requirements: usually a 1.5ns phase lead relative to CPU_clk is good in most situations. Cris
