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Altera_Forum's avatar
Altera_Forum
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9 years ago

Cyclone III and 2xSDRAM

I need to open topic because I couldn't find answers anywhere so maybe someone can help. Card is designed around EP3C40F484C6N with 2 SDRAM chips IS42S16320B-6TL but they are connected on opposite...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

Yes that's something I was doing before but since SDRAM chips are placed on opposite sides of FPGA like you can see on the picture on first post so I was thinking that there is my problem. Then I decided to generate two PLL and tell quartus what PLL should use. Before situation was that quartus used only PLL4 and not PLL3 where 2nd SDRAM is connected.