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Altera_Forum's avatar
Altera_Forum
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9 years ago

banks sharing VCCPD pins

I am working on a Cyclone V project: part 5CSEBA5U23C8SN In addition to the HPS "ARM" core I am also creating a NIOS system with its own DRAM, DDR3L, 32 bits wide I decided to put the DRAM...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

Your understanding is correct - on both fronts.

I recommend, if you haven't already, running your project through Quartus and using the Pin Planner to try anything you're questioning. If you inadvertently put a 3.3V output into a bank powered at 2.5V, Quartus will reject it. However, it'll happily accept a 3.3V input into the same bank. Once through Quartus you can examine the .fit.rpt report file. The 'All Package Pins' table will tell you how Quartus is expecting every pin to be connected.

Cheers,

Alex