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Altera_Forum's avatar
Altera_Forum
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15 years ago

default voltage for the cyclone 3 why is 2.5

when i consult the cyclone 3 datasheet,the VCCIO for c-3 is 3.3V,but when set the pin planner in QUARTUSII or the menu of assignment->device/ device and pin options/voltage tab:default I/O standard i...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

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Quartus checks the consistency of IO assignments in each bank, e.g. a Bank using LVDS IOs must use exclusively a VCCIO of 2.5V.

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so ,ONE FPGA chip would still work when we keep each bank the same voltage though different from each bank? as a matter of fact ,didn't meet this situation before.it is so incredible if do this.thanks