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Altera_Forum's avatar
Altera_Forum
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18 years ago

Difference between VCCIO and VREF?

hi,everyone. i just start to use fpga cycloneIII,and i have a question which may be easy to answer. Thank you. question :is it right that VCCIO just supply the power?for example,if i want...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

The VREF pins aren't used with LVDS. They are only used with some fast single-ended iI/O standards, such as SSTL.

You can use those pins as regular I/O.