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Altera_Forum
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8 years ago

VREFB1N0 and VREFB1N1 on a Cyclone IV E

Hello all, Just starting on a Cyclone IV E hardware design, and slowly making my way around all of the pins to ensure I have some idea what is going on. Bumped into pins VREFB1N0 and VREFB...
Altera_Forum's avatar
Altera_Forum
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8 years ago

Nothing absolute in this answer - only Altera might be able to offer that...

It's possible that the two pins, that you must supply with the same voltage, feed different parts of the device. This could be due to device fabrication constraints - perhaps a lack of available resource on a metalization layer.

There's clearly no need for any reasons of current sharing...

Whatever the reason you're not going to find anything in the documentation. All you can do is connect it up as required.

Cheers,

Alex