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Altera_Forum's avatar
Altera_Forum
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10 years ago

Why do the number of VCCIO and GNDIO pairs more than number of banks in a device?

I assumed that there is a VCCIO for each bank. However, it seems that a single bank can have multiple VCCIO and GNDIO connections. As far I understand a single bank shall have a single IO voltage ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Each bank may, and usually does, have multiple VCCIO pins. This reduces the impedance onto the die. All VCCIO pins, for a particular bank, are clearly identified and must connect to the same power net.

Cheers,

Alex