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Altera_Forum's avatar
Altera_Forum
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19 years ago

"Power Pair" in Cyclone II

In Cyclone II the concept of "power pair" is referred to. Does this mean a VCC/GND pair, or something else? How is a power pair determined as belonging to a group of consecutive I/Os?

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    19 years ago

    The power pair does mean VCC/GND pair. The group of consecutive I/Os apply to the pad numbers. The VCC applies to the VCCIO only because the DC guideline is for the buffer.

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    19 years ago

    Wiz - can you point us to the document you are referring to? It might help get you the answer you're looking for.