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Altera_Forum
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17 years ago

DFF Clock Polarity & Other signal polarities

Hi all, I'm relatively new to Quartus, but have used Altera and their other tools long ago. Currently, I'm using Quartus II web edition using Block/Schematic entry building a MAX II device. ...
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Altera_Forum
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17 years ago

Thanks pletz,

The document you linked is, I believe, a sub-section of the handbook ... which I downloaded and read a few days ago.

More specifically to my question, refer to the IO structure diagram on page 2-24 of the document you linked. As one can see, there's a great deal of configuration that can be specified for an IO point. Where I'm a bit confused is how these various settings are configured using schematic symbols.

For example, if you want to specify an open drain output, I believe you place a Primitives/Buffer/opndrn symbol before the pin. There are, however, many more options that I'm having trouble finding (or guessing) in the symbols library.

What I need is a cross-reference that correlates the desired I/O function to the relative symbol in the library. Does such a cross-reference exist ?