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Altera_Forum's avatar
Altera_Forum
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12 years ago

Reset Polarity in QSYS

Hi, how can I manage different reset polarities in QSys? I have some blocks (PIO) that need reset_n and some blocks (DMA, RAM, custom) that need reset. Is there a block that negates reset log...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

QSys uses the signal role to know if it must be inverted. If the signal role ends with _n, it will automatically invert it. When using the component editor, QSys will automatically use the _n role if the signal name ends with _n.

So as long as your component blocks are well defined, QSys should cope with any reset polarity. In my experience the generated QSys instance always uses a active low reset signal on the top level though.