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Altera_Forum's avatar
Altera_Forum
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15 years ago

do SignalTap modules have to be instantiated at the top level of a design

I want to add a SignalTap module I generated with the MegaWizard to my design. Does the SignalTap module have to be instantiated at the top level of the design or can I instantiate it in a lower leve...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Naturally it could be instantiated anywhere since hierarchy doesn't mean anything in the fitter, but you might have to bring signals to the top-level to get them out JTAG. Looking at the megafunction though, the only signals are the inputs of what you're tapping and clock. So the JTAG connection must be back-doored just like with an .stp file. So no, there wouldn't be any reason to put it at the top-level or signals to bring to the top-level. Out of curiousity, how come you're using the megafunction?