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Altera_Forum
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11 years ago

Avalon MM "sniffer" connections in QSYS

I seem to be stuck in connecting a new QSYS component into my system that I have generated. The new component, lets call it bus_tracker, monitors the data output of an Avalon MM master for ...
Altera_Forum's avatar
Altera_Forum
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11 years ago

Hey Bob,

For your "first" implementation of your sniffer, simply create a component with an Avalon-MM slave interface, an Avalon-MM master interface, and a conduit. Connect the slave interface directly to the master interface, and extend the address bits appropriately, eg., the addresses on a 32-bit interface need to have the two LSBs of the master address zeroed. Then via your conduit interface probe all the slave signals.

Once you see how "easy" that is, you may decide to register the slave-to-master path, and then add logic to monitor transaction ordering, and convert the conduit to an Avalon-MM slave interface set of registers that you can read the transaction monitoring results from.

If you're totally confused by how to create the slave/master Tcl scripts, let me know, and I'll put something together and post it.

Cheers,

Dave