Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

Single Avalon-MM Master to Muliple Avalon-MM Slaves

I'm trying to connect multiple Avalon-MM slaves to a single Avalon-MM Master. I realize this essentially automatic using Qsys, if you're IP is defined as modules in Qsys. But all of my IP is alrea...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

It ain't pretty, but:

Avalon-MM Pipeline Bridge components are relatively small. Add one for your master, with it's s0 slave port exported. Add one for every slave, with it's m0 master port exported.

Alternatively, create a dummy/passthrough module which doesn't do anything other than advertise the slave port, and then exports a conduit with the Avalon signals for your VHDL to connect to. Connect that to a Pipeline Bridge with it's s0 exported, and most of the resources consumed will be by the fabric. That is a little more work, but you get rid of almost all the bridges.