AXI or Avalon MM

Hi Hidde,

--- Quote Start ---

Is there any reason why one should want to use AXI within FPGA fabric, apart from your IP is AXI or your customer wants it ? Because i'm trying to figure out the pro's and con's of having AXI or Avalon.

--- Quote End ---

It comes down to what you want to use the code you develop for. If I was writing code to target Altera and Xilinx devices, then I would create AXI components. If the code is specific to an Altera design, and I care more about ease of verification, then I'd write Avalon components.

You should apply the same philosophy as coding-style, i.e., use a style that matches the project code-base. In your case, if your Qsys system contains a lot of Avalon-MM components, then write the new components with Avalon-MM interfaces too. It will make the long-term maintenance of the code (potentially) easier (due to the common bus standard used in the code).

Cheers,

Dave