Thought I would keep all of those keenly interested in this thread up to date.

I've managed to get the unit working with the exception of the discrete power on. I'm using an AC power source so the unit is constantly powered and I also have it connected to the PS3 through the USB port with the discrete auto-on activated in the AA software.

This exact issued came up in the RC CI forum some time back but nobody posted the solution. I'm using the the hex code from the CI thread which appears to be the exact string from the AA web site hex code Excel file.

Thanks once again for the help.