[TenTec] Argonaut II digital interfacing?

[Steve Berg]

Here is a question for the more digitally inclined folks on this list. 
I have been looking at the new 50 watt Tokyo Hy-Power amplifier and 
wonder if there is any way to use the digital port on the  Argonaut II 
to activate the automatic band switching on this neat little amplifier?

The amp is designed for interface to some newer Japanese QRP rigs.

Any ideas?

Thanks.

Steve WA9JML