Since the Data sheet talked about an "alternative address" I kept poking for a while.
The app note gives the way to do it:
http://www.ist-ag.com/eh/ist-ag/resource.nsf/imgref/Download_AHM_E2.0[smallpdf.com]ROEGER.pdf/$FILE/AHM_E2.0[smallpdf.com]ROEGER.pdf
Sometimes I wish the OP's would put some effort into this.