for USB 2.0/3.0 (2.5mA limit in low power suspend mode).
There is no support for USB suspend mode in the ADuM6000. The ADuM5000 and
ADuM6000 can be suspended to draw very little current, <<1mA, but it turns off
the secondary side and resuming would be an issue. There would also need to be
some processor control to suspend the part from the Upstream side. Whether
this would be useful depends on the details of the particular application.