ADUM1245 operating mode issues

Hi,

     My customer has the following two questions about ADUM1245 micro power isolator,

     1. In the SOIC-8 package, ADUM1245 only works in standard operating mode, is this correct?

     2. In the low-power operating mode, we need to send the dummy data once every startup, for solve DC correctness guarantee problem. So between every power on/off, we only need to send it once, right?  

      Please Kindly help us clarify those issues, thanks a lot for your support.