The PMBus specification (>= Rev1) specifies that the query command returns a data byte with a binary bit pattern of
001 in bits 4:2 if the format used for the queried command is a "16 bit signed number".
this is the only mention I can find of this data format (distinct from other 16 bit formats already covered by other bit patterns) within the PMBus standard.
What does this relate to? (AVS maybe?) Am I missing something silly?
*Note that I come at this from the device designer side rather than the host system side