DFEEYEDACMON[4:0] provides the average verticalheight used by the DFE.
This translates to the internal vertical eye opening in mV that the DFE block sees.
I wish to know how this translation is done in order to understand how big the eye is internally.
The DFEEYEDACMON value is nominally 180 mVppd.
It is encoded as min: 5'b00000 = 0 mVppd and max: 5'b11111 = 180 mVppd.
However these are the caveats:
1. It is an "average" eye and not meant to be an absolute.
2. The 180 mVppd varies over PVT.
This is an internal debug tool and not a customer ready feature.