The least significant 19 bits of a supply sensor's 32-bit register contain sensory readings in a floating point format. All supply sensor data is stored in an unsigned format, an exponent of 2-15 or 2-14 (for extended range supplies, i.e., HDIO bank voltage sensors). Extended range supplies are stored with a 2-15 exponent and include all sensors with supplies that can exceed 1.6V, namely HDIO banks.
Figure 1. Supply Mode Example
Figure 2. Supply Extended Example