ADPA7005: More information for VREF and VDET Pins

Hi Folks,

Can someone please help me in understanding the use of VREF and VDET?

Also, what does these interfacing diagram refers to? Like how much current will these two pins sink?

It would be great I get the current consumption table or required bias current for these pins or just the values of resistor and diode(V, I combination).

Thanks in Advance

Harsh