ADE7953 power measurement

Hi all,

I have to use this IC7953 for power measurement for single phase. I have to measure voltage and current passing through phase or output power from the phase. but i could not understand circuit diagram so please any one can help me to understand and help me in design circuit for power measurement of single phase. I have referred data sheet many times and tried given circuit in data sheet but i cant get any data from IC7953.

Thanks in advance for support and help.