ADE7880 ADC output

Hi ADE experts,
well, After following the kick-start steps to make the ade7880 works as an energy meter. I tried to read the Vrms and Vinsant registers but i found something weird. The register value always is high with little number of swing. According to the datasheet the ADC output swings between +5326737 and -5326738. when max input volt is .5v but the values doesn't follow that.

for debugging, I have read used the EVAL kit and the GUI to read the RMSvolt but also the value always high with little swing!. do i misunderstand something?


[locked by: dlath at 2:30 PM (GMT -4) on 21 Aug 2020]
[unlocked by: dlath at 2:30 PM (GMT -4) on 21 Aug 2020]