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AEnergy register values in ADE7753

Question asked by on Feb 5, 2014
Latest reply on Feb 7, 2014 by dlath

In datasheet of ADE 7753 its written that AEnergy register starts from 0x000000 and have positive swing upto 0x7FFFFF and negative swing upto 0x800000. My question is

Fig 66 of datasheet seems to mean 0x400000 is a negative energy while 0x3FFFFF is a positive energy. I can't understand how.

It seems like AEnergy register stores the negative number in 1's complement form and it should be 0xC00000 instead of 0x400000 in fig 66 of datasheet.

Reply me whether I am correct or not. Thanks for help in advance.