ADE7880 single phase three wire (AB line connect to meter actually)

Question

Hello 
 Customer would like use ADE7880 for single-phase three wire (But Phase A & Phase B line connect to meter actually). The power environment is PhaseA and PhaseB (V AB =220V). But neutral wire will not input to meter (ADE7880). In other words, Only phase A and Phase B connect to ADE7880 (Fig. 1). Has any doc or reference schematics of ADE7880 for this connection? How to connect Phase A and Phase B to ADE7880? 
 Another question for Fig 2. the register of ADE7880 should have I A and IB ? But how to calculate V AB and IAB value or get these information by above meter setup? it is a little urgent and looking forward to receiving a reply. Thank you. 
 
 Fig,1

Fig 2. 
 
 BR 
 Patrick

dave.smith · Accepted Answer

Vab is the voltage from line a to line b . you have Va connected to Vap Van would be connected to VB 
 The ade7880 Vap and Van would be measuring Voltage line A to line B)

dave.smith · Answer

Couple of modifications 
 
 PSm0 pin should be tied high or mcu controlled. 
 I would add and RC to the reset pin for noise immunity. 
 the ADE7880 should have the pad under the part tied to gnd 
 Dave

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ADE7880 single phase three wire (AB line connect to meter actually)