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ADE7880 DSP update rate & RMS settling time

Question asked by vignesh on Oct 30, 2012
Latest reply on Oct 30, 2012 by hmani

Hi All. I'm trying to develop an energy meter based on ADE7880. The datasheet tells the DSP runs at the rate of 8kHz and the values of registers in the AIRMS, BIRMS, CIRMS also updates at the same rate. The DSP end of computation is signaled by the setting of bit 17 (DREADY) in STATUS0. But however the settling time for IRMS is quoted at 580ms. What does this mean? Should I keep clearing the DREADY for 580ms and then read the RMS registers ? Please suggest me how to proceed on this.

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