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Data Sheet
ADE7880
Bit
13:12
Mnemonic
VTOIC[1:0]
Default Value
00
Description
These bits decide what phase voltage is considered together with Phase C current in the
power path.
00 = Phase C voltage.
01 = Phase A voltage.
10 = Phase B voltage.
11 = reserved. When set, the ADE7880 behaves like VTOIC[1:0] = 00.
15:14
Reserved
Reserved.
Table 48. MMODE Register (Address 0xE700)
Bit
1:0
2
Mnemonic
Reserved
PEAKSEL[0]
Default Value
1
Description
Reserved.
PEAKSEL[2:0] bits can all be set to 1 simultaneously to allow peak detection on all three
phases simultaneously. If more than one PEAKSEL[2:0] bits are set to 1, then the peak
measurement period indicated in the PEAKCYC register decreases accordingly because zero
crossings are detected on more than one phase.
When this bit is set to 1, Phase A is selected for the voltage and current peak registers.
3
4
7:5
PEAKSEL[1]
PEAKSEL[2]
Reserved
1
1
000
When this bit is set to 1, Phase B is selected for the voltage and current peak registers.
When this bit is set to 1, Phase C is selected for the voltage and current peak registers.
Reserved. These bits do not manage any functionality.
Table 49. ACCMODE Register (Address 0xE701)
Bit
1:0
Mnemonic
WATTACC[1:0]
Default Value
00
Description
00: signed accumulation mode of the total and fundamental active powers. The total and
fundamental active energy registers and the CFx pulses are generated in the same way.
01: positive only accumulation mode of the total and fundamental active powers. In this
mode, although the total and fundamental active energy registers are accumulated in
positive only mode, the CFx pulses are generated in signed accumulation mode.
10: reserved. When set, the device behaves like WATTACC[1:0] = 00.
11: absolute accumulation mode of the total and fundamental active powers. The total and
fundamental energy registers and the CFx pulses are generated in the same way.
3:2
VARACC[1:0]
00
00: signed accumulation of the fundamental reactive powers. The fundamental reactive
energy registers and the CFx pulses are generated in the same way.
01: reserved. When set, the device behaves like VARACC[1:0] = 00.
10: the fundamental reactive power is accumulated, depending on the sign of the
fundamental active power: if the active power is positive, the reactive power is accumulated
as is, whereas if the active power is negative, the reactive power is accumulated with reversed
sign. In this mode, although the total and fundamental reactive energy registers are
accumulated in absolute mode, the CFx pulses are generated in signed accumulation mode.
11: absolute accumulation mode of the fundamental reactive powers. In this mode,
although the total and fundamental reactive energy registers are accumulated in absolute
mode, the CFx pulses are generated in signed accumulation mode.
5:4
CONSEL[1:0]
00
These bits select the inputs to the energy accumulation registers. IA’, IB’, and IC’ are IA, IB, and
00: 3-phase four wires with three voltage sensors.
01: 3-phase three wires delta connection. In this mode, BVRMS register contains the rms
value of VA-VC.
10: 3-phase four wires with two voltage sensors.
11: 3-phase four wires delta connection.
Rev. A| Page 99 of 104
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