ADE9078 datasheet(102/108 Pages) AD

102 / 108 page

Data Sheet

ADE9078

Rev. 0| Page 101 of 107

Addr. Name

Bits

Bit Name

Settings Description

Reset

Access

[3:2]

VARACC

Total and fundamental reactive power

accumulation mode for energy registers and CFx

pulses.

0x0

R/W

00 Signed accumulation mode.

01 Absolute Value accumulation mode.

10 Positive accumulation mode.

11 Negative accumulation mode.

[1:0]

WATTACC

Total and fundamental active power accumulation

mode for energy registers and CFx pulses--see

VARACC.

0x0

R/W

0x493 CONFIG3

[15:5]

RESERVED

Reserved.

0x0

[4:2]

PEAKSEL

Set this bit to select which phase(s) to monitor

peak voltages and currents on. Write PEAKSEL[0]

to one to enable Phase A peak detection. Similarly,

PEAKSEL[1] enables Phase B peak detection and

PEAKSEL[2] enables Phase C peak detection.

0x0

R/W

[1:0]

RESERVED

Reserved.

0x0

0x49A ZX_LP_SEL

[15:5]

RESERVED

Reserved.

0x0

[4:3]

LP_SEL

Selects line period measurement used for

resampling.

0x3

R/W

00 APERIOD, line period measurement from Phase A

voltage.

01 BPERIOD, line period measurement from Phase B

voltage.

10 CPERIOD, line period measurement from Phase C

voltage.

11 COM_PERIOD, line period measurement on

combined signal from VA, VB, and VC.

[2:1]

ZX_SEL

Selects the zero-crossing signal, which can be

routed to CF3/ZX output pin and which is used for

line cycle energy accumulation.

0x3

R/W

00 ZXVA, Phase A voltage zero-crossing signal.

01 ZXVB, Phase B voltage zero-crossing signal.

10 ZXVC, Phase C voltage zero-crossing signal.

11 ZXCOMB, zero crossing on combined signal from

VA, VB, and VC.

RESERVED

Reserved.

0x0

0x49D PHSIGN

[15:10] RESERVED

Reserved.

0x0

SUM4SIGN

Sign of the sum of the powers included in the CF4

datapath. The CF4 energy is positive if this bit is

clear and negative if this bit is set.

0x0

SUM3SIGN

Sign of the sum of the powers included in the CF3

datapath. The CF3 energy is positive if this bit is

clear and negative if this bit is set.

0x0

SUM2SIGN

Sign of the sum of the powers included in the CF2

datapath. The CF2 energy is positive if this bit is

clear and negative if this bit is set.

0x0

SUM1SIGN

Sign of the sum of the powers included in the CF1

datapath. The CF1 energy is positive if this bit is

clear and negative if this bit is set.

0x0

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