MAXQ3181-RAN+ datasheet(34/84 Pages) MAXIM

34 / 84 page

Low-Power, Active Energy, Polyphase AFE

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CFP Pulse Threshold (THR1) (0x022)

This register designates the threshold of the CFP pulse. This value is used to set the meter constant for the CFP

pulse output. When the CFP pulse accumulator exceeds the value set in this register, the CFP pulse output is acti-

vated and the CFP pulse accumulator is reduced by the amount in this register.

Calibration Registers

Current Gain, Phase X = A/B/C/N (X.I_GAIN) (A: 0x130, B: 0x21C, C: 0x308, N: 0x12E)

This register contains gain coefficient for phase X current channel. The raw values are taken from the selected mea-

surement quantity and scaled by the factor:

Note: Bit 15 of this register must be set to zero for correct operation.

X I GAIN

214

Bit:

Name:

THR1 Byte 3

Reset:

0x00

Bit:

Name:

THR1 Byte 2

Reset:

0x10

Bit:

Name:

THR1 Byte 1

Reset:

0x00

Bit:

Name:

THR1 Byte 0

Reset:

0x00

Bit:

Name:

Current Gain Coefficient High Byte

Reset:

0x40

Bit:

Name:

Current Gain Coefficient Low Byte

Reset:

0x00

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