MAXQ3181-RAN+ datasheet(69/84 Pages) MAXIM

69 / 84 page

Low-Power, Active Energy, Polyphase AFE

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Neutral Current

Auxiliary Channel Configuration (AUX_CFG) (0x010)

The MAXQ3181 can monitor the RMS value of one auxiliary channel in addition to its normal processing. The

Auxiliary Channel Configuration register selects which input the auxiliary channel processes and what processing is

applied to the auxiliary channel.

DSP System Configuration

System Clock Frequency (SYS_KHZ) (0x012)

This register contains the system clock frequency in kHz units. Because the default frequency is 8MHz, this register

defaults to 0x1F40.

Bit:

Name:

—

Reset:

Bit:

Name:

—

ENAUX

—

AUX_MUX

Reset:

BIT

NAME

FUNCTION

15:7

—

Reserved.

ENAUX

Enable Auxiliary Channel. When set, enables auxiliary channel processing.

2:0

AUX_MUX

Auxiliary Channel Input Select. This three-bit field selects the input to be processed by the auxiliary

channel.

001 = IN

Bit:

Name:

System Clock Frequency High Byte

Reset:

0x1F

Bit:

Name:

System Clock Frequency Low Byte

Reset:

0x40

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