MAXQ3180-RAN+ datasheet(19/48 Pages) MAXIM

19 / 48 page

Low-Power, Multifunction, Polyphase AFE

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Table 4. RAM Register Summary

NAME

ADDRESS

(BYTE)

DESCRIPTION

R/W

DEFAULT

VALUE

(HEX)

BITS

NAME

DESCRIPTION

15:7, 0

—

Reserved. Should be set to 0.

EXTCLK

External clock

ACCEN

Enable energy accumulation

RST

Software reset

CRCEN

Enable CRC

LOWPM

LPMM Mode

STATUS0

0x000

Status

R/W

0x0000

STOPM

Stop Mode

15:10,

7:6, 2:0

—

Reserved. Should be set to 0.

TMPC1

Temperature (double)

TMPC0

Temperature (single)

5:4

HRM

00: no filter

01: bandpass filter

1x: bandstop filter

OPMODE

0x002

Mode of

Operation

R/W

0x0000

APPSEL

Select apparent energy:

0: sqrt(P2 + Q2)

1: IRMS x VRMS

Select harmonics filter

SEQERR

Phase sequence error

VUNBF

Voltage unbalance flag

IUNBF

Current unbalance flag

MISV

Missed voltage detected

NOZC

No zero crossings

SAG

Voltage sag detected

Overvoltage detected

Overcurrent detected

7:6

—

Reserved

DCH_Q

Pulse 2 direction change

DCH_P

Pulse 1 direction change

EOVF

Energy overflow

TMRD

Temperature reading ready

PWRF

Supply power-fail interrupt

STATUS1

0x004

Status.

Device drives

IRQ low when

any bit in this

and not masked.

R/W

0x0001

NOINIT

Not initialized

INT_MASK

0x006

Interrupt Mask

(Enable)

R/W

0x0001

Same as STATUS1

Enable corresponding IRQ when

set to 1

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