Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsPMICsPMIC - power monitoring Single phase TSSOP 28 Surface-mount

MAX71020

Single-Chip Electricity Meter AFE

22Maxim Integrated

Table 7. Register Map (continued)

NAME

BYTE

ADDRESS

R/W

DEFAULT

VALUE

DESCRIPTION

LOADED

QUANT_I0 0x026 R/W 0x0000 0000 Truncation/noise compensation for current in phase A Host

QUANT_0 0x027 R/W 0x0000 0000 Truncation/noise compensation for real power in phase A Host

QUANT_VAR0 0x028 R/W 0x0000 0000

Truncation/noise compensation for reactive power in

phase A

Host

QUANT_V0 0x029 R/W 0x0000 0000 Truncation/noise compensation for voltage in phase B Host

QUANT_I0 0x02A R/W 0x0000 0000 Truncation/noise compensation for current in phase B Host

QUANT_0 0x02B R/W 0x0000 0000 Truncation/noise compensation for real power in phase B Host

QUANT_VAR0 0x02C R/W 0x0000 0000

Truncation/noise compensation for reactive power in

phase B

Host

TEMP22 0x03C R/W 0x0000 024D

Temperature reading at 22NC. Used to calculate

temperature deviation from 22NC

Host

GAINADJ_0 0x040 R/W 0x0000 4000

Adjusts the amplitude for voltage inputs VA and VB for

temperature compensation. Default = unity gain.

Host

GAINADJ_1 0x041 R/W 0x0000 4000

Adjusts the amplitude for current input IA. Default =

unity gain.

Host

GAINADJ_2 0x042 R/W 0x0000 4000

Adjusts the amplitude for current input IB. Default =

unity gain.

Host

APULSEW 0x044 R —

—

WPULSE_CTR 0x045 R

—

Pulse counter for Wh (real power)

—

WPULSE_FRAC 0x046 R

—

Pulse generator numerator for Wh (real power)

—

WSUM_ACCUM 0x047 R

—

Pulse generator rollover accumulator for Wh (real power)

—

AVPULSER 0x048 R

— —

VPULSE_CTR 0x049 R

—

Pulse counter for Wh (real power)

—

VPULSE_FRAC 0x04A R

—

Pulse generator numerator for Wh (real power)

—

VSUM_ACCUM 0x04B R

—

Pulse generator rollover accumulator for Wh (real power)

—

0x04C…0x07F

—

Used by CE for internal variables

—

CESTATUS 0x080 R —

Status of the Compute Engine

—

BIT

—

DESCRIPTION

0 —

Sag status for voltage phase A.

Automatically clears when the voltage

rises above SAG_THR.

1 —

Sag status for voltage phase B.

Automatically clears when the voltage

rises above SAG_THR.

2 —

3 — Square wave at exact line frequency

31:4 —

TEMP_X 0x081 R — Temperature deviation from TEMP22 —

FREQ_X 0x082 R — Fundamental line frequency in units of (2520.6 x 2

-32

) Hz —

MAINEDGE_X 0x083 R —

Number of voltage zero crossings of either direction

during the previous accumulation interval

—