STPM32TR datasheet(64/121 Pages) STMICROELECTRONICS

64 / 121 page

Theory of operation

STPM32, STPM33, STPM34

64/121

DS10272 Rev 8

Status interrupt register

When an event is detected, DSP sets the status register (DSP_SR1 and DSP_SR2) bits

that remain latched, even if the event ceases, until they are cleared to zero by a write

operation.

Table 22. Status register

Bit

Internal signal

Description

PH1+PH2 status(1)

Sign total active power

Sign total reactive power

Overflow total active energy

Overflow total reactive energy

PH2 IRQ status(1)

Sign secondary channel active power

Sign secondary active fundamental power

Sign secondary reactive power

Sign secondary apparent power

Overflow secondary channel active energy

Overflow secondary channel active fundamental energy

Overflow secondary channel reactive energy

Overflow secondary channel apparent energy

PH1 IRQ status

Sign primary channel active power

Sign primary channel active fundamental power

Sign primary channel reactive power

Sign primary channel apparent power

Overflow primary channel active energy

Overflow primary channel active fundamental energy

Overflow primary channel reactive energy

Overflow primary channel apparent energy

Cx IRQ status

Current sigma-delta bitstream stuck

AH1 - accumulation of current

Current swell detected

Current swell end

Vx IRQ status

Voltage sigma-delta bitstream stuck

Voltage period error

Voltage sag detected

Voltage sag end

Voltage swell detected

Voltage swell end

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