Datasheet

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ADE7953 Data Sheet

Rev. B | Page 66 of 72

Interrupt Enable and Interrupt Status Registers

Current Channel A and Voltage Channel Registers

Table 22. IRQENA Register (Address 0x22C and Address 0x32C)

Bits Bit Name Description

0 AEHFA Set to 1 to enable an interrupt when the active energy is half full (Current Channel A)

1 VAREHFA Set to 1 to enable an interrupt when the reactive energy is half full (Current Channel A)

2 VAEHFA Set to 1 to enable an interrupt when the apparent energy is half full (Current Channel A)

AEOFA

Set to 1 to enable an interrupt when the active energy has overflowed or underflowed (Current Channel A)

4 VAREOFA Set to 1 to enable an interrupt when the reactive energy has overflowed or underflowed (Current Channel A)

5 VAEOFA Set to 1 to enable an interrupt when the apparent energy has overflowed or underflowed (Current Channel A)

6 AP_NOLOADA Set to 1 to enable an interrupt when the active power no-load condition is detected on Current Channel A

7 VAR_NOLOADA Set to 1 to enable an interrupt when the reactive power no-load condition is detected on Current Channel A

8 VA_NOLOADA Set to 1 to enable an interrupt when the apparent power no-load condition is detected on Current Channel A

9 APSIGN_A Set to 1 to enable an interrupt when the sign of active energy has changed (Current Channel A)

10 VARSIGN_A Set to 1 to enable an interrupt when the sign of reactive energy has changed (Current Channel A)

11 ZXTO_IA Set to 1 to enable an interrupt when the zero crossing has been missing on Current Channel A for the length of

time specified in the ZXTOUT register

12 ZXIA Set to 1 to enable an interrupt when the current Channel A zero crossing occurs

OIA

Set to 1 to enable an interrupt when the current Channel A peak has exceeded the overcurrent threshold set in the

OILVL register

14 ZXTO Set to 1 to enable an interrupt when a zero crossing has been missing on the voltage channel for the length of

time specified in the ZXTOUT register

15 ZXV Set to 1 to enable an interrupt when the voltage channel zero crossing occurs

16 OV Set to 1 to enable an interrupt when the voltage peak has exceeded the overvoltage threshold set in the OVLVL

17 WSMP Set to 1 to enable an interrupt when new waveform data is acquired

18 CYCEND Set to 1 to enable an interrupt when it is the end of a line cycle accumulation period

19 Sag Set to 1 to enable an interrupt when a sag event has occurred

20 Reset This interrupt is always enabled and cannot be disabled

21 CRC Set to 1 to enable an interrupt when the checksum has changed

Table 23. IRQSTATA Register (Address 0x22D and Address 0x32D) and RSTIRQSTATA Register (Address 0x22E and

Address 0x32E)

Bits Bit Name Description

0 AEHFA Set to 1 when the active energy register is half full (Current Channel A)

1 VAREHFA Set to 1 when the reactive energy register is half full (Current Channel A)

2 VAEHFA Set to 1 when the apparent energy register is half full (Current Channel A)

3 AEOFA Set to 1 when the active energy register has overflowed or underflowed (Current Channel A)

4 VAREOFA Set to 1 when the reactive energy register has overflowed or underflowed (Current Channel A)

5 VAEOFA Set to 1 when the apparent energy register has overflowed or underflowed (Current Channel A)

6 AP_NOLOADA Set to 1 when the active power no-load condition is detected Current Channel A

7 VAR_NOLOADA Set to 1 when the reactive power no-load condition is detected Current Channel A

8 VA_NOLOADA Set to 1 when the apparent power no-load condition is detected Current Channel A

APSIGN_A

Set to 1 when the sign of active energy has changed (Current Channel A)

10 VARSIGN_A Set to 1 when the sign of reactive energy has changed (Current Channel A)

11 ZXTO_IA Set to 1 when a zero crossing has been missing on Current Channel A for the length of time specified in the

ZXTOUT register

12 ZXIA Set to 1 when a current Channel A zero crossing is detected

13 OIA Set to 1 when the current Channel A peak has exceeded the overcurrent threshold set in the OILVL register

14 ZXTO Set to 1 when a zero crossing has been missing on the voltage channel for the length of time specified in the

ZXTOUT register

15 ZXV Set to 1 when the voltage channel zero crossing is detected

16 OV Set to 1 when the voltage peak has exceeded the overvoltage threshold set in the OVLVL register