ade7880 Analog Devices, Inc., ade7880 Datasheet - Page 20

• Manufacturer Part Number: ade7880
• Description: Polyphase Multifunction Energy Metering Ic With Harmonic Monitoring
• Manufacturer: Analog Devices, Inc.

ADE7880
Table 11. Recommended Actions When Changing Power Modes
Initial Power
Mode
PSM0
PSM1
PSM2
PSM3
Recommended Actions
Before Setting Next
Power Mode
Stop DSP by setting the run
register = 0x0000.
Disable HSDC by clearing
Bit 6 (HSDEN) to 0 in the
CONFIG register.
Mask interrupts by setting
MASK0 = 0x0 and
MASK1 = 0x0.
Erase interrupt status flags
in the STATUS0 and STATUS1
registers.
No action necessary.
No action necessary.
No action necessary.
PSM0
Wait until the IRQ1 pin
is triggered low.
Poll the STATUS1
register until Bit 15
(RSTDONE) is set to 1.
Wait until the IRQ1
is triggered low.
Poll the STATUS1
register until Bit 15
(RSTDONE) is set to 1.
Wait until the IRQ1
is triggered low.
Poll the STATUS1
register until Bit 15
(RSTDONE) is set to 1.
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pin
pin
PSM1
Current mean absolute
values (mav) computed
immediately.
xIMAV registers can be
accessed immediately.
Wait until the
triggered low.
Current mean absolute
values compute at this
moment.
xIMAV registers may be
accessed from this
moment.
Wait until the
triggered low.
Current mav circuit
begins computations at
this time.
xIMAV registers can be
accessed from this
moment.
Next Power Mode
IRQ1 pin
IRQ1
Preliminary Technical Data
pin is
PSM2
Wait until the IRQ0
or
triggered
accordingly.
Wait until the IRQ0
or
triggered
accordingly.
Wait until the
or IRQ1 pin is
triggered
accordingly.
IRQ1 pin is
IRQ1 pin is
IRQ0
PSM3
No action
necessary.
No action
necessary.
No action
necessary.