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ADE7880
Table 11. Recommended Actions When Changing Power Modes
Data Sheet
Initial Power
Before Setting Next
Next Power Mode
Mode
PSM0
Power Mode
Stop DSP by setting the
Run register = 0x0000
PSM0
PSM1
Current mean absolute
values (mav) computed
PSM2
Wait until the IRQ0
or IRQ1 pin is
PSM3
No action
necessary
immediately
triggered
Disable HSDC by clearing
Bit 6 (HSDCEN) 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
xIMAV registers can be
accessed immediately
accordingly
PSM1
No action necessary
Wait until the IRQ1 pin
is triggered low
Wait until the IRQ0
or IRQ1 pin is
No action
necessary
Poll the STATUS1
register until Bit 15
(RSTDONE) is set t o 1
triggered
accordingly
PSM2
No action necessary
Wait until the IRQ1 pin
is triggered low
Wait until the IRQ1 pin
triggered low
No action
necessary
Poll the STATUS1
register until Bit 15
(RSTDONE) is set to 1
Current mean absolute
values compute at this
moment
xIMAV registers may be
accessed from this
moment
PSM3
No action necessary
Wait until the IRQ1 pin
is triggered low
Poll the STATUS1
register until Bit 15
Wait until the IRQ1 pin is
triggered low
Current mav circuit
begins computations at
Wait until the IRQ0
or IRQ1 pin is
triggered
accordingly
(RSTDONE) is set to 1
this time
xIMAV registers can be
accessed from this
moment
Rev. A | Page 22 of 104
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