AS3722 datasheet(61/199 Pages) AMSOSRAM

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[v1-01] 2015-Sep-07

AS3722 − Detailed Descriptions- System Functions

Stand-By: Shows different options to enter and leave the stand-by state.

Stand-By Sequence

• Regulators which have the sdX/ldoX_stby_on bit set will

stay active during stand-by

• Regulators which have the sdX/ldoX_stby_on bit set and

are part of the sequence (regX_select_stby) with a

regX_voltage_stby>0 will change to the defined voltage in

the sequence and stay on this voltage during stand_by

• Regulators which are part of the sequence

(regX_select_stby) with a regX_voltage_stby=0 will be

turned off in the sequence.

• Regulators which have the sdX/ldoX_stby_on bit cleared

and are part of the sequence (regX_select_stby) with a

regX_voltage_stby>0 will change to the defined voltage in

the sequence and be turned off at the end of the sequence

• Regulators which have the sdX/ldoX_stby_on bit cleared

and are not part of the sequence will be turned off at the

end of the sequence

Figure 58:

Stand-By Leave

Stand-By Leave: Describes the possibilities of the PMIC to leave the stand-by state

Leave

The chip will come out of stand-by with any IRQ activation (it’s not possible to leave with the

same GPIO you entered stand-by)

If enable1_deepsleep=1 the chip will come out of stand-by with ENABLE1 going HIGH or

the LID or AC_OK interrupt.

Start-Up sequence is provided defined by regX_select_stby, regX_delay_stdby and

delay_time_stby

State

Description

ENABLE1

any interrupt

enable1_deepsleep

wakeup from

stand-by/deep-

sleep

interrupt

masking

any interrupt

not masked

set XINT output

lid_int

oc_ok_int

disable_stby_lid_int

disable_stby_acok_int

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