AS3722 datasheet(63/199 Pages) AMSOSRAM

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[v1-01] 2015-Sep-07

AS3722 − Detailed Descriptions- System Functions

Figure 60:

Regulator Stand-By Exit Sequence

Regulator Stand-By Exit Sequence: Shows timing relationships of the regulators and corresponding control

signals during exiting stand-by mode

regulator stand-by exit

Reg9_select_stby<4:0>

...

CLK32k pin enabled

XRES_OUT

Power up sequence controlled

start power up sequence, by any interrupt

or ENALBE1=HIGH or ac_ok_int or lid_int if enable1_deepsleep=1

0msec(If Reg8_delay_stby=0)

1msec(If Reg8_delay_stby=1 and delay_time_stby=0)

4msec(If Reg8_delay_stby=1 and delay_time_stby=1)

I2C/SPI controlled

if eanble2_enable=1

ENABLE2

SD0

Interrupt/ENABLE1

0msec(If Reg0_delay_stby=0)

1msec(If Reg0_delay_stby=1 and delay_time_stby=0)

4msec(If Reg0_delay_stby=1 and delay_time_stby=1)

Reg7_voltage_stby>0

Reg6_voltage_stby>0

Reg1_voltage_stby>0

Reg0_voltage_stby>0

Caution! No I2C/SPI command allowed as

long as the sequence is not finished

All (other) LDOs/DCDCs

which have been deactivated

during standby

Reg8_select_stby<4:0>

Reg1_select_stby<4:0>

Reg0_select_stby<4:0>

low if stby_reset_enable=1

res_timer (if stby_reset_enable=1)

0msec(If Reg9_delay_stby=0)

1msec(If Reg9_delay_stby=1 and delay_time_stby=0)

4msec(If Reg9_delay_stby=1 and delay_time_stby=1)

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