AS3722 datasheet(131/199 Pages) AMSOSRAM

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Page 130

ams Datasheet

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[v1-01] 2015-Sep-07

AS3722 − Register Description

Figure 132:

Resetreason

Addr:31h

Resetreason

Bit

Bit Name

Default

Access

Bit Description

7:4

reset_reason

RW_SM

This flag indicates the exit of active mode reason

0 : VPOR has been reached (battery or supply

insertion from scratch)

1 : ResVoltFall reached by VBAT or vsup_min

reached by VSUP

2 : Software forced by force_reset (soft or hard)

3 : Software forced by power_off

4 : ONKEY longpress has been detected

5 : XRES_IN pin

6 : THERM pin

7 : overtemperature T140 (die, SD0, SD1, or SD6)

8 : watchdog

9 : VSUP overvoltage reached

10 : Transition to standby mode

3:0

startup_reason

RW_SM

This flag indicates the startup reason after power

off

0 : VPOR has been reached (battery or supply

insertion from scratch)

1 : ONKEY has been pulled high in power off mode

2 : AC_OK has been detected in power off mode

3 : LID has been detected in power off mode

4 : RTC wakeup has been detected in power off

mode

5 : Interrupt in standby mode has been detected

6 : Reset cycle

7 : Soft reset cycle

8 : ResVoltRise was reached

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