Texas Instruments AM335 Series Technical Reference Manual

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20.3.5.34 RTC_PMIC Register (offset = 98h) [reset = 0h]
RTC_PMIC is shown in Figure 20-94 and described in Table 20-97.
Figure 20-94. RTC_PMIC Register
31 30 29 28 27 26 25 24
Reserved
R-0h
23 22 21 20 19 18 17 16
Reserved PWR_ENABLE_SM PWR_ENABLE_EN
R-0h R-0h R/W-0h
15 14 13 12 11 10 9 8
EXT_WAKEUP_STATUS EXT_WAKEUP_DB_EN
R/W-0h R/W-0h
7 6 5 4 3 2 1 0
EXT_WAKEUP_POL EXT_WAKEUP_EN
R/W-0h R/W-0h
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 20-97. RTC_PMIC Register Field Descriptions
Bit Field Type Reset Description
31-19 Reserved R 0h
18-17 PWR_ENABLE_SM R 0h
Power state machine state.
00b = Idle/Default
01b = Shutdown (ALARM2 and PWR_ENABLE_EN is set to 1).
Note: 31 us latency from ALARM2 event).
10b = Time-based wakeup (ALARM status is set).
11b = External-event-based wakeup (one or more bit set in
EXT_WAKEUP_STATUS)
16 PWR_ENABLE_EN R/W 0h
Enable for PMIC_POWER_EN signal
0b = Disable. When Disabled, pmic_power_en signal will always be
driven as 1, ON state.
1b = Enable. When Enabled: pmic_power_en signal will be
controlled by ext_wakeup, alarm, and alarm2; ON -> OFF (Turn
OFF) only by ALARM2 event; OFF -> ON (TURN ON) only by
ALARM event OR ext_wakeup event.
15-12 EXT_WAKEUP_STATUS R/W 0h External wakeup status.
Write 1 to clear EXT_WAKEUP_STATUS[n] status of ext_wakeup[n].
0b = External wakeup event has not occurred
1b = External wakeup event has occurred
11-8 EXT_WAKEUP_DB_EN R/W 0h External wakeup debounce enabled.
EXT_WAKEUP_DB_EN[n] controls ext_wakeup[n]
0b = Disable
1b = Enable. When enabled, RTC_DEBOUNCE_REG defines the
debounce time.
7-4 EXT_WAKEUP_POL R/W 0h External wakeup inputs polarity.
EXT_WAKEUP_POL[n] controls ext_wakeup[n].
0b = Active high
1b = Active low
3-0 EXT_WAKEUP_EN R/W 0h Enable external wakeup inputs.
EXT_WAKEUP_EN[n] controls ext_wakeup[n].
0b = Ext. wakeup disabled
1b = Ext. wakeup enabled
3668
Timers SPRUH73H–October 2011–Revised April 2013
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Texas Instruments AM335 Series Specifications

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Brand	Texas Instruments
Model	AM335 Series
Category	Computer Hardware
Language	English