RTC_SS
20.3.5.34 RTC_PMIC Register (offset = 98h) [reset = 0h]
RTC_PMIC is shown in
and described in
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
Copyright © 2011–2013, Texas Instruments Incorporated