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Interrupts and Events Registers

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4.6.1.2 AUXWUSEL Register (Offset = 4h) [reset = X]

AUXWUSEL is shown in Figure 4-7 and described in Table 4-12.

Wake-up Selector For AUX This register contains pointers to 3 events which are routed to AON_WUC as

wakeup sources for AUX. AON_WUC will start a wakeup sequence for the AUX domain when either of the

3 selected events are asserted. A wakeup sequence will guarantee that the AUX power switches are

turned on, LDO resources are available and SCLK_HF is available and selected as clock source for AUX.

Note: It is recommended ( or required when AON_WUC:AUXCLK.PWR_DWN_SRC=NONE) to also setup

a wakeup event here before AUX is requesting powerdown. ( AUX_WUC:PWRDWNREQ.REQ is

asserted] ) as it will speed up the wakeup procedure.

Figure 4-7. AUXWUSEL Register

31 30 29 28 27 26 25 24

RESERVED

R-X

23 22 21 20 19 18 17 16

RESERVED WU2_EV

R-X R/W-3Fh

15 14 13 12 11 10 9 8

RESERVED WU1_EV

R-X R/W-3Fh

7 6 5 4 3 2 1 0

RESERVED WU0_EV

R-X R/W-3Fh

Table 4-12. AUXWUSEL Register Field Descriptions

Bit Field Type Reset Description

31-22 RESERVED R X

Software should not rely on the value of a reserved. Writing any

other value than the reset value may result in undefined behavior.

254

Interrupts and Events SWCU117A–February 2015–Revised March 2015

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