RM0046 Wakeup Unit (WKPU)
Doc ID 16912 Rev 5 777/936
29.4.2 Registers description
This section describes the Wakeup Unit registers.
NMI Status Flag Register (NSR)
This register holds the non-maskable interrupt status flags.
Figure 453. NMI Status Flag Register (NSR)
Address:
Base + 0x0000 Access: User read/write
0123456789101112131415
R NIF
NOVF
00000000000000
Ww1c w1c
Reset0000000000000000
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R0000000000000000
W
Reset0000000000000000
Table 415. NSR field descriptions
Field Description
0
NIF
NMI Status Flag
This flag can be cleared only by writing a 1. Writing a 0 has no effect. If enabled (NCR.NREEor
NCR.NFEE is set), NIFcauses an interrupt request.
0: No event has occurred on the pad.
1: An event as defined by NRRC.NREE or NCR.NFEE has occurred.
1
NOVF
NMI Overrun Status Flag
This flag can be cleared only by writing a 1. Writing a 0 has no effect. It will be a copy of the current
NIF value whenever an NMI event occurs, thereby indicating to the software that an NMI occurred
while the last one was not yet serviced. If enabled (NCR.NREEor NCR.NFEE set), NOVF causes
an interrupt request.
0: No overrun has occurred on NMI input.
1: An overrun has occurred on NMI input.
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