29.7.16 Non-secure Interrupt

This register allows to set the NMI or external interrupt control and status registers in non-secure mode, individually per interrupt pin.

Table 29-18. Register Bit Attribute Legend
Symbol	Description	Symbol	Description	Symbol	Description
R	Readable bit	HC	Cleared by Hardware	(Grey cell)	Unimplemented
W	Writable bit	HS	Set by Hardware	X	Bit is unknown at Reset
K	Write to clear	S	Software settable bit	—	—

Name:	NONSEC
Offset:	0x40
Reset:	0x00000000
Property:	PAC Write-Protection, Write-Secure


Bit	31	30	29	28	27	26	25	24
	NMI
Access	R/W
Reset	0


Bit	23	22	21	20	19	18	17	16

Access
Reset


Bit	15	14	13	12	11	10	9	8
	EXTINT[15:8]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0


Bit	7	6	5	4	3	2	1	0
	EXTINT[7:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0

Bit 31 – NMI Non-Secure Non-Maskable Interrupt

This bit enables the non-secure mode of NMI.

The registers whose content is set in non-secure mode by NONSEC.NMI are NMICTRL and NMIFLAG registers.

Value	Description
0	NMI is secure.
1	NMI is non-secure.

Bits 15:0 – EXTINT[15:0] Non-Secure External Interrupt

The bit x of EXTINT enables the non-secure mode of EXTINTx.

The registers whose EXTINT bit or bitfield x is set in non-secure mode by NONSEC.EXTINTx are EVCTRL, ASYNCH, IDEBOUNCEN, INTENCLR, INTENSET, INTFLAG and CONFIG registers.

Value	Description
0	EXTINTx is secure.
1	EXTINTx is non-secure.