15.5.4 Non-Security Clear Register B

Table 15-5. 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:	NONSECCLRB
Offset:	0x10
Reset:	0x00000000
Property:	R/K


Bit	31	30	29	28	27	26	25	24
	NONSEC63	NONSEC62	NONSEC61	NONSEC60	NONSEC59	NONSEC58	NONSEC57	NONSEC56
Access	R/K	R/K	R/K	R/K	R/K	R/K	R/K	R/K
Reset	0	0	0	0	0	0	0	0


Bit	23	22	21	20	19	18	17	16
	NONSEC55	NONSEC54	NONSEC53	NONSEC52	NONSEC51	NONSEC50	NONSEC49	NONSEC48
Access	R/K	R/K	R/K	R/K	R/K	R/K	R/K	R/K
Reset	0	0	0	0	0	0	0	0


Bit	15	14	13	12	11	10	9	8
	NONSEC47	NONSEC46	NONSEC45	NONSEC44	NONSEC43	NONSEC42	NONSEC41	NONSEC40
Access	R/K	R/K	R/K	R/K	R/K	R/K	R/K	R/K
Reset	0	0	0	0	0	0	0	0


Bit	7	6	5	4	3	2	1	0
	NONSEC39	NONSEC38	NONSEC37	NONSEC36	NONSEC35	NONSEC34	NONSEC33	NONSEC32
Access	R/K	R/K	R/K	R/K	R/K	R/K	R/K	R/K
Reset	0	0	0	0	0	0	0	0

Bits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 – NONSEC Non-Secure

H2PB_NONSEC_INIT_VAL[k] is the initial value of this bit at Reset. Writing a 1 to this bit clears the non-security bit for APB Client k, k=63...32. Writing a 0 does nothing. Reading this bit delivers the current value of non-security bit of APB Client k, k=63...32.

The write command is accepted only if bit H2PB.WPCTRL.WPEN is not set. Accessing this register is also subject to security checks depending on the value of bit H2PB.CTRLA.SECEN. A write to any bit when this register is write-protected results in an error message being returned.