RNGCONTROL.CONTROL

Address offset: 0x1000

Control register


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID															Q	P	P	P	P	O	N	M	L	K	J	I	H	G		F	E	D	C	B	A
Reset 0x00040000				0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	ENABLE										Enable the RNG. Clearing this bit resets the RNG FSM.
B	RW	LFSREN										Select between the RNG with asynchronous free running ring oscillators (when 0) and the Pseudo-Random generator with synchronous oscillators for simulation purpose (when 1).
C	RW	TESTEN										Select input for conditioning function and continuous tests:
			NORMAL	0								Noise source (normal mode).
			TEST	1								Test data register (test mode).
D	RW	CONDBYPASS										Conditioning function bypass.
			NORMAL	0								the conditioning function is used (normal mode).
			BYPASS	1								the conditioning function is bypassed (to observe entropy source directly).
E	RW	INTENREP										Interrupt enable for Repetition Count Test failure.
F	RW	INTENPROP										Interrupt enable for Adaptive Proportion Test failure (1024-sample window).
G	RW	INTENFULL										Interrupt enable for FIFO full.
H	RW	SOFTRST										Software reset: This bit is not cleared automatically.
			NORMAL	0								Normal mode.
			CTEST	1								The continuous test, the conditioning function and the FIFO are reset.
I	RW	INTENPRE										Interrupt enable for AIS31 preliminary noise alarm.
J	RW	INTENALM										Interrupt enable for AIS31 noise alarm.
K	RW	FORCEACTIVEROS										Force oscillators to run when FIFO is full.
L	RW	HEALTHTESTBYPASS										Bypass NIST tests such that the results of the start-up and online test do not affect the FSM state.
M	RW	AIS31BYPASS										Bypass AIS31 tests such that the results of the start-up and online tests do not affect the FSM state.
N	RW	HEALTHTESTSEL										Select input to health test module:
			BEFORE	0								Before conditioning.
			AFTER	1								After conditioning.
O	RW	AIS31TESTSEL										Select input to the AIS31 test module:
			BEFORE	0								Before conditioning.
			AFTER	1								After conditioning.
P	RW	NB128BITBLOCKS										Number of 128 bit blocks used in AES-CBCMAC post-processing. This value cannot be zero.
Q	RW	FIFOWRITESTARTUP										Enable write of the samples in the FIFO during start-up.