RNG_HW_FLAGS

nRF5340 Product Specification

Address offset: 0x1C0

Hardware configuration of RNG engine. Reset value holds the supported features.

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 H G F E D C B A
Reset 0x0000000F 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1
ID R/W Field Value ID Value Description
A

R

EHR_WIDTH

Data width supported by the entropy collector

128Bits

0

128 bits EHR width

192Bits

1

192 bits EHR width

B

R

CRNGT_EXISTS

If this flag is set, the engine include support for continuous random number generator test.

C

R

AUTOCORR_EXISTS

If this flag is set, the engine include support for autocorrelation test.

D

R

BYPASS_EXISTS

If this flag is set, the engine include support for bypassing TRNG tests.

E

R

PRNG_EXISTS

If this flag is set, the engine include a pseudo-random number generator.

F

R

KAT_EXISTS

If this flag is set, the engine include support for known answer tests.

G

R

RESEEDING_EXISTS

If this flag is set, the engine include support for automatic reseeding.

H

R

RNG_USE_5_SBOXES

Disable

0

20 SBOX AES

Enable

1

5 SBOX AES