TRNG_CONFIG

nRF5340 Product Specification

Address offset: 0x10C

TRNG ring oscillator length configuration

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 A A
Reset 0x00000000 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 0 0 0 0
ID R/W Field Value ID Value Description
A

RW

ROSC_LEN

Set the length of the oscillator ring (= the number of inverters) out of four possible configurations.

ROSC1

0

Use shortest ROSC1 ring oscillator configuration.

ROSC2

1

Use ROSC2 ring oscillator configuration.

ROSC3

2

Use ROSC3 ring oscillator configuration.

ROSC4

3

Use longest ROSC4 ring oscillator configuration.