SAMPLE_CNT

nRF5340 Product Specification

Address offset: 0x130

Sample count defining the number of CPU clock cycles between two consecutive noise source samples.

After selecting the desired ring oscillator length configuration in TRNG_CONFIG this register must be set to the corresponding value from FICR.TRNG90B.ROSC1-4.

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 A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
Reset 0x0000FFFF 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ID R/W Field Value ID Value Description
A

RW

VALUE

Number of CPU clock cycles between two consecutive noise source samples.

If the von Neumann corrector is bypassed, the minimum value set in this register must not be smaller than decimal 17.