NXP Semiconductors K32 L2A Series, Reference Manual, Page: 1227 / 1379

48.1.3.3.10 TRNG0 Frequency Count Minimum Limit (TRNG0_FRQMIN)
48.1.3.3.10.1 Address
Register Offset
TRNG0_FRQMIN 400A5018h
48.1.3.3.10.2 Function
The TRNG0 Frequency Count Minimum Limit Register defines the minimum allowable
count taken by the Entropy sample counter during each Entropy sample. During any
sample period, if the count is less than this programmed minimum, a Frequency Count
Fail is flagged in TRNG0_MCTL[FCT_FAIL] and an error is generated.
48.1.3.3.10.3 Diagram
Bits 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
R
Reserved FRQ_MIN
W
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Bits 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
FRQ_MIN
W
Reset
0 0 0 0 0 1 1 0 0 1 0 0 0 0 0 0
48.1.3.3.10.4 Fields
Field Function
31-22
—
Reserved. Always 0.
21-0
FRQ_MIN
Frequency Count Minimum Limit. Defines the minimum allowable count taken during each entropy
sample. This field is writable only if TRNG0_MCTL[PRGM] bit is 1. This field will read zeroes if
TRNG0_MCTL[PRGM] = 0. This field is cleared to its reset value at POR.
48.1.3.3.11 TRNG0 Frequency Count (TRNG0_FRQCNT)
Chapter 48 SA-TRNG Standalone
K32 L2A Reference Manual, Rev. 2, 01/2020
NXP Semiconductors 1227