NXP Semiconductors K32 L2A Series, Reference Manual, Page: 1241 / 1379

will be decremented, and a retry will occur if the Retry Count has not reached zero. If the
Retry Count has reached zero, an error will be generated. Note that this address (0x30) is
used as TRNG0_SCRxC4L only if TRNG0_MCTL[PRGM] is 1. If
TRNG0_MCTL[PRGM] is 0, this address is used as TRNG0_SCRxC4C readback
register.
48.1.3.3.22.3 Diagram
Bits 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
R
Reserved RUN4_RNG
W
Reset
0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0
Bits 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
Reserved RUN4_MAX
W
Reset
0 0 0 0 0 0 0 0 0 1 0 0 1 0 1 1
48.1.3.3.22.4 Fields
Field Function
31-28
—
Reserved. Always 0.
27-16
RUN4_RNG
Run Length 4 Range. The number of runs of length 4 (for both 0 and 1) detected during entropy
generation must be greater than RUN4_MAX - RUN4_RNG, else a retry or error will occur. This register
is cleared to the default POR value by writing the TRNG0_MCTL[RST_DEF] bit to 1.
15-12
—
Reserved. Always 0.
11-0
RUN4_MAX
Run Length 4 Maximum Limit. Defines the maximum allowable runs of length 4 (for both 0 and 1)
detected during entropy generation. The number of runs of length 4 detected during entropy generation
must be less than RUN4_MAX, else a retry or error will occur. This register is cleared to the default POR
value by writing the TRNG0_MCTL[RST_DEF] bit to 1.
48.1.3.3.23 TRNG0 Statistical Check Run Length 5 Count (TRNG0_SCR5C)
48.1.3.3.23.1 Address
Register Offset Description
TRNG0_SCR5C 400A5034h Accessible at this address when
TRNG0_MCTL[PRGM] = 0]
Chapter 48 SA-TRNG Standalone
K32 L2A Reference Manual, Rev. 2, 01/2020
NXP Semiconductors 1241