NXP Semiconductors K32 L2A Series, Reference Manual, Page: 1262 / 1379

48.1.3.3.40.3 Diagram
Bits
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
R
Reserved
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
Reserved
FRQ_CT_FAIL
ENT_
VAL
HW_
ERR
W
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
48.1.3.3.40.4 Fields
Field Function
31-3
—
Reserved.
2
FRQ_CT_FAIL
Read only: Frequency Count Fail. The frequency counter has detected a failure. This may be due to
improper programming of the TRNG0_FRQMAX and/or TRNG0_FRQMIN registers, or a hardware failure
in the ring oscillator.
0 - No hardware nor self test frequency errors.
1 - The frequency counter has detected a failure.
1
ENT_VAL
Read only: Entropy Valid. Will assert only if TRNG ACC bit is set, and then after an entropy value is
generated. Will be cleared when TRNG0_ENT15 is read. (TRNG0_ENT0 through TRNG0_ENT14 should
be read before reading TRNG0_ENT15).
0 - Busy generation entropy. Any value read is invalid.
1 - TRNG can be stopped and entropy is valid if read.
0
HW_ERR
Read: Error status. 1 = error detected. 0 = no error. Any HW error in the TRNG will trigger this interrupt.
0 - no error
1 - error detected.
48.1.3.3.41 TRNG0 Version ID (MS) (TRNG0_VID1)
48.1.3.3.41.1 Address
Register Offset
TRNG0_VID1 400A50F0h
Standalone True Random Number Generator (SA-TRNG).
K32 L2A Reference Manual, Rev. 2, 01/2020
1262 NXP Semiconductors