NXP Semiconductors K22F series - Page 754

RNG_CR field descriptions
Field Description
31–5
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
4
SLP
Sleep
Specifies whether RNGA is in Sleep or Normal mode.
NOTE:
You can also enter Sleep mode by asserting the DOZE signal.
0 Normal mode
1 Sleep (low-power) mode
3
CLRI
Clear Interrupt
Clears the interrupt by resetting the error-interrupt indicator (SR[ERRI]).
0 Do not clear the interrupt.
1 Clear the interrupt. When you write 1 to this field, RNGA then resets the error-interrupt indicator
(SR[ERRI]). This bit always reads as 0.
2
INTM
Interrupt Mask
Masks the triggering of an error interrupt to the interrupt controller when an OR underflow condition
occurs.
An OR underflow condition occurs when you read OR[RANDOUT] and SR[OREG_LVL]=0. See the
Output Register (OR) description.
0 Not masked
1 Masked
1
HA
High Assurance
Enables notification of security violations (via SR[SECV]).
A security violation occurs when you read OR[RANDOUT] and SR[OREG_LVL]=0.
NOTE:
This field is sticky. After enabling notification of security violations, you must reset RNGA to
disable them again.
0 Disabled
1 Enabled
0
GO
Go
Specifies whether random-data generation and loading (into OR[RANDOUT]) is enabled.
NOTE:
This field is sticky. You must reset RNGA to stop RNGA from loading OR[RANDOUT] with data.
0 Disabled
1 Enabled
Memory map and register definition
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
754 NXP Semiconductors