K60P100M100SF2RM Datasheet, PDF (791/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Field
16
ERR
15–12
FIFO_SIZE
11–8
FIFO_LVL
7
Reserved
6
NSDN
5
SDN
4
STDN
3
RS
2
SLP
1
BUSY
Chapter 33 Random Number Generator (RNGB)
RNG_SR field descriptions (continued)
Error.
Description
Indicates an error was detected in the RNGB. Read the RNG_ESR register for details.
0 No error.
1 Error detected.
FIFO size.
Size of the FIFO, and maximum possible FIFO level. The bits should be interpreted as an integer. This
value is set to five on the default version of RNGB.
FIFO level.
Indicates the number of random words currently in the output FIFO. The bits should be interpreted as an
integer.
This read-only field is reserved and always has the value zero.
New seed done.
Indicates that a new seed is ready for use during the next seed generation process.
Seed done.
Indicates the RNG has generated the first seed.
0 Seed generation process not complete.
1 Completed seed generation since the last reset.
Self test done.
Indicates the self test is complete. This bit is cleared by hardware reset or a new self test is initiated by
setting RNG_CMD[ST].
0 Self test not complete.
1 Completed a self test since the last reset.
Reseed needed.
Indicates the RNGB needs to be reseeded. This is done by setting RNG_CMD[GS], or automatically if
RNG_CR[AR] is set.
0 RNGB does not need to be reseeded.
1 RNGB needs to be reseeded.
Sleep.
Indicates if the RNGB is in sleep mode. When set, the RNGB is in sleep mode and all internal clocks are
disabled. While in this mode, access to the FIFO is allowed. Once the FIFO is empty, the RNGB fills the
FIFO and then enters sleep mode again.
0 RNGB is not in sleep mode.
1 RNGB is in sleep mode.
Busy.
Table continues on the next page...
K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.
791