Texas Instruments CC2650DK Benutzerhandbuch
Random Number Generator
16.7.1.3 IRQFLAGSTAT Register (Offset = 8h) [reset = X]
IRQFLAGSTAT is shown in
and described in
.
Interrupt Status
Figure 16-6. IRQFLAGSTAT Register
31
30
29
28
27
26
25
24
NEED_CLOCK
RESERVED
R-X
R-X
23
22
21
20
19
18
17
16
RESERVED
R-X
15
14
13
12
11
10
9
8
RESERVED
R-X
7
6
5
4
3
2
1
0
RESERVED
SHUTDOWN_
RDY
OVF
R-X
R-X
R-X
Table 16-8. IRQFLAGSTAT Register Field Descriptions
Bit
Field
Type
Reset
Description
31
NEED_CLOCK
R
X
1: Indicates that the TRNG is busy generating entropy or is in one of
its test modes - clocks may not be turned off and the power supply
voltage must be kept stable. 0: TRNG is idle and can be shut down
its test modes - clocks may not be turned off and the power supply
voltage must be kept stable. 0: TRNG is idle and can be shut down
30-2
RESERVED
R
X
Software should not rely on the value of a reserved. Writing any
other value than the reset value may result in undefined behavior.
other value than the reset value may result in undefined behavior.
1
SHUTDOWN_OVF
R
X
1: The number of FROs shut down (i.e. the number of '1' bits in the
ALARMSTOP register) has exceeded the threshold set by
ALARMCNT.SHUTDOWN_THR Writing '1' to
IRQFLAGCLR.SHUTDOWN_OVF clears this bit to '0' again.
ALARMSTOP register) has exceeded the threshold set by
ALARMCNT.SHUTDOWN_THR Writing '1' to
IRQFLAGCLR.SHUTDOWN_OVF clears this bit to '0' again.
0
RDY
R
X
1: Data are available in OUT0 and OUT1. Acknowledging this state
by writing '1' to IRQFLAGCLR.RDY clears this bit to '0'. If a new
number is already available in the internal register of the TRNG, the
number is directly clocked into the result register. In this case the
status bit is asserted again, after one clock cycle.
by writing '1' to IRQFLAGCLR.RDY clears this bit to '0'. If a new
number is already available in the internal register of the TRNG, the
number is directly clocked into the result register. In this case the
status bit is asserted again, after one clock cycle.
1166
Random Number Generator
SWCU117A – February 2015 – Revised March 2015
Copyright © 2015, Texas Instruments Incorporated