Texas Instruments CC2650DK Benutzerhandbuch
Cryptography Registers
10.2.1.39 IRQSTAT Register (Offset = 790h) [reset = X]
IRQSTAT is shown in
and described in
Interrupt Status
Figure 10-41. IRQSTAT Register
31
30
29
28
27
26
25
24
DMA_BUS_ER
KEY_ST_WR_
KEY_ST_RD_E
RESERVED
R
ERR
RR
R-X
R-X
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
DMA_IN_DON
RESULT_AVAI
E
L
R-X
R-X
R-X
Table 10-49. IRQSTAT Register Field Descriptions
Bit
Field
Type
Reset
Description
31
DMA_BUS_ERR
R
X
This bit is set when a DMA bus error is detected during a DMA
operation. The value of this register is held until it is cleared via
IRQCLR.DMA_BUS_ERR Note: This error is asserted if an error is
detected on the AHB master interface during a DMA operation. Note:
This is not an interrupt source.
operation. The value of this register is held until it is cleared via
IRQCLR.DMA_BUS_ERR Note: This error is asserted if an error is
detected on the AHB master interface during a DMA operation. Note:
This is not an interrupt source.
30
KEY_ST_WR_ERR
R
X
This bit is set when a write error is detected during the DMA write
operation to the key store memory. The value of this register is held
until it is cleared via IRQCLR.KEY_ST_WR_ERR Note: This error is
asserted if a DMA operation does not cover a full key area or more
areas are written than expected. Note: This is not an interrupt
source.
operation to the key store memory. The value of this register is held
until it is cleared via IRQCLR.KEY_ST_WR_ERR Note: This error is
asserted if a DMA operation does not cover a full key area or more
areas are written than expected. Note: This is not an interrupt
source.
29
KEY_ST_RD_ERR
R
X
This bit will be set when a read error is detected during the read of a
key from the key store, while copying it to the AES engine. The value
of this register is held until it is cleared via
IRQCLR.KEY_ST_RD_ERR. Note: This error is asserted if a key
location is selected in the key store that is not available. Note: This is
not an interrupt source.
key from the key store, while copying it to the AES engine. The value
of this register is held until it is cleared via
IRQCLR.KEY_ST_RD_ERR. Note: This error is asserted if a key
location is selected in the key store that is not available. Note: This is
not an interrupt source.
28-2
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
DMA_IN_DONE
R
X
This bit returns the status of DMA data in done interrupt.
0
RESULT_AVAIL
R
X
This bit is set high when the Crypto peripheral has a result available.
865
SWCU117A – February 2015 – Revised March 2015
Copyright © 2015, Texas Instruments Incorporated