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10.2.1.12 KEYWRITEAREA Register (Offset = 400h) [reset = X]
KEYWRITEAREA is shown in Figure 10-14 and described in Table 10-22.
Key Write Area
Figure 10-14. KEYWRITEAREA Register
31 30 29 28 27 26 25 24
RESERVED
R/W-X
23 22 21 20 19 18 17 16
RESERVED
R/W-X
15 14 13 12 11 10 9 8
RESERVED
R/W-X
7 6 5 4 3 2 1 0
RAM_AREA7 RAM_AREA6 RAM_AREA5 RAM_AREA4 RAM_AREA3 RAM_AREA2 RAM_AREA1 RAM_AREA0
R/W-X R/W-X R/W-X R/W-X R/W-X R/W-X R/W-X R/W-X
Table 10-22. KEYWRITEAREA Register Field Descriptions
Bit Field Type Reset Description
31-8 RESERVED R/W X
Software should not rely on the value of a reserved. Writing any
other value than the reset value may result in undefined behavior.
7 RAM_AREA7 R/W X
Represents an area of 128 bits. Select the key store RAM area(s)
where the key(s) needs to be written. Writing to multiple RAM
locations is only possible when the selected RAM areas are
sequential.
0h = This RAM area is not selected to be written
1h = This RAM area is selected to be written
6 RAM_AREA6 R/W X
Represents an area of 128 bits. Select the key store RAM area(s)
where the key(s) needs to be written. Writing to multiple RAM
locations is only possible when the selected RAM areas are
sequential.
0h = This RAM area is not selected to be written
1h = This RAM area is selected to be written
5 RAM_AREA5 R/W X
Represents an area of 128 bits. Select the key store RAM area(s)
where the key(s) needs to be written. Writing to multiple RAM
locations is only possible when the selected RAM areas are
sequential.
0h = This RAM area is not selected to be written
1h = This RAM area is selected to be written
4 RAM_AREA4 R/W X
Represents an area of 128 bits. Select the key store RAM area(s)
where the key(s) needs to be written. Writing to multiple RAM
locations is only possible when the selected RAM areas are
sequential.
0h = This RAM area is not selected to be written
1h = This RAM area is selected to be written
3 RAM_AREA3 R/W X
Represents an area of 128 bits. Select the key store RAM area(s)
where the key(s) needs to be written. Writing to multiple RAM
locations is only possible when the selected RAM areas are
sequential.
0h = This RAM area is not selected to be written
1h = This RAM area is selected to be written
835
SWCU117A–February 2015–Revised March 2015
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