Address offset: 0x440 + (n × 0x4)
Access for bus access generated from the external domain n
List capabilities of the external domain n
| Bit number | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID | C | B | A | A | |||||||||||||||||||||||||||||||
| Reset 0x00000002 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | |||
| ID | R/W | Field | Value ID | Value | Description | ||||||||||||||||||||||||||||||
| A |
R |
SECUREMAPPING |
Define configuration capabilities for TrustZone Cortex-M secure attribute This does not affect DPPI in the external domain |
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|
NonSecure |
0 |
The bus access from this external domain always have the non-secure attribute set |
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|
Secure |
1 |
The bus access from this external domain always have the secure attribute set |
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|
UserSelectable |
2 |
Non-secure or secure attribute for bus access from this domain is defined by the EXTDOMAIN[n].PERM register |
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| B |
RW |
SECATTR |
Peripheral security mapping This bit has effect only if EXTDOMAIN[n].PERM.SECUREMAPPING reads as UserSelectable |
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|
NonSecure |
0 |
Bus accesses from this domain have the non-secure attribute set |
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|
Secure |
1 |
Bus accesses from this domain have secure attribute set |
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| C |
RW |
LOCK |
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|
Unlocked |
0 |
This register can be updated |
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|
Locked |
1 |
The content of this register can't be changed until the next reset |
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