3.3.18. Authentication Status Register

The STMAUTHSTATUS Register characteristics are:

Purpose

Reports the required security level and current status of those enables. Where functionality changes on a given security level, this change in status must be reported in this register.

Usage constraints

There are no usage constraints.

Configurations

This register is available in all configurations.

Attributes
Offset

0xFB8

Type

RO

Reset

The reset value depends on the authentication interface signals, which are system dependent.

Width

32

Figure 3.18 shows the STMAUTHSTATUS Register bit assignments.

Figure 3.18. STMAUTHSTATUS Register bit assignments

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Table 3.19 shows the STMAUTHSTATUS Register bit assignments.

Table 3.19. STMAUTHSTATUS Register bit assignments

BitsNameFunction
[31:8]Reserved

Reserved.

[7:6]SNID

Indicates the security level for secure non-invasive debug:

b10 = Functionality disabled

b11 = Functionality enabled.

[5:4]SID

Indicates the security level for secure invasive debug:

b10 = Functionality disabled

b11 = Functionality enabled.

[3:2]NSNID

Indicates the security level for non-secure non-invasive debug:

b10 = Functionality disabled

b11 = Functionality enabled.

[1:0]NSID

Indicates the security level for non-secure invasive debug:

b10 = Functionality disabled

b11 = Functionality enabled.


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