15.8.1. Authentication Status Register, 0xFB8

The Authentication Status Register reports the required security level. Table 15.27 shows how the bit values correspond with the Authentication Status Register functions.

Table 15.27. Authentication Status Register bit functions

BitsValueFunction
[31:4]0x0000000Reserved, RAZ.
[3]-

Noninvasive debug enabled, DBGEN or NIDEN. When this bit is LOW, all trigger inputs are disabled.

[2]b1Noninvasive debug features supported.

[1]

-

Invasive debug enabled, DBGEN. When this bit is LOW, the following trigger outputs are disabled:

  • ETM external inputs, EXTIN[3:0]

  • PMU external inputs, PMUEXTIN[3:0].

[0]b1Invasive debug features supported.

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