A.8.2. Authentication interface signals

Table A.18 shows the authentication interface signals. All signals which include a 4-bit field, [3:0], encode up to four processors. For these signals, bit[0] represents processor 0, bit[1] represents processor 1, bit[2] represents processor 2, and bit[3] represents processor 3.

Table A.18. Authentication interface signals

SignalDirectionDescription
DBGEN[3:0]Input

Invasive debug enable:

0

Not enabled.

1

Enabled.

NIDEN[3:0]Input

Non-invasive debug enable:

0

Not enabled.

1

Enabled.

SPIDEN[3:0]Input

Secure privileged invasive debug enable:

0

Not enabled.

1

Enabled.

SPNIDEN[3:0]Input

Secure privileged non-invasive debug enable:

0

Not enabled.

1

Enabled.


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