ARM Cortex A9 - A.13 External Debug interface

Signal Descriptions
ARM DDI 0388I Copyright © 2008-2012 ARM. All rights reserved. A-21
ID073015 Non-Confidential
A.13 External Debug interface
The following sections describe the external debug interface signals:
• Authentication interface
• APB interface signals on page A-22
• CTI signals on page A-22
• Miscellaneous debug interface signals on page A-23.
A.13.1 Authentication interface
Table A-25 shows the authentication interface signals.
Table A-25 Authentication interface signals
Name I/O Source Description
DBGEN I Security controller Invasive debug enable:
0 Not enabled.
1 Enabled.
NIDEN I Non-invasive debug enable:
0 Not enabled.
1 Enabled.
SPIDEN I Secure privileged invasive debug enable:
0 Not enabled.
1 Enabled.
SPNIDEN I Secure privileged non-invasive debug enable:
0 Not enabled.
1 Enabled.