Series 2 Secure Debug#

NOTE: This section replaces AN1190: Series 2 Secure Debug. Further updates to this application note will be provided here.

This application note describes how to lock and unlock the debug access of Series 2 devices. Many aspects of the debug access, including the secure debug unlock, are discussed. The Debug Challenge Interface (DCI) and Mailbox Interface for locking and unlocking debug access are also included.

The debug locks and unlocks for the Cortex-M33 debug interface are implemented through the Secure Engine on Series 2 devices.

Key Points#

• Basic overview of the Secure Engine.

• Debug port access by Debug Challenge Interface (DCI) or Mailbox Interface.

• New locking and unlocking features for Series 2 devices.

• Examples for provisioning and Secure Debug Unlock.