The external debug interface enables both external and self-hosted debug agents to access debug registers. Access to the debug registers is partitioned as follows:

Debug registers

This function is system register based and memory-mapped. You can access the debug register map using the APB slave port.

Performance monitor

This function is system register based and memory-mapped. You can access the performance monitor registers using the APB slave port.

Activity monitor

This function is system register based and memory-mapped. You can access the activity monitor registers using the APB slave port.

Trace registers

This function is memory-mapped.

ELA registers

This function is memory-mapped.