3.2. Programming and reading ETM registers

There are three methods of access to the ETM registers:

It is implementation defined which interfaces are supported. Concurrent access from multiple interfaces is supported. See About the access permissions for ETM registers

The description of each method of access includes information on any restrictions that apply to that method. However you must also see Restrictions on the type of access to ETM registers for information about restrictions that apply to all three methods. ETM register access models, for different versions of the ETM architecture, are described in ETM register access models.

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