4.2. Signal protocol variants

There are three variants of the ETM protocol, defined by the major architecture version as follows:

ETMv1

Implemented in ETM7 and ETM9.

ETMv2

Implemented in ETM10.

ETMv3

Implemented in ETM10RV, ETM11RV, and CoreSight ETMs.

For more information, see ETM versions and variants.

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