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2.1. TAP interface

The ETM9 is programmed using a TAP interface. The structure of the TAP interface is shown in Figure 2.1.

Figure 2.1. ETM9 TAP structure

Figure 2.1. ETM9 TAP structure

The ETM9 TAP is logically part of the ARM core that it is connected to. That is, Multi-ICE only detects one TAP in a single ARM9 ETM system.

The ETM9 uses scan chain 6. For details, refer to the Embedded Trace Macrocell Specification.

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