2.1. About the functions

Figure 2.1 shows the main functional blocks. The ETM-A5 operates in a single clock domain, CLK, which is identical to the processor clock. The ATB and APB interfaces can be operated at slower clock rates, but still synchronously to CLK, using the ATCLKEN and PCLKENDBG clock enables respectively. If the system requires the ETM-A5 to operate in an asynchronous clock domain the appropriate bridge components must be included on the interfaces of the macrocell as shown in Figure 2.1.

Figure 2.1. Macrocell functional blocks and clock domains

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