2 Replies Latest reply on Aug 11, 2020 1:03 PM by MiZh_4707896

    Does the Cortex-R4 core in BCM43907 has ETM?

    MiZh_4707896

      Hi,

       

      I have an evaluation board CYW43907.  On the SoC, there is a Cortex-R4 core.

      I am trying to trace it. But In the debug ROM table, I only found two "Cortex-R4 Debug", no ETM(Embedded Trace Macrocell ).

       

      (I still don't why there are two "Cortex-R4 Debug".)

       

      I checked  BCM43907 datasheet, it says:

      "Using multiple technologies to reduce cost, the ARM Cortex-R4 enables improved memory utilization, reduced pin overhead, and

      reduced silicon area. It also has extensive debugging features, including real-time tracing of program execution.

      "

       

      Sounds like it has ETM or similar things.  I am wondering someone can give me a hint about this.

       

      Thanks