Using an Emulator to defeat watchdog

Almost all the embedded designs I take credit for detect the presence of, or the operation of an emulator to defeat a watchdog circuit. Obviously when stepping through code, having the processor reset is not much help.
So, for the SHARC processors (ADSP-21065L & ADSP-21160N), the ICE TRST signal is used which goes high when the test port is active and the DSP core paused. Has anyone else done this, what has been your experience - or can you recommend a better way (by the way jumpers and switches or any miss configurable parts are not allowed).
Anyone know a down side to this, perhaps newer processor issues?

 

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    •  Analog Employees 
    on Oct 11, 2011 9:35 AM

    Hi Steve,

       The implementation of JTAG hastn changed from ADSP -2106x processors to the newer processors. So i feel that if you were able to successfully implement the above mentioned system in the ADSP-2106x you should be able to do the same in the newer processors.

    Other than that with the information provided, i dont see any other issues.

    Thanks

    Deepa

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  • 0
    •  Analog Employees 
    on Oct 11, 2011 9:35 AM

    Hi Steve,

       The implementation of JTAG hastn changed from ADSP -2106x processors to the newer processors. So i feel that if you were able to successfully implement the above mentioned system in the ADSP-2106x you should be able to do the same in the newer processors.

    Other than that with the information provided, i dont see any other issues.

    Thanks

    Deepa

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