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BF533 total crash

I've a BF533 system in C++ with Code in L1. It works without problems, but crashes from time to time. Not even the watchdog can reboot it. Only a powerdown or manual reset helps. It happens with the release version booted out of an external flash and it happens using the debug version with an ICE-1000. Also the ICE-1000 looses the JTAG connection when the crash happens.

How to debug????

I've tried CCES in version 2.7.0 and in version 2.8.3 - no difference! Even changing the startup files by copying the basiccrt.s into the project didn't change anything.

Could this be some unhandled exception that would break the JTAG connection, too?

Any hints/ideas for me??

Best Regards Claus

  • I forgot to add: this cannot be an issue of some spike in the processor supply. I've checked this with a scope measuring the minimum supply voltages over a long period - no spikes!

  • Hi,

    Can you explain about your application?

    Are you using Ezkit or custom board?

    Did you ran any application when crashing?

    Please refer "Pin Description" in page no:17 in the below ADSP-BF533 datasheet and please ensure that we have to terminate all the processor signals properly.

    And also, all power supplies must meet the specifications provided in the Operating Conditions (VDD_INT, VDD_EXT, VDD_RTC).

    Please make sure we should provide processor input clock frequency clean(without noise).

    Can you please verify the Power-Up Reset Timing and Clock and Reset Timing, Whether it meet the datasheet specification.

    Anand Selvaraj.