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reset CPU can preserve memory content?

jiang peng
Prodigy 90 points
Other Parts Discussed in Thread: TMS320DM8148

Hi all,

 we have a TMS320DM8148( Contex A8) CPU and we will reset this CPU in some error case. But may I know after reset CPU (not power lost), the memory content is preservable ? The memory include L1/L2 and DDR memory.

 thanks

ivan

  • 0
    TI__Genius 11470 points

    Hello,

    Rajat will answer here.

    Thank you.

    BR

    Vladimir

  • 0 in reply to Vladimir-XID
    Prodigy 90 points

    hi Vladimir,

     May I know if the internel ram may corrupt or DDR?

    could you please share some detail information?

     we have two programs may need interact each other by sharing internal and external ram. One of them will reset CPU, so we need to know after CPU reset, the memory content is still intact. These program run at ARM core.

     thanks

    Ivan

  • 0 in reply to jiang peng
    TI__Expert 8780 points

    Ivan,

    How will the software reset the processor, using software reset mechanism or Power on reset (external). My understanding is that If its power on reset then we may not be able to guarantee internal RAM content preservation, DDR contents can be preserved as long as the software configures DDR in self refresh mode in beginning  I think DDR self refresh mode is default in most software configurations.

    If however its just a soft reset, then the internal and external RAM contents will be preserved.

    Regards

    Rajat