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CCS/TMS570LS0432: Tms570ls0432 custom board is not working

Indrajit Lawande95
Expert 1350 points
Part Number: TMS570LS0432
Other Parts Discussed in Thread: HALCOGEN

Tool/software: Code Composer Studio

Hi , we have designed board using tms570ls0432 ic and taking most of reference from launchpad schematic . But we missed one thing which is heart of any micro -controller that is clock source (crystal oscillator ).

And now it is not working . But every micro-controller  has internal oscillator.

I changed the clock source for all modules from HALcogen software but still it is not working .

What else can i do to make it work..

Thanks and Regards,

Indrajit.

  • 0
    TI__Guru 72500 points
    The TMS570 devices were not designed to run off of the internal oscillator. The internal oscillator is designed to allow the TMS570 to put itself into a safe state when an oscillator fault occurs. The PLL will not run off of the internal oscillator. That being said, the part will execute code running from the internal oscillator when the crystal is missing. Can you describe what you mean by "not working". Are you able to connect with CCS? If not, look at the nRST pin. Do you see it toggling? If so, check to see if you have "Reset on oscillator fault" set (PLLCTL1 bit 23).
  • 0 in reply to Bob Crosby
    Expert 1350 points
    Actually we tried to program the controller but while uploading program to controller it is showing like enable to access the device register . So we are unable to dump simple blink led program how can we change the "Reset on oscillator fault" set (PLLCTL1 bit 23) .

    Thank you.
  • 0 in reply to Indrajit Lawande95
    TI__Guru 72500 points

    Can you connect with CCS? If you use HALCoGen, it is on the PLL tab. By default, reset on oscillator fail is not enabled.