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TMS570LS3137: I cannot create an oscillator-induced reset

M S
Prodigy 30 points
Part Number: TMS570LS3137

Hello

I use to  TMS570LS3137 microcontroller.  In this device, as a result of oscillator and pll shifts, I activated the reset status via the PLLCTL1 register. Normally, I use the checkClockMonitor function to reset the device by oscillator. However, when I feed the VCLKAn clock sources of the device with PLL1, this reset does not occur. What is the reason? I do not have any problems with the PLL-induced reset that I have created using the checkPLL1Slip function.A reset occurs when I change the VCLKAn clock source to PLL2 or VCLK.

VCLKAn Clock Source

Thank you in advance for your help.

  • 0
    TI__Guru**** 196306 points

    Hello,

    The PLL slip may be configured to generate a reset, and the OSC failure may also be configured to generate a reset. To generate OSC failure, you can short one of crystal pins to GND. I don't think changing the source of VCLKAx can generate PLL slip.

    PLL slip means that the PLL is running either too fast or too slow