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TMS470M PLL slip detection

Phil Eagleton
Intellectual 335 points


Hi All,

I am trying to decide whether to use PLL slip detection which results in a reset, or a bypass.

Is there a status indication, or interrupt request which can be polled / handled when a PLL bypass happens?

thanks,

Phil

  • 0
    TI__Mastermind 22715 points

    Phil,

    You can configure the PLL control 1 register (0xffffff70) to make PLL slip to generate a reset or be bypassed. If you choose to generate a reset, The system exception status register (0xffffffe4) will show you the source of reset. PLL slip will set the failure status bits in the the global status register (0xffffffec). You can always check this register to see if there is a PLL slip. PLL slip will not generate any other interrupt.

    Thanks and regards,

    Zhaohong

  • 0
    TI__Mastermind 49120 points

    Phil,

    A minor correction to what Zhaohong stated: the PLL slip indication is also routed to the Error Signaling Module's group1 channel 10. You can choose to generate an interrupt based on this input to the ESM by configuring the ESM group1 interrupt enable register.

    Regards, Sunil