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TMS570LS1224: Issue with the PLL configuration

Part Number: TMS570LS1224
Other Parts Discussed in Thread: HALCOGEN

Hello TI,

when i am enabling the RESET on PLL SLIP in the halcogen 04.06.01, the other option BYPASS on PLL SLIP is also enabled. Is this a bug in Halcogen or it is a recommended setting ??

Regards,

Bharat

  • Hello Bharat,

    If BPOS[1:0} (Bypass) is disabled:

    • automatic response to the PLL slip is prevented
    • ESM/exception is NOT generated
    • reset on slip is not generated regardless of the state of the ROS bit
    • status bits are set on a PLL slip independent of BPOS[1:0]

    If ByPass is enabled:

    • PLL slip causes the clock source into GCM clock source 1 to shift from the PLL to the oscillator
    • ESM/exception is generated
    • reset on slip is generated if ROS is set

    So both fields (ROS and BPOS) should be set at the same time. 

  • Hello Wang,

    Thanks for the Information.

    From the Dataset , ByPass must to be enabled for ROS to be enabled. That is reason in Halcogen, when i enable RESET on PLL SLIP in Halcogen the other option BYPASS on PLL SLIP is also enabled.

    Now i understood why halcogen was doing that.
    Thanks for the quick help.

    Regards,
    Bharat