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LMK04826: LOS_TIMEOUT unit Hz? or usec?

cafain
Mastermind 6365 points
Part Number: LMK04826
Other Parts Discussed in Thread: LMK04806

Hi,

I will ask about CLK_LOS setting of LMK04826.

Datasheet (SNAS 605AR) page 73 Register 0x14B has LOS_TIMEOUT setting bit.
Timeout unit is Hz.
Do I need to calculate the actual time as the reciprocal of Hz?

For example, 370 kHz ≈ 2.7 usec

best regards
Cafain

  • 0
    TI__Mastermind 28530 points
    The units are Hz as indicated for CLKinX frequency... although I think it's any transition, so assuming a 50% duty cycle, the timeout to any transition is actually half the period. I would need to double check this to be sure.

    73,
    Timothy
  • 0 in reply to Timothy T
    Mastermind 6365 points

    Hi,Timothy-san
    Thanks for your support

    I am referring to Table69 of the data sheet (SNAS489K) page79 of LMK04806 though it is another device.
    I think LMK04826 and LMK04806 are similar in specifications.

    If there is no signal in the half cycle period of the set frequency,
    I believe that if there is no change within a half cycle,
    it is judged that a signal with a lower frequency than that frequency is input,
    but my opinion is wrong Is not it?

    I expect to support Timothy-san

    best regards
    Cafain

  • 0 in reply to cafain
    Mastermind 6365 points

    hello Timothy-san

    Did you check it?
    I look forward to your support.

    best regards
    cafain