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LMX2594: TICS Pro Setting

akihiko yokouchi
Intellectual 340 points
Part Number: LMX2594
Other Parts Discussed in Thread: USB2ANY

Please tell me about the "TICS Pro" settings.
The device has selected "LMX2594".
"CAL_CLK_DIV Div4, Fosc<=800" turns yellow on PC1. However, it does not turn yellow on PC2. Even if I load the setting file of PC2 to PC1, it remains yellow.
Should I reinstall "TICS Pro" on PC1?
By the way, it is normal that "CAL_CLK_DIV Div4, Fosc<=800" turns yellow in the attached configuration file? Or is it a malfunction?

LMX2594_Setting.tcs

  • 0
    TI__Genius 11900 points

    Hello Akihiko-san,

    It is possible that you are using two different version of TICSPro on the computers, I suggest downloading the most up-to-date version from the TI website onto both of them so you have the same starting point.

    The setting for CAL_CLK_DIV shown is ok, setting "CAL_CLK_DIV = Div1, Fosc <= 200" can improve VCO calibration time.

    Thanks,

    Vibhu

  • 0
    Intellectual 340 points

    Hello. Dear Vibhu,
    thank you for your answer.

    After uninstalling "TICS Pro", I reinstalled "TICS Pro" on PC1, but the malfunction that turns yellow does not improve.
    PC1 and PC2 are the same version.
    Is there a way to improve it?(Is it because PC1 is a PC that has never connected USB2ANY?)

    Version 1.6.10.0
    Build Date:16-May-19
    Part Version:2019-3-29

    Is "CAL_CLK_DIV" a function to adjust the VCO calibration time?
    "CAL_CLK_DIV = Div1, Fosc <= 200" causes a lot of spurious.
    Set it to “CAL_CLK_DIV = Div4, Fosc <= 800” and use it (see file).
    If possible, I would like to improve other spurs a little more.

    Regards,
    Akihiko Yokouchi/

    Setting result.pdf

  • 0 in reply to akihiko yokouchi
    TI__Genius 11900 points

    Hello Akihiko-san,

    I suggest taking a look at https://www.ti.com/tool/PLLATINUMSIM-SW our PLL simulation software. You can see the effect of the spurs as you change your loop filter components and different mash orders. You may be able to optimize the jitter and spur magnitudes a bit more.

    The VCO calibration of the LMX2594 runs on state machine clock frequency, fSM. The clock source of the state machine clock comes from the reference clock. Maximum fSM is 200 MHz. Register R1, CAL_CLK_DIV, is used to set this frequency. fSM = fOSC / 2^CAL_CLK_DIV

    I am not certain what the issue is with your TICS Pro, the box turning yellow is just a warning and shouldn't prevent you from the same functionality.

    Thanks,

    Vibhu