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LMX2492: Is there a way to reset or set the mash seed for this part?

Part Number: LMX2492

I sometimes do not get repeatable spur behavior on the eval board while switching through a sequence of different settings for the FRAC_ORDER, FRAC_DITHER, FRAC_NUM, and FRAC_DEN.

When I return to my initial settings, the spur behavior is sometimes not identical to the initial state.

I suspect that the seed value is not the same anymore, but I can't find how to change the seed value in the datasheet.

Is there a way to reset or set the mash seed? Is the only way to reset the seed is to do a software reset on register 2?

  • Hi K,

    I read through all the registers, including hidden registers, there is no specific register to reset the MASH. A software reset can reset the MASH and everything, so you have to program all the registers again.