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AWR2243: osc_clkout output parameters

Michal Kusmirek
Prodigy 40 points
Part Number: AWR2243


How to estimate tolerance of OSC_CLKOUT signal? I know frequency tolerance of crystal,  but I have to calculate/find in datasheet output signal parameters (tolerance, jitter, t-rise, t-fall).

  • 0
    TI__Guru 58035 points

    Hello Michal,

    Are you looking at feeding the OSC CLKOUT of one AWR2243 device as a clock to the other AWR2243 device?  

    The frequency tolerance of the OSC CLKOUT would be directly linked to the XTAL Freq error. This is speced at 200ppm for AWR2243 device.

    The rise/fall is not very critical since even sin wave would be acceptable.

    Regards,

    Vivek 

  • 0
    Prodigy 40 points

    Hello,
    I asked about output signal. I know crystal parameter (ppm), so I would like to calculate (or find out some information) about tolerance of output signal (OSC_CLKOUT). I mean function f(crystal parameters).
    Example: There is  crystal 40MHz and 100ppm connected to AWR2243 (CLPK and CLKM pins). What is tolerance of output signal in this case? (OSC_CLKOUT)

  • +1 in reply to Michal Kusmirek
    TI__Guru 58035 points

    Hello Michal,

    The frequency of the OSC CLKOUT signal is exactly the same as that of the XTAL clock. If the XTAL clock has 100ppm error, the same would be seen on the OSC CLKOUT.

    Regards,

    Vivek