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Observer klafond
Observer
2,854 Views
Registered: ‎02-15-2016

MMCM output clock jitter and phase error

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I was able to run the TCL commands below, and got the results shown, but I don't see any documentation on units or format of the numbers. I would hazard a guess these are in pico seconds and degrees, is this correct?

 

get_property CONFIG.CLKOUT1_JITTER [get_ips clk_wiz_0]

result: 130.958

 

get_property CONFIG.CLKOUT1_PHASE_ERROR [get_ips clk_wiz_0]

result: 98.575

 

Thanks,

 

Kerry

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Xilinx Employee
Xilinx Employee
5,109 Views
Registered: ‎02-14-2014

Re: MMCM output clock jitter and phase error

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Hello @klafond,

 

Both values are reported in pico seconds.

Regards,
Ashish
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2 Replies
Xilinx Employee
Xilinx Employee
5,110 Views
Registered: ‎02-14-2014

Re: MMCM output clock jitter and phase error

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Hello @klafond,

 

Both values are reported in pico seconds.

Regards,
Ashish
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Give Kudos to a post which you think is helpful and reply oriented.
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Xilinx Employee
Xilinx Employee
2,815 Views
Registered: ‎04-16-2012

Re: MMCM output clock jitter and phase error

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Hi @klafond

Both jitter and phase error are in ps.
See this answer record: https://www.xilinx.com/support/answers/37975.html

Thanks,
Vinay
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