AnsweredAssumed Answered

DAQ2 clocking

Question asked by abolide on Mar 31, 2016
Latest reply on Mar 31, 2016 by CsomI
Branched from an earlier discussion

Hello rejeesh,

i came from Jinan university of China, now we are working with zc706 and DAQ2. i am quite confused about the crystal clock input of the ad9523 in DAQ2, please help.

1,From the following URL, there is the 125Mhz crystal provided to ad9523.

https://wiki.analog.com/resources/eval/user-guides/ad-fmcdaq2-ebz/hardware

2,But in the following URL,there is "Crystal generates a fixed clock frequency of 250MHz."

https://wiki.analog.com/resources/eval/user-guides/ad-fmcdaq2-ebz/hardware/functional_overview

On the PCB board, it's 125Mhz crystal. So Is the clock provided to FMC zc706 still 500Mhz? of half of that?

 

Thanks!

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