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Observer rmm
Observer
353 Views
Registered: ‎11-05-2018

reconfiguring lmk clock with LMX2594ClockConfig

So I initialize my LMX2594 to one clock rate and set up my ADCs/DACs and they all work fine.

 

However, after I have already initialized it and I want to reconfigure I call LMX2594ClockConfig() again with a new rate, and now when I set my mixer settings they are mistuned (by a ratio of the first clock rate to the second).

 

Do I have to reset all of my tiles (PG269, page 106-107) in order for the power up sequence to pass the new clock information to the tiles?

 

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3 Replies
Community Manager
Community Manager
293 Views
Registered: ‎08-30-2011

Re: reconfiguring lmk clock with LMX2594ClockConfig

Hi

Usually we need shutdown and startup the tile if clock setting changed.

Have you ever tried shutdown/startup the tile and can this help make your new setting works fine? I am wondering if this cannot help the new rate work fine that might have some additional settings needed.

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Observer rmm
Observer
256 Views
Registered: ‎11-05-2018

Re: reconfiguring lmk clock with LMX2594ClockConfig

Unfortunately using Xrfdc_Shutdown() and Xrfdc_StartUp() did not help.

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Community Manager
Community Manager
197 Views
Registered: ‎08-30-2011

Re: reconfiguring lmk clock with LMX2594ClockConfig

Hello @rmm 

Sorry for the delayed reply. I was on Vacation for a week.

Have you tried API function XRFdc_DynamicPLLConfig  after you change the LMK2594 output clock with a new frequency?

You can set your new reference clock frequency and sampling clock frequncy with this function and then reset the whole tile.

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Don’t forget to reply, kudo, and accept as solution.
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如果提供的信息能解决您的问题,请标记为“接受为解决方案”。
如果您认为帖子有帮助,请点击“奖励”。谢谢!
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