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ADF4159 software, PFD delay and ABP sel, and integer boundary spurs

Question asked by johnpritchard on Jul 15, 2013
Latest reply on Jul 15, 2013 by rbrennan

Dear Sir

 

I have found that an integer boundary spur seems to varies with 'PFD Delay' and 'ABP Sel', as given in the evaluation board software Revision 4.7 November 2012.  Please can you explain what is the setting 'PFD Delay' and what is the setting 'ABP Sel', they don't seem to appear on the datasheet? What registers do these parameters affect? How do I access them using our own software interface to the device?

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