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How to write PLL 5 bit word in AD9959 FR1 register from 4 to 20?

Question asked by anurag250891 on Jun 1, 2018
Latest reply on Jun 21, 2018 by mcee

Hello Everyone,


I am trying to interface AD9959 with microcontroller. Only one thing I am not able to understand is that, How do I write 5 bit PLL divider ratio in bits from 4 to 20 decimal value?


If I can get an proper example to understand, how to write those 8 bits [23:16]? That would be a great help for me.


As in the software I cannot see register mapping values. It is getting quite difficult to understand.