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ad9914 Direct parallel programming

Hello Engineer Zone community 
It is my first post here so i hope every thing will go fine. Am using ad9910 DDS evaluation kit, i want to generating a single freq using DIRECT PARALLEL PROGRAMMING using external MCU.

I have made the following steps but no success:
1-Set function pins into 0100
2-reset registers into their initial value by applying a pulse on master_reset pin
3-sending the 32 bit of tuning word 
4-applying a io_update signal 

did i miss any thing?


any help?
[edited by: Hosam Elfakher at 9:38 PM (GMT 0) on 7 Jun 2019]