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DDS AD9910- switching from single tone to ramp generation mode

Question asked by bibi242 on Nov 18, 2015
Latest reply on Nov 18, 2015 by bibi242

Dear All

In my application I want to use AD9910 to generate LFM (frequency sweep from 300-310MHz) and Single tone  317MHz based on a square wave input 10KHz. For eg. 20us I need to generate ramp and 80us I need to generate tone.

 

For this I will be loading FTW for 317MHz in Profile0

and set DRG limit registers for 300 and 310 MHz and all required parameters for ramp generation.

 

My doubt is how can I toggle between RAMP and TONE.

 

Can I change CFR2[19] which is digital ramp enable/disable periodically to do this.

 

Please give some suggestions on this

 

Thanks

Vipin

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