I'm sorry about my poor english skill.
I'm user of AD9910.
I want to fast frequency sweeping.
I read datasheet, then I learned about DRG(Digital Ramp Generator) and RAM mode.
They seems so fast enough but I wonder something about that.
I want to control frequency sweep by external pin(etc, I/O Update and so on...) pulse.
About RAM mode,
I/O Update pin acts like trigger signal, then 1024 word go to DDS core automatically.
Could I control that each frequency output by external hardware pin?