excuse me, I am a student from Wuhan University, China. I am using AD9172 to achieve 1GSPS waveform output. I have the following problems:
the demo project is use as mode 4, and I can change the Data Rate and Interpolations successfully.
But when I use mode 8 or 9 to product 1GSPS data wave, the output is wrong.
when I use mode 8, DDS 40MHz, the output is
when I use mode 9, DDS 40MHz, the output is
and the big wave is 40MHz, the small wave is nearly the hmc7044 input AD9172 clock.
here is my code(mode 9)
hers's my project
Thank you for your answers!