I use 25M clock input dds and internal PLL output 2.45M system clk. My goal is to output 90 single tone wave manually. But i should first output one wave correctly. So i make some simple test first.
At first, i use serial program and profile mode to output a sine wave. it works right. So i plan to use direct mode to test whether it works right.
Because i have to use internal PLL, so I should setup DDS core and then change to direct mode. However, it doesn't work right.
Here is my setup process.
count some time then
I want to know what my problem is. so please help me to figure it out. thank u.