How to change frequency of sine wave on FPGA IO334?

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Mitali Murkar
Mitali Murkar on 30 Sep 2021
Commented: Mitali Murkar on 23 Nov 2021 at 13:12
I want to generate sine wave on FPGA and below is my model on IO334. I want to change the frequency of signal when HDL code generated is already on taget machine(speedgoat FPGA). How can I manipulate the frequency?

Answers (1)

Bharath Venkataraman
Bharath Venkataraman on 30 Sep 2021
Edited: Bharath Venkataraman on 30 Sep 2021
One way to do this is by using the NCO HDL Optimized block and change the phase increment. Here is an example of how to use the block to generate a sine wave.
The other option is to have the build a counter using the delay and add blocks. The step size of the counter will need to be programmable, decided by an input port. Changing this step will change the input to the sine block, hence changing the frequency of the sinve wave emitted.
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Mitali Murkar
Mitali Murkar on 23 Nov 2021 at 13:12
Just to clarify the attached model is generated model only from HDL workflow.

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