The sampling rate of ADC/DAC of the SNOWLeo SDR

Hi all,

I am working on SDR using SNOWLeo SDR.

I want to know the sampling rate of ADC/DAC of the SNOWLeo SDR. But I cannot find this information anywhere.
The introduction of SNOWLeo SDR page just said “Digital interface to baseband with integrated 12 bit D/A and A/D converters”.
And I found the maximum sampling rate is 40MSps in the datasheet of baseband chip.
But I don’t need fast sampling rate.

Is there any comment such as how to control the sampling rate or what is the current sampling rate about this ?

Thank you.

-Yongtae Park