Other Parts Discussed in Thread: AFE5809,
Hi,
I'm using AFE5809 Demodulator through GUI.
I want to achieve the following:
A1. I would like to downconvert signal with 350 kHz.
We are using formula: Downconversion frequency = (N*Fs)/2^16 , where Fs is 40 MHz (onboard clock of AFE5809EVM). The value of N is thus, 573 in decimal, which is put in GUI. Is this value correct?
A2. I would like to decimate by factor of 32, so M=32 and resulting sampling would be 40/32 = 1.25 MHz.
To do this, decimation filter coefficients has to be loaded in GUI. From page 73 of datasheet, I would have to load 256 coefficients and each coefficient is 14 bit wide.
We have 512 coefficients in decimal for FIR filter.
Could you please tell how to upload these coefficients in a proper way through GUI? I can email you the text file so you can have a look at those coefficients.
Thanks!