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Configuring Interpolation filters in FMCOMMS1

Question asked by madhan on May 26, 2015
Latest reply on Jun 9, 2015 by MiTfreak



I am working on configuring AD-FMCOMMS1 through zed board.

For my application i need to configure all the 3 half band interpolation filters(HB1,HB2 and HB3).

I used the fallowing commands in main for configuration.


"ad9122_write(AD9122_REG_HB1_CTRL, hb1);

ad9122_write(AD9122_REG_HB2_CTRL, hb2);

ad9122_write(AD9122_REG_HB3_CTRL, hb3);"


Here i used the above commands to configure the interpolation filters at run time for

selected bands. For few times they configured properly, but for few times they are

not configured properly because of which i am getting faulty output spectrum.


Can you tell me why they are not configured properly for few times for the same modes?

Is there any special mechanism in configuring HB1,HB2 and HB3 filters dynamically?