https://devzone.nordicsemi.com/f/nordic-q-a/43472/nrf52832-spim-esb-signal-noiseBear with me, this might be complicated. I&#39;m currently transmitting some audio data via ESB. The data gets passed as followed: Microphone (PDM) -&gt; nRF52 (1) (SPIM) -&gt; nRF52 (2) (SPIS/ESB1) gets sent to nRF52 (3) (SPIM/ESB2) -&gt; nRF52 (4) (SPIS/I2Sen-USTelligent Community 13Wed, 13 Feb 2019 08:56:16 GMThttps://devzone.nordicsemi.com/thread/170785?ContentTypeID=1Wed, 13 Feb 2019 08:56:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:789b1887-4445-49f1-847d-05ff68839cdcJared<p>It&#39;s not recommended to use P0.22 - P0.31 for high frequency operations as they are close to the Radio power supply and antenna. Could you change the pins that you have assigned for SPIM and see if the issue persist.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/170721?ContentTypeID=1Tue, 12 Feb 2019 18:19:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:49609039-4623-455f-a5a7-bfd81c874f89DGraham<p>The SPIM is assigned to the following pins:</p> <p>MISO - P0.30</p> <p>MOSI - P0.28</p> <p>SCK - P0.03</p> <p>CS - P0.29</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/170403?ContentTypeID=1Mon, 11 Feb 2019 14:28:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:360d110c-7131-46cb-821d-3ff150ff70d4Jared<p>Hi,</p> <p>Which pins are SPIM assigned on nRF52 (3)?</p> <p>Best regards</p> <p>Jared&nbsp;</p><div style="clear:both;"></div>