https://devzone.nordicsemi.com/f/nordic-q-a/112013/using-spi3-on-nrf9161I am using PHYTEC link board eth ( https://docs.zephyrproject.org/latest/boards/shields/link_board_eth/doc/index.html ) as ethernet shield using SPI on nRF9161. I updated the VDD rail voltage to 3.3V using the board configurator and also verified usingen-USTelligent Community 13Wed, 12 Jun 2024 14:00:47 GMThttps://devzone.nordicsemi.com/thread/488525?ContentTypeID=1Wed, 12 Jun 2024 14:00:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:78d71413-5a10-4fd0-b84d-33f6a1c895c4Kenneth<p>Hello,</p> <p>Not tried the example, but in general timeout means that the spi was not able to drive the pins as expected (likely the CLK pin is the problematic one), this typically can happen if something externally is preventing the pin(s) to go logic low and high.&nbsp;</p> <p>So can you try different pin(s) or connect a logic analyzer to check if there is any data as expected?</p> <p>Kenneth</p><div style="clear:both;"></div>