https://www.st.com/resource/en/application_note/an4541-emi-filters-for-sd30-card-highspeed-sd-card-protection-and-filtering-devices-stmicroelectronics.pdf https://docs.qualcomm.com/bundle/publicresource/topics/80-PV086-5P/SDC2%20external%20SD%20card%20routing%20constraints.html