Hi CT, The confirmed sequence is as follows: 0x000B to 0x04 address 0x0002 to 0x03 address // select register bank 1 0x0002 to 0x92 address 0x0604 to 0xC5 address Yes, PHA and POL being 0 is correct for SPI. Could you please share your schematic of the ADC so I may confirm all connections are correct? Also could you please go through these debug steps: Measure AVDD_5V, IOVDD, VDD_1V8, and REFIO using a DMM to ensure all supplies are as expected. Apply SMPL_CLK Write the initialization sequence as I shared above. Could you please share oscilloscope screenshots (of all digital signals)? Were any supplies connected to the device previously that exceeded the max limits? Best regards, Samiha
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