I use the adrf6806 for an Energy Metering application.
At first i can lock the 6806,but after several times i write command, I can not access the spi.
Next is my register set
also i can't find the out of REFIN from MUXOUT when R4=0x8A17E4;
I use the FPGA's 3.3V bank access the adrf6806's spi Logic. the rising spur exess 3.6V.
i guess the spur can breakdown the spi logic,how to verify it?