Before without the pulldown, it was floating up to logic high. I put a 12k pull down resistor on SDIO_2, which MISO. I like to use single bit serial 3 wire mode as shown on page 33. (I keep it LOW.) Is it correct to have the reset low? I have the following logic levels on these pins: I can’t read on MISO and I can’t get the chip to produce anything on the sinusoid outputs. I have the AD9958 of a board of my own design with 25MHz crystal temporarily hooked up to an Arduino.
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