Question/Issues
Answers
To resolve AD5292BRUZ-50 SDO readback issue and the power-up sequence for Robustness and stability.
The design recommendation the followings due to SDO readback, power-up sequence for reliability, robustness by ensuring the interface defaults to a known state during power-up to prevent IO damage, with a separate Vlogic power pin help to avoid these issues.
10k pull-up resistors is advised on the SPI interface, and the SYNC signal should default high then go low to align with the datasheet's power-up and synchronization requirements.
follow the power-up sequence section as recommended in the data sheet rev. H page 29. with careful control of the RESET timing and use of the Rdy line for detection and control to improve stability and robustness.