I have successfully configured the AD5932 in automatic frequency ramp mode. The ramp is started periodically by a single pulse at the CTRL pin and this works in most cases (99% of times).
But sometimes (1% of times) the ramp is not started correctly! It seems like the AD5932 recognizes the CTRL pin because the start frequency is loaded correctly but the ramp is not started afterwards!
I do not reconfigure something over SPI during run-time (FSYNC is kept high). The Interrupt and Standby pin are not used (kept low) during run-time.
Are there any known issues with the AD5932 device or do you have any advises? Thanks!