Hello. In my application ADS1255 works with my microcontroller throught shrort cable with 200 Ohm resistors on data lines:
And i cant correcntly configure it via SPI. In different cases different registers may configures differently. And it is not rigidly dependent on specific external conditions, which complicates debugging.
For example I set low frequency SPI and try to set data rate to 2000 Hz. And oscilloscope does not show any problems with fronts, but DRDY toggling friquency still stay 30000 Hz. This is oscillogram of SCL and MOSI:
What i did wrong?
Analog and digital power on ADC is good. I checked it.