I have a issue with the start-up time of the ADAU1772 “CM Voltage” (AVDD/2).
This voltage take approx. 150ms on the EVAL Board but approx. 500-600ms on my design.
The only different is the clock (24.576MHz on my design).
I used the same value of CM capacitor 10uF.
If I compare the rise time the value is equal up till the EEPROM load the ADAU.
What register setting can cause this changes? Or what else can have inference on the start-up of the CM voltage?
CH1= I2C, CH2= Vcm Boot, CH3=3V3, R1= Vcm not Boot