At Vref1 , 2.5V measured . But this port is 1.8V. I also viewed the simmilar issue at E2E. But I could not fine the correct answer.
I attatched my schematic. There are 5 block for PCA9306. At 1.8V point, 2.5V measured. VREF2 and EN connected to 3.3V via R 220Kohm.
I've done a lot of reviews. But it did not work out.
I would appreciate it if you could tell us why this is happening.