I have a hardware problem now.
I use ADAU1452 to receive datas from ADC in another board, ADC refer clocks and datas. The ADC board and 1452 board connect through a FPC line.
All the system can work at most time, however I find that when I touch the connect line, 1452 will easily work wrong, all the audio become noise.
When it become wrong, I touch it continue, and it may sometimes return to normal.
My question is how to prevent the disturb outside which cause 1452 wrong?