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ADAU1452 connect with other device in another board

Category: Hardware
Product Number: ADAU1452


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?