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ADV7619 IIC No Response

Question asked by on Oct 16, 2017
Latest reply on Oct 17, 2017 by mattp

We have encountered ADV7619 IIC Communication failure as many other threads in the Engineer Zone.

We checked the following design details:

1. The 28.63636 MHz Crystal oscillation works well;

2. The power supply to ADV7619 works well, and the power up sequence, i think, is ok;

3. The reset signal is asserted for about 500 ms before de-assert;

4. CS# Keeps low, and no control to it;

5. VS/FIELD/ALSB has a 1 K Pull down;

6. The E-Pad is connected to ground tightly.

The IIC Response no ACK when communication to ADV7619, while other I2C slave response is OK in the same IIC bus.


I can't find the cause about this, could you give some advise, thanks.