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ADV7623 - I2C read issue

Question asked by vianpl on Sep 12, 2015
Latest reply on Sep 16, 2015 by JeyasudhaMuthuPerumal

Hi,

We're building a Linux board that interfaces with the ADV7623, and we've run into a pretty strange issue: we're unable, through the driver we're working on (and through any other mechanism), to read any device's register, even though we're able to write to it successfully (i.e. define the adresses of the i2c subclients). Having had a look at it through the oscilloscope it seems that the chip isn't returning an ACK, nor data after receiving the read operation.

Is there any known issue around that? Maybe a configuration parameter that we missed...

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