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ADV7441A port I2C not acknowledge slave address

Question asked by AlphaMil on Aug 13, 2012
Latest reply on Aug 14, 2012 by GuenterL

Good afternoon.

I start to use ADV7441A. The applied scheme is resulted on the attached file.

At attempt to write data in registers, but the microcircuit does not confirm the address. For record I use address h40, I write in the register h0F value h24 (I.e. I set a microcircuit in PowerDown).

In what there can be a reason? Signals I look an oscillograph.