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Can not read back the infoframe registers of ADV7619

Question asked by Hahorse on Mar 6, 2014
Latest reply on Mar 6, 2014 by GuenterL

We are now use the ADV7619 HDMI receiver.I read the infoframe map(0x7C),0x01/0x02/0x03/0x04/0x05...the read back value is always 0x00.But the audio and vedio output from the ADV7619 is correct.Please someone tell me why the value I read back is constant 0x00?