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I2C protocol for ADV7401

Question asked by KevinW on Mar 3, 2015
Latest reply on Mar 3, 2015 by DaveD



I'm trying to communicate with ADV7401 chips in a design and I can't seem to get any acknowledgement from them.  I'm trying to use RealTerm and I can read from my other I2C devices no problem...  My design has two 7401s, one configured for 0x42 and the other for 0x40 via pull up/down resistors on the ALSB pin.


Does this chip require a special format for communicating?  I can't find anything helpful in the manual.


I noticed the ADV7181 needs a repeat start (  Is this standard for ADI devices?


Can someone recommend a better I2C utility?


Does ADI sell a programmer for their devices?


Thanks in advance.