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ADV7611 fundamental questions for usage

Question asked by usaghi on Jun 1, 2012
Latest reply on Sep 24, 2013 by vito


As a local ADI distributor, we have asked questions about ADV7611 from a customer.

He is referring following documentations which are on this EngineerZone.






Questions are,

ADV7611_RecSettings_1-2_031111.pdf shows in page.5, 1.2 Recommended Initialization Settings, for example,



68 6F 0C ; ADI recommended setting

68 85 1F ; ADI recommended setting

68 87 70 ; ADI recommended setting

68 57 DA ; ADI recommended setting

68 58 01 ; ADI recommended setting

68 03 98 ; Set DIS_I2C_ZERO_COMPR 0x03[7]=1

68 4C 44 ; Set NEW_VS_PARAM 0x44[2]=1


Q1) Do you have any documents to explain these command protocols ?

We can assume at first line, the first hex value x68 indicates HDMI,

the second hex x6F is for address from the top of HDMI,

and the third hex 0C is for value at the address indicated before..,

but are they correct ?


Q2) The Sixth line shows "Set DIS_I2C_ZERO_COMPR 0x03[7]=1",

however we couldn't find any description in above documents what is DIS_I2C_ZERO_COMPR.

Please let us know about this parameter, or any docs to be referred.


Q3) The address x6F on the first line, for example, is not shown any at register maps on  

ADV7611_Software_Manual_pr0.pdf. How do we understand it seems to be hidden in manual and how handle them ?


Q4) The customer is acutually intending to receive only DVI stream.

However, above documents are almost only mentioning HDMI, so are they able to apply also for DVI ?

If you provide any attention or comments in case of DVI, they would be very much appreciated.


Thank you very much for your helps and support, as always.