AnsweredAssumed Answered

ADV7612 measurement registers not stable

Question asked by wallman16 on Mar 28, 2012
Latest reply on May 15, 2012 by vito

Hi ,


We have a system set up HDMI signal -> ADV7612 and the proble is as follows ,

"Vertical Sync Filter" in the IO Map 0x6a is not locked and we are not able to get the  measurement  values .


During this the Output video has no problem but the Values of V measurement (0x09、0x0a FIELD HEIGHT) in the HDMI Map are not valid values .

This problem is seen when the input is HDMI . When the input is WUXGA Class DVI then we don't see this issue .


If we set "HDMI Map 0x4c 0x00 "instead of the recommended "HDMI Map 0x4c 0x44"

as in Recommend Settings(ADV7612_RecSettings_1-2_021111.pdf) we at least dont see this issue on 1080p60 and 1080i60 inputs .


Please let me know if you have suggestions with regards to this issue .


Thanking you

With best regards and wishes