i'm currently using the ADV7842 in a design that is being used for both analog and digital video inputs. I'm having an issue where the ADV7842 cannot detect properly with a MacBook with the following formats: 1920x1080 60Hz video. I have successfully been able to detect video formats with other formats (for example 800x600 60Hz, 1280x1024 60Hz, and 1600x1200 60Hz). Only 1080p 60Hz fails to detect properly.
I am using a MacPro 4.1 as detailed below:
my particular model is using the NVDIA GeForce GT 120 GPU and is the 2.66GHz Xeon Quad-Core
The adapter that I am using from the Mini DisplayPort to VGA adapter is detailed below:
I tried the EVAL-ADV7842 and the result is that the video is shifted
I am using CP registers 0xB1, 0xB2, 0xB3, 0xB4, 0xB5 to determine input resolution.
Do you have any suggestions on what could be wrong?