Thank you for your respond! I have read that forum post yet. I think I met the similar problem. Now, I just use continuous STDI mode to get INTLCD, and one-shot mode to get ohter four params. That will reduce the error rate of INTLCD. But I still don't understand which causes the problem.
I have read HW handbook again. After I set Chip Reset according to ADV7441A EDID_Rev0.pdf, I set the ADC0/1/2/3 to select input pins, then I use the one-shot mode to get STDI params. will some other registers be set before use STDI one-shot mode?