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DS90UB949-Q1: DS90UB949-Q1:

Part Number: DS90UB949-Q1

We used ds90ub949 transmit car informationt to instrument,the DS90UB948 as a receiver  in the instrumnet,the instrumnet pixel is 1920x720,now the instrumnet can display,but not display  OK ,below picture is the OK and NG.the left picture is not used DS90ub949. I found the lock pin of DS90UB948 is high.

we not used EDID CHIP in the product.

please tell me why instrument not work normally