What will happen if i not connected the DDC lines of ADV7611 and ADV7513 to connector?
Whether without DDC lines the ADV7513 transmit the data to external monitor?
HPD must be connected to the HDMI connector. In hardware user guide its mentioned like 10Kohm Pull down resistor is recommended to ensure whether '0' voltage is present whenever no sink(Display/Monitor) is connected.
Please refer here HPA_A and HPA_B Output Specification Clarification