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?
If the ADV7513 DDC signals are not connected to DDC signals of the monitor, you will not be able to support HDCP encryption to the monitor or read the EDID of the monitor. Your board will not be compliant with the HDMI standard.
With that said, the ADV7513 should be able to transmit data to the monitor as long as you ensure the HPD pin is pulled high when your board is connected to the monitor.
Is ADV7513 HPD pin pulled high when connected to the 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