ADV7611 & ADV7513 - DDC lines

Hi,

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?

Regards,

Sivakumar

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  • 0
    •  Analog Employees 
    on May 12, 2015 6:50 PM

    Hi Sivakumar,

    If ADV7513 DDC signals are not connected to the HDMI transmit connector, it means that the ADV7513 will not be able to read the EDID of the sink (display). Therefore, your board will not know what type of signal the sink can handle. Unless you have a closed system (which does not require HDMI compliance), your board must be able to read the EDID of the sink (display).

    If ADV7611 DDC signals are not connected to the HDMI receive connector, it means that the source device will not be able to read your board's EDID. Furthermore, in case you are planning to support HDCP, the source device will not be able to do HDCP since HDCP requires DDC communication. Unless you have a closed system (i.e. HDMI compliance is not required), the source device will need to be able to read the EDID of your board.

    -Matt

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  • 0
    •  Analog Employees 
    on May 12, 2015 6:50 PM

    Hi Sivakumar,

    If ADV7513 DDC signals are not connected to the HDMI transmit connector, it means that the ADV7513 will not be able to read the EDID of the sink (display). Therefore, your board will not know what type of signal the sink can handle. Unless you have a closed system (which does not require HDMI compliance), your board must be able to read the EDID of the sink (display).

    If ADV7611 DDC signals are not connected to the HDMI receive connector, it means that the source device will not be able to read your board's EDID. Furthermore, in case you are planning to support HDCP, the source device will not be able to do HDCP since HDCP requires DDC communication. Unless you have a closed system (i.e. HDMI compliance is not required), the source device will need to be able to read the EDID of your board.

    -Matt

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