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Original question:

DP83TG720S-Q1: Daisy Chaining

DP83TG720S-Q1: Daisy chaining with multiple IP cameras and a computer

Mo Mizzi
Intellectual 290 points
Part Number: DP83TG720S-Q1
Other Parts Discussed in Thread: DP83869

I'm trying to make a network where a computer is connected to multiple IP cameras over single pair ethernet and daisy chained. I'm trying to understand what all I would need. 

I was going over your document over daisy chaining different nodes.

In this example, I see that it needs TWO physical layers and a processor which hosts the MAC layer. 

In the case of IP cameras, how do we incorporate them as a node here. Do we need an ethernet switch in place of the TMDS64GPEVM shown here, that can allow the IP camera and the 2 PHYs (or two DP83TG720s) ?

Additionally, I think we may also need a media converter to convert the 1000Base T1 to standard ethernet for the cameras .

Please correct me if I'm wrong. What would be right way to go about it?

  • 0
    TI__Genius 14006 points

    Hi Mo,

    So you want to add an Ethernet connection for 1 IP camera to the Host, Subsystem1, Subsystem N, etc. while keeping all the current connections?

    You would have to find a processor with additional MAC interfaces.

    If the Camera does not support 1000Base-T1 but only 1000Base-T, you would not need a media converter.  You could just replace the DP83TG720 with one of our Standard Ethernet devices which 1000Base-T support, such as the DP83867 or DP83869. 

    I'm not sure i'd be able to comment on incorporating a switch, as TI/our product line does not make any switches. 

    Best regards,

    Melissa