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Original question:

TMUXHS4212: PHY interface "USXGMII"

TUSB1042I: PHY interface "10G-USXGMII" compatible MUX

Nikunj Mehta
Prodigy 170 points
Part Number: TUSB1042I
Other Parts Discussed in Thread: TMUXHS4212, TMUXHS4412, SN65LVCP114, TMUX136

Tool/software:

Dear Team,
i refer "">e2e.ti.com/.../tmuxhs4212-phy-interface-usxgmii"  Thred ,
can we use "TUSB1042I" IC for mention use case ?
The Multiplexer is combining SFP and 10G Serdes “USXGMII” signals.
at the moment we use "TMUX136MRSER" for SGMI signals 1G Serdes .
is there any SWITCH  also avalabe in TP for 10G Serdes ?

Regards,
Nikunj

  • 0
    TI__Mastermind 38755 points

    Hi Nikunj,

    Are you looking for a switch/mux, or a redriver mux? The TUSB1042I is a USB3.0 redriver mux which can only support USB3 signaling, so I would not recommend using that device for this application.

    Like the referenced post recommends, I would recommend the TMUXHS4212 or the TMUXHS4412. The main concern in using those would be to make sure the common-mode voltage does not violate the datasheet.

    I will re-assign this thread to the mux team, if you are looking for specifically a redriver mux, I can see if there is anything we have that supports that.

    Thanks,

    Ryan

  • 0 in reply to Ryan Kitto
    Prodigy 170 points

    Hi Ryan,
    Thank you for the update,
    and please check for "analog switch -TMUX136MRSER for 10G compatible part ".
    Regarding the voltage level - DC Common Mode Voltage Max 3.6 . and suggested part mention for VCM = 3.3V its 1.8V , do you have any other part ? 
    may be analog switch ?
    Regards,
    Nikunj

  • 0 in reply to Nikunj Mehta
    Prodigy 170 points

    Hi Ryan, 

    It seems that "SN65LVCP114" support the voltage level. In my view, using the SN65LVCP114 component might be overdesigning because a redrive is not required for the PCB trace for serdes smaller than 90 to 100 mm. Is there any other component that comes without signal conditioning and redriver?

    Regards,

    Nikunj

  • 0 in reply to Nikunj Mehta
    TI__Mastermind 35628 points

    Hi nikunj,

    TMUX136 only goes up to 6GHz so it wouldn't be a fit. The switches Ryan mentioned above would be the recommendations. These wouldn't come with a redriver. They would be passive switches.

    Thanks,
    Rami