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TMUXHS4612: spec check

GARETH OU
Guru 11375 points
Part Number: TMUXHS4612

Tool/software:

Hi

The schematics are all SMA connectors. Is there a DP connector? Also, are the MUX output signals, data, clk, and aux all directly connected to the DP connector with 0 ohm?

  • 0
    TI__Mastermind 35218 points

    Hi Gareth,

    I'm not sure I follow the question fully. You can use SMA for the inputs for evaluating or you can use a display port and route it as well. It depends on what you're trying to achieve. 

    Thanks,
    Rami

  • 0 in reply to Rami Mooti1
    Guru 11375 points

    Hi Rami

    So what you mean is that if I want to design 1 DP in and 2 DP out If we just replace all the SMA connectors in the recommended circuit with DP connector pins, will we no longer need to add capacitors between AUX or DP signals and MUX?

  • 0 in reply to GARETH OU
    TI__Mastermind 35218 points

    Hi Gareth,

    I didn't mention capacitors so I'm not sure where that understanding came from. What your connectors are don't change the requirements for the system. If it required AC coupling capacitors, which DisplayPort does, then they will need to remain.

    Thanks,
    Rami

  • 0 in reply to Rami Mooti1
    Guru 11375 points

    Hi Rami

    Can I add the DP capacitor only at position 1, or should I also add 2 and 3? Thanks

  • 0 in reply to GARETH OU
    TI__Mastermind 35218 points

    Hi Gareth,

    Either side is fine but ultimately the one you pick will be based on which DP sink/source Vio or Vcm (0 to 3.6V is the limit for this device)  doesn't meet the voltage requirements of the device. The AC coupling caps get the voltage to a level that the mux can handle. So if your CPU side has a bias that makes it too high, then put it on that side. 

    Thanks,
    Rami