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HD3SS214: For DP2.1

Jeff YANG
Mastermind 6830 points
Part Number: HD3SS214
Other Parts Discussed in Thread: TMUXHS4612

Tool/software:

Hi,

Does TI have DP2.1 passtive mux as HD3SS214?

Thanks!

Jeff

  • 0
    TI__Guru**** 166601 points

    Jeff

    We are planning to release TMUXHS4612 this year which will support DP2.1 UHBR20.

    Thanks

    David

  • 0 in reply to David (ASIC) Liu
    Mastermind 6830 points

    Hi,

    May I know it can using HW select? or it need I2C control?

    Other schedule quesiton I will ask in email.

    Thanks!

    Jeff

  • 0 in reply to Jeff YANG
    TI__Guru**** 166601 points

    Jeff

    The MUX is controlled by HW select, it does not have I2C control.

    Thanks

    David

  • 0 in reply to David (ASIC) Liu
    Mastermind 6830 points

    Hi David,

    If we needs using HD3SS214 first come, first served. Need to auto detect plug and unplug if connected simultaneously. Currently prioritize hardware control display without going through FW.

    Is it possible to achevice? or we needs SoC send GPIO to control aux_sel and dx-sel?

    Thanks!

    Jeff

     

  • 0 in reply to Jeff YANG
    TI__Mastermind 27800 points

    Hey Jeff,

    What speed of DP2.1 are you planning to use? The HD3SS214 only goes up to HBR3 (8.1 Gbps). If you are looking to do autodetect for plug and unplug, the HPD signal can be monitored to determine where a sink is plugged in. What can be done is connect HPD for channel A to the AUX_SEL and DX_SEL pins. This means when HPD is plugged in on channel A, data and aux will be sent across channel A. When channel A is not connected the default routing will be to channel B. However if both channel A and channel B are plugged in only channel A will receive data.

  • 0 in reply to Vishesh Pithadiya
    TI__Mastermind 27800 points

    Its better to use firmware to ensure logic is correctly done, and there is a good failsafe mechanism.

  • 0 in reply to Vishesh Pithadiya
    Mastermind 6830 points

    Hi Vishesh,

    We only support below 8.1Gbps, we have tried it can work with manual select input channel.

    Since our SOC can not support FW control, if using HPD with some logic schematic.

    If port-1 plug in show port-1, after port-2 plug in, switch to port-2.

    Do you have any reference design for this?

    Thanks!

    Jeff

  • 0 in reply to Jeff YANG
    TI__Mastermind 27800 points

    Hey Jeff we don't have any reference design, something like this may work for your design.

    but the issue is what will happen when both are plugged in?