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Notebook HDMI or Type-C Port Support both Source/Sink Video

Jim CHEN
Expert 4795 points

Other Parts Discussed in Thread: TUSB544, HD3SS460, HD3SS214, HD3SS215, TMDS171

Dear Team,

My customer would like to use the LCD panel as the second monitor for the external gaming system like Sony PS4.

So they want to use HDMI or Type-C port to achieve this feature. HDMI and Type-C need to support both video source role and video sink role.

The spec are as below: 

LCD panel's interface is eDP 2.7Gbps(HBR) or 5.4Gbps(HBR2).

HDMI Signal support HD, FHD and 2K.

CPU WHL-U support HDMI1.4b 

The simplified block diagram are shown as below. 

But we would like to know how many MUX is needed for this application? And how to control and switch these MUX? 

Could you please help to clarify and share some experience with us?

Thank you.

Jim

Type-C Application

HDMI Application

  • 0
    TI__Guru**** 185551 points

    Jim

    Please see the proposed solution for both Type-C and HDMI application.

    For Type C application

    TUSB544 will be responsible for the switching of DP direction

    HD3SS460 will be responsible for the MUXING of the USB and DP into Type C

    HD3SS214 will be responsible for the switching between Type-C and CPU

    Please see proposed HDMI solution

    First HD3SS215 will be responsible for the HDMI direction switch between PS4 and LCD monitor

    Second HD3SS215 will be responsible for the HDMI switching from the CPU and the signal coming from LCD_Monitor/PS4

    HD3SS214 will be responsible for the switching between HDMI and DP going into the NB LCD

    Please note HD3SS214 and HD3SS215 are FETS switch, you may need additional re-driver or re-timer such as TMDS171 or DP149 to compensate for the loss, skew going through these FETS switch.

    Thanks

    David

  • 0 in reply to David (ASIC) Liu
    TI__Expert 4795 points

    Hi David,

    Thanks for the suggestion.

    I try to make the block diagram again. Could you please help to take a look? 

    Please let me know if any error.

    6332.Block Diagram.pptx

  • 0 in reply to Jim CHEN
    TI__Guru**** 185551 points

    Jim

    The block diagram looks OK. 

    For the HDMI connector proposal, my concern is whether the system will pass the HDMI impedance compliance given the number of components in the HDMI path, so my recommendation is to go with the Type C proposal.

    Thanks

    David