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TDP142: [IEC]{2025 AIO] Solutions Recommendation for DP++ to DP and DP++ to HDMI

Gary Chang
Prodigy 490 points
Part Number: TDP142
Other Parts Discussed in Thread: TDP158, TDP0604, TMDS1204, , TDP2004, TDP1204

Hi teams,

Please kindly help recommend the solutions of our reDriver for DP++ to DP or DP++ to HDMI. (From CPU to connector)

Now they are considering PS8463E for their application but I would like to propose to them with our redriver solutions.

For below two conditions, which part numbers can support below conditions with sam IC?

Potential solutions: TDP142, TDP158, TDP0604, TDP2004, TMDS1204? 

1. DP++ to DP

2. DP++ to HDMI

Noted:

DP spec: DP conn for DP1.4a HBR3

HDMI spec: unknown or similar to the spec listed as PS8463E( TMDS up to 6Gbps)

B.R.

Gary

  • 0
    TI__Mastermind 22995 points

    Hey Gary,

    Here is a breakdown off the parts listed:

    TDP142:  8.1Gbps DP1.4 redriver (DP/ DP++ -> DP)

    TDP158: 6Gbps dual mode DP++ 1.1 to HDMI 2.0 redriver (DP++ -> HDMI)

    TDP0604:6Gbps dual mode HDMI 2.0 redriver (DP++/ HDMI -> HDMI)

    TDP1204:12Gbps dual mode HDMI 2.1 redriver (DP++/ HDMI -> HDMI)

    TMDS1204:12Gbps dual mode HDMI 2.1 redriver (DP++/ HDMI -> HDMI)

    The TDP0604 is also pin to pin with TDP1204 in case you want to go up to HDMI 2.1. 

  • 0 in reply to Vishesh Pithadiya
    TI__Prodigy 490 points

    Thanks Vishesh,

    Can you understand below schematic? Customer say they would not use the below schematic when using PS8463E. However, they would need the below circuit with our reDriver. Do you think it make sense?

    B.R.

    Gary

  • 0 in reply to Gary Chang
    TI__Mastermind 22995 points

    Hey Gary,

    This circuitry is used to determine in a HDMI or DP sink is plugged in. Aux communication is done at 1Mbps Manchester encoded signaling, and DDC is I2C communication. Depending on the type of source the customer is using this circuitry may or may not be needed. If the source the customer is using has an AUX channel that supports DDC, then this circuitry is not necessary, but if the customer is using a source with separate DDC and AUX lanes then a switch will ne necessary to route the AUX traffic to AUX lanes, and DDC traffic to DDC lanes.

    My question to the customer would be if they are using a source with DDC capabilities on the AUX channel?

    The PS8463E has an internal mux to control the DDC and AUX traffic, and none of the TI redrivers have this.