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Dual Link TMDS redriver

Arthur Lancelyn Green
Prodigy 30 points

Other Parts Discussed in Thread: SN75DP130, TMDS442, TMDS181

Is there a dual link equivalent of SN75DP130? If not, how can the SN75DP130 redriver be used in dual-link DVI applications? The device can drive four lanes of TMDS (one clock, three data) but for dual link DVI we need 7 lanes (one clock, 6 data).

I'm concerned that if I just use two of these devices in parallel, there may be too much inter-lane skew between lanes that go through different devices. From the datasheet, I can't rule this out as being a problem because there is no min. or max. propagation delay for the differential signals.

Can anyone help?

Thanks,

Arthur

  • 0
    TI__Guru* 76130 points

    Hello,

    The DP130 is not designed for TMDS signals.

    Please  see the TMDS442 for TMDS dual link applications.

    Regards.

  • 0 in reply to Elias Villegas M.
    Intellectual 490 points

    TMDS442 is good up to 2.25 Gbps. Is there a successor to the chip that can support up to 6Gbps TMDS. Or does TI have any TMDS re-driver/equalizer supporting up to 6Gbps?

    Thanks

    Nikko

  • 0 in reply to Nikko Li
    TI__Genius 9315 points
    Hi Nikko,

    We are close to release TMDS181 it will be done by the end of September.
    The TMDS181 is a digital video interface or high definition multimedia interface retimer. The TMDS181 supports four TMDS channels, Audio Return Channel, and Digital Display Control interfaces. The TMDS181 supports signaling rates up to 6Gbps to allow for the highest resolutions of 4k2k60p 24 bits per pixel and up to WUXGA 16-bit color depth or 1080p with higher refresh rates. The TMDS181 can be configured to support the HDMI2.0a standard. The TMDS181 will automatically configure itself as a redriver at low data rate or as a retimer at high data rates.

    Samples can be ordered now through your TI sales representative.

    Regards.
    JC