• State Resolved
  • Locked Locked
  • Replies 6 replies
  • Subscribers 32 subscribers
  • Views 1204 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

SN65DP159 - Could the device be used as HDMI retimer ?

Kawai
Guru 19775 points
Other Parts Discussed in Thread: SN65DP159, SN75DP159, TMDS181

Hi Team,

Please allow me to ask you two questions about SN65DP159.

[Q1]
Could DP159 be used as HDMI Retimer ?

I am not quite familiar to the HDMI standard, however, I could see the typical application example in the datasheet page 42.
Is the answer "NO" as DP159 input needs to be AC coupled ? (Because, DP159 input is Display Port)

[Q2]
When would SN65DP159 be active (RTMed) officially ?

Thanks in advance.

Best Regards,
Kawai

  • 0
    TI__Mastermind 23815 points
    Hi Kawai-san,

    SN65DP159 is DP++ to HDMI redriver/retimer in the next weeks we will release an HDMI to HDMI redriver/retimer.
    I will contact marketing representative so he can give you information about SN65DP159 RTM date and HDMI retimer.

    Regards
  • 0
    TI__Genius 9315 points
    Hi Kawai-san,

    The SN65DP159 & SN75DP159 device can automatically configure itself as a re-driver at data rates <1 Gbps, or as a retimer at more than this data rate.
    This feature can be turned off through I2C programming.
    The SN65DP159 & SN75DP159 receiver supports both adaptive and fixed equalization to clean up inter-symbol interference (ISI) jitter or loss from the bandwidth-limited board traces or cables. When working as a retimer, the embedded clock data recovery (CDR) cleans up the input high frequency and random jitter from the video source. The transmitter provides several features for passing compilance and reducing the system-level design issues, which compensates for the attenuation when driving long cables or high-loss board traces.

    We are about to RTM this device in the next few days.

    We also will be releasing TMDS181 in the next two weeks which 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 suppor 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.

    Regards.
    JC
  • 0 in reply to Jose Carlos Gil
    Guru 19775 points
    Hello Moises-san and JC-san,

    Thank you for your reply and the detail information.

    I had the information about the new TMDS181 device. However, I was just wondering that if SN65DP159 could be used as HDMI2.0 Retimer by AC coupling the input, because I thought both DP++ and HDMI would be TMDS signal but different offset voltage.

    I will promote TMDS181 for HDMI2.0 retimer required application, but what do you think about the above ?

    Best Regards,
    Kawai
  • 0 in reply to Kawai
    TI__Mastermind 23815 points

    Hi Kawai-san,

    That's exactly what SN65DP159 is intended to.

    In the inputs it will receive HDMI data using DP physical layer, that's way AC capacitors are needed (This is what DP++ does).

    In the outputs it will have the same HDMI data  but in HDMI physical layer(TMDS).

    You can see this just as a level translator with inputs needing AC capacitors.

    Regards

  • 0 in reply to Moises Garcia
    Guru 19775 points
    Hello Moises-san,

    My apologies for my delay.
    As a result, I understood that SN65DP159 could be used as HDMI2.0 Retimer as long as input HDMI signal is AC coupled.

    HDMI2.0------>Cap------>SN65DP159-------->HDMI2.0

    However, I will promote TMDS181 for HDMI2.0 toHDMI2.0 retimers.

    DP++ to HDMI2.0 application : SN65DP159
    HDMI2.0 to HDMI 2.0 application : TMDS181

    Best Regards,
    Kawai
  • 0 in reply to Kawai
    TI__Mastermind 23815 points
    Hi Kawai-san,

    This is right:

    DP++ to HDMI2.0 application : SN65DP159
    HDMI2.0 to HDMI 2.0 application : TMDS181

    Just remember we have SN65DP159, SN75DP159 depending on the temperature range
    SN65DP159 = -40 to 85
    SN75DP159 = 0 to 85

    Regards