• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 34 subscribers
  • Views 564 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

TPD13S523 implementation

Dmitry Vasilenko - Arrow
Expert 1380 points
Other Parts Discussed in Thread: TPD13S523, TPD12S521, TPD12S520

Hi,

my customer uses TPD12S520. Is it worth to advise to switch to TPD13S523 in the designs of a low-cost STB? When should we advise to use TPD12S521 and when - TPD13S521?

  • 0
    TI__Intellectual 2520 points

    TPD12S520 - Use it only on Receiver side.

    TPD12S521 - Use it only on Transmission Side.

    TPD13S523 - Use it on transmission side.

    TPD13S521 - Doesn't exist. Were you referring to 523 itself?

    Both the 12S521 and the 13S523 have a current limiting switch. Hence they are more useful in the transmission side of the HDMI. If the cusotmer is using the UTILITY pin of the HDMI, then 13S523 provides ESD proteciton for that pin too. If its being left as NC, then 12S521 is useful. Another difference: The 12S521 has a level shifter on the control lines. 13S523 doesnt have any level shifting,

    Hope ths information was helpful. Please ping back if you have any additional questions.

  • 0 in reply to Vivek Shankar
    Expert 1380 points

    Hi, thank you for your clarification.

    The parts TPD12S520/521 have additional functionality for DDC. Is it critical for application as Set-top-box? Shall my customer support this function in any case (so if choosing the TPD13S523 they need additinal part)?

  • 0 in reply to Dmitry Vasilenko - Arrow
    TI__Intellectual 2520 points

    Dmitry,

    HDMI Compliance REQUIRES the SCL and SDA signal levels be 0-5V. Typically, the signal levels in the application are around 1.8V (requires less power). But this can vary from application to application. Incase their application signal levels are 1.8V, then they will need a level translator to shift the voltage levels and be HDMI compliant. The TPD12S520/1 has an integrated Level Translator. If their application is already running at 5V or if they already have level translators in their system, they can use the TPD13S523.