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TIDA-010262: PoDL (PSE controller, PD controller) for 10BASE-T1S

Part Number: TIDA-010262
Other Parts Discussed in Thread: TIDA-010261

Tool/software:

Sorry I don't know much about PoDL.

Is there a PoDL (PSE controller, PD controller) for IEEE802.3cg 10BASE-T1S?

If it supports 10BASE-T1L, is it also OK for 10BASE-T1S?

  • Hi,

    the PSE and PD controller is in this design implemented in a discrete way, for 10BASE-T1L.

    For T1S, you do PoDL in a different way, as you have a multidrop architecture. The most simple approach uses a passive coupling network and no PSE or PD controller.

    Best regards,

    Steffen

  • Thank you for your response.

    For T1L, you use a PSE or PD controller, and for T1S, you use a passive coupling network. Is this approach better for cases other than TIDA-010262?

    I am not familiar with the concept of a passive coupling network and would like to learn about it. Could you recommend some websites that explain it?

    I have the following standards documents:
    "IEEE Std 802.3cgTm‐2019"
    "IEEE Std 802.3Tm-2018"

  • For T1L, you can also use a passive network only. If you better use a PSE and PD or an engineered PoDL network depends on your system. 

    For T1S, there is no IEEE standard defining a PSE and PD yet.

    On a passive coupling network, you can check the schematic of https://www.ti.com/tool/TIDA-010261 on page 5 and just use this network without the PD controller. The IEEE802.3cg standard you have, also gives an examples on PSE and PD schematics.

    Best regards,

    Steffen

  • Thank you for your response.

    I'm going to learn about the TIDA-010261 schematic.