• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 399 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.

Classification of UPoE and BT

chentsu chung
Mastermind 6180 points
Other Parts Discussed in Thread: TPS2379, TPS2373

Hi Team,

For the classification priority of modeA or modeB, is there any rule for UPOE and BT?

For example: UPoE's classification will identify PD as modeA, then modeB

802.3BT will identify modeB first, then modeA

Is this true?

Thank you very much,

C.T.

  • 0
    TI__Guru 71526 points

    Hello C.T.,

    Please identify the device you are using or planning to use in this design.

    Thank you,

    ~Leonard  

  • 0 in reply to LeonardEllis
    Mastermind 6180 points

    Hi Leonard,

    May I ask is this about device? I thought it's about the UPoE and IEEE802.3bt standard?

    If use TPS2379 as UPoE device, and TPS2373 as 802.3bt device, then how's the identification priority?

    Thank you.

    C.T.

  • 0 in reply to chentsu chung
    TI__Mastermind 41800 points

    Hi Chentsu,

    The slight difference is that the third finger must be able to be processed from BT PSE. TPS2379 cannot process a third finger but the TPS2373 can if wanting to do dual signature PoE. Note a .BT PSE for dual signature will look for Class 4 current in the first two fingers and a Class 0 current in the third finger when in dual signature structure. A forced UPOE PSE will look for Class 4 on two fingers on each channel.

    Please let me know if this clarifies your question. Thanks!