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DP83822I: Hardware block for auto negotiation

Takeshi Sasaki
Expert 4480 points
Part Number: DP83822I

Hi team,

Could you give me comments on following question?

<Question>

I understand 10BASE-Te line driver is used for auto negotiation. For that case, which hardware block as described in the datasheet as follows is used in auto negotiation or which is not? I guess Jabber block is not used for auto negotiation for example. 

Is following block used for auto negotiation or just used for 10base-te mode communication?

1. Squelch 

2. Active link polarity detection and correction

3. Normal link pulse detection and generation

4. Jabber

5. Collision

6. Heartbeat

7. Loopback

Thank you for your support.

Best regards,

Takeshi Sasaki

  • 0
    TI__Mastermind 26320 points
    Hi Takeshi-san,

    When configured for 10Base-Te, device sends out appropriate signnaling, link-up and can do data transfer. I am not able to understand the motivation behind above query on which internal blocks are used or not used.
    What's the concern customer has while using 10Base-Te ?


    Regards,
    Geet
  • 0 in reply to Geet Modi
    TI__Expert 4480 points

    Hi Geet,

    Thank you for your comments. This information helps the customer, rather than solving concerns. The customer thinks it is benefit that if all internal block for 10BASE-Te is used during auto negotiation, the end user will probably find any kind of abnormal function right after auto negotiation starts. Otherwise, not all internal block is used for 10BASE-Te during auto negotiation, the end user will probably find any kind of abnormal function after using for a long time. Does it make sense about their motivation?

    Best regards,

    Takeshi Sasaki

  • 0 in reply to Takeshi Sasaki
    TI__Mastermind 26320 points
    Hi Takeshi-san,


    These are fully characterised products for both 10Base-Te and 100Base-TX data rates as outlined in datasheet.


    Regards,
    Geet
  • 0 in reply to Geet Modi
    TI__Mastermind 26320 points
    Hi,

    I am closing this thread. Incase you need further assitance on this topic, please open new thread and provide reference to this thread.

    Regards,
    Geet