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TLK10232: TLK10232 High Speed Interface Loop Back

Part Number: TLK10232

Hi. I would like to know if exist clear line loop on High Speed interface.

I mean physical loop Rx to Tx without any other internal schematics like clock recovery etc.

Thanks,

Yuli

  • Hi Yuli,

    The deep remote loopback is able to connect TX with RX physically. Please take a look into Figure 5-6 of TLK10034 datasheet.

    Best Regards,

    Luis

  • In reply to Luis Omar Moran:

    Hi, Luis
    According to the Figure 5-6 this is deep loopback - includes all schematics in the pass.
    I'm looking for loop back as close as possible to High speed interface.
    I actually need this loop in 1G mode.

    Regards,
    Yuli
  • In reply to Yuli Kosinovsky:

    Yuli,

    Please take a look into the TLK10034 datasheet (includes the block diagram for every loopback), there are several types of loopback, is there any useful for you?

    Thanks,
    Luis
  • In reply to Luis Omar Moran:

    Hi, Luis.

    Nope. None of them is suitable for me.

    Because internal schematics is involved in data path.

    The problem is auto negotiation process 

    The HiF side is connected to device with AN.

    This will operate correctly with true physical loop.

    If TI PHY can be configured as shallow local loop (with HI side Tx connected to Rx) so why it cannot be connected in remote loop?

    Regards,

    Yuli

  • In reply to Yuli Kosinovsky:

    Hi Yuli,

    Are you looking this kind of loopback?

    If not, please provide me a block diagram of your needs.

    Thanks,

    Luis

  • In reply to Luis Omar Moran:

    Hi Luis.

    I need loop like shown in RED arrows.

    Thanks

    Yuli

  • In reply to Yuli Kosinovsky:

    Hello Yuli,

    This loopback is not possible since the main purpose of the loopback modes is test the system/device. The loopback modes available for this device are shallow local, deep local and deep remote. Maybe you could enable the HS PRBS Generator/Verifier to test this link.

    Regards,
    Luis
  • In reply to Luis Omar Moran:

    Thanks, Luis.

    I see.

    The purpose of this loop is to allow 1G auto neg process.

    In case of deep loop back this is impossible.

    Do you have any idea?

    Yuli

  • In reply to Yuli Kosinovsky:

    Yuli,

    You can perform the deep remote loopback for the 10GBASE-KR mode to test the AN process.

    Regards
    Luis
  • In reply to Luis Omar Moran:

    Hi, Luis.

    Will it work with !g interface?

    Regards,

    Yuli

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