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TLK10232: Only 1 channel

Yoshihiro Okabe
Prodigy 150 points
Part Number: TLK10232
Other Parts Discussed in Thread: TLK10031

 

Hi Team,

 

We are using TLK10232 with 10GBase-KR . As you know, there are 2 channels (A-port, B-port) in the device.

 

I have a questions.

 

 When I use only 1 channel, does other channel have to disable it?

 

Regagrs,

 Yoshihiro

  • 0
    TI__Genius 10250 points
    Hi Yoshihiri-san,

    You can power down the other channel using PDTRXB_N pin (asserted low) to disable channel B. In either case, the unused channel pins can be left floating.
    Notice that TLK10031 is 1-channel device similar to TLK10232.

    Regards,
    Yaser
  • 0 in reply to Yaser Ibrahim
    Prodigy 150 points
    Yaser-san,
    Thansks your response.

    Customer reports us that the number of FEC(Correct/uncorrect) is different from either using only one channel or using both channel. Are there any difference of the FEC number when disable or enabled an unused channel,?
    So let me know that.

    Regards,
    Yoshihiro
  • 0 in reply to Yoshihiro Okabe
    TI__Genius 10250 points
    Yoshihiro-san,

    If I understand this right, you are saying the customers sees different number of errors when using 1 channel vs. when using 2 channels. There could be such a difference due to co-channel interference. Basically, signal quality degradation due to interference from the other channel, when using 2 channels.

    Regards,
    Yaser
  • 0 in reply to Yaser Ibrahim
    Prodigy 150 points

    Yaser-san,

    Thanks your response . Your understanding is right. 

    Customer reports us that signal quality degradation due to interference from the other channel, when usinto g 2 channels  .

    Have you ever  seen  such  a problem? 

    Regards,

    Yoshihiro

     

  • 0 in reply to Yoshihiro Okabe
    TI__Genius 10250 points
    Yoshihiro-san,

    I haven't seen it specifically for this device. What is the difference in the error rate between using 1 channel and using 2 channels? In general, it is always possible for 1 high-speed channel to affect the other neighboring channel, especially if the signals for both channels are routed very close and parallel to each other on the PCB.

    Regards,
    Yaser