• State TI Thinks Resolved
  • Locked Locked
  • Replies 2 replies
  • Answers 1 answer
  • Subscribers 33 subscribers
  • Views 264 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.

DS560DF410EVM: Support for highly dynamic communication channels

ArTzy
Mastermind 20120 points

Part Number: DS560DF410EVM

Hi Experts,

We'd like to ask assistance on the following issue:

Test setup:

Evaluation board DS560DF410EVM. RX0 is connected to external clock source at 6.25 Gbps (matching the target Baude rate for PAM-4). TX0 is connected to RX1 via a physical channel (attenuator + amplifier). DS560Latte software with standard script is used for configuration.

  • TX0 is configured as PRBS generator
  • RX1 is evaluated with BERT, 1D-Eye-scans, FOM readings, and RX coefficient read back

Issue:

Especially with dynamic communication channels (change of gain of 3 dB in periods of less than 300s), we are facing transmission errors and incomprehensible RX coefficients. So far, we have exploited all the configuration options documented in the programmer guide (Literature Number: SNLU294 DECEMBER 2022), but with no improvement.

Request:

Are there any configuration options to improve auto-adaptive RX coefficients for highly dynamic channels? Target dynamic period of channel is 0.2 s.

Regards,
Christian

  • 0
    Prodigy 10 points

    We would really appreciate receiving any information beyond what is contained in the documents “Programmer's Guide SNLU294”, "User's Guide SNLU319" and the full data sheet. Anything related to the auto-adaptation mechanism will help us find a solution to the problem.

    Thank you,

    Christian 

  • 0 in reply to Christian Panhans
    TI__Mastermind 42028 points

    Hi Christian,

    Sorry for the delay.  There is not a lot of configurability with the background adaptation.  Besides enabling background adaptation (enabled by default), there is not another parameter that I'm aware of that would impact this.

    Thanks,

    Drew