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sung_chul's avatar
sung_chul
Icon for New Contributor rankNew Contributor
3 years ago
Solved

Transceiver output characteristic

Hi- 1. Question In Transceiver Native PHY Intel Arria 10/Cyclone 10 FPGA IP, In 2GHz, Well done But 5Ghz, 101010 Voltage Swing Very low voltage below fig show 10101010 ans 11001100, 1110111...
Kshitij_Intel's avatar
Kshitij_Intel
Icon for Frequent Contributor rankFrequent Contributor
3 years ago

Hi Lee,


  1. It looks like, you are having insertion loss on your channel. Insertion loss generally increases with frequency. To overcome high insertion loss use pre-emphasis.
  2. During characterization 1-8 is probably not going to open the eye that's why we have disabled it.


In general to get the better results, reduce the voltage swing & increase the pre-emphasis.


Majorly 2 things effects on the insertion loss.

  1. PCB material
  2. Width of traces


Also, please go through the guidelines.


https://www.intel.com/content/www/us/en/support/programmable/support-resources/signal-power-integrity/signal-integrity-support.html


Thank you

Kshitij Goel