How can I set the DFE (Decision Feedback Equalization) in Adaptive Mode for the 10G transceivers inside Cyclone 10 GX?
Hi All, Did anybody have any experience with setting up the DFE (Decision Feedback Equalization) for the 10G transceivers inside the Cyclone 10GX? The easy way to set the analog parameters for sign...
HI,
Can you confirm again are you using Cyclone 10 GX or Arria 10 FPGA ?
The reason I asked is due to Cyclone 10 GX doesn't support DFE, only CTLE and VGA.
You can check it out via Cyclone 10 GX NativePHY IP or below user guide link
https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/cyclone-10/ug_cyclone10_xcvr_phy.pdf
There is no mention of DFE in Cyclone 10 GX. DFE is only supported in Arria 10 FPGA.
Thanks.
Regards,
Deshi
Hi Deshi,
Thanks so much for the quick reply … yes, we are using the Cyclone 10GX … NOT the Arria 10 … but, I had no documentation for the DFE feature, so I tried to read anything that I found on-line, thinking that I can apply it somehow to our Cyclone 10GX.
I am surprised by your answer, though. The Cyclone 10 GX supports DFE … I am able to set it using the TTK in Quartus (see my previous message) … all 3 modes: OFF, Manual or Adaptive … we are also able to set various taps using the Assignment Editor or even using the PHY IP gen … the problem with these two last options is that we have to set specific values for specific taps … I want to set ONLY the Adaptive mode, so I do not bother with these tap values … as I said, I can do that now with the TTK … BUT, this is not something that I can do for a series production.
So, once again why do you say that DFE is not available for Cyclone 10 GX?
Looking forward to hearing from you.
Bogdan
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