azonenberg changed the topic of ##openfpga to: Open source tools for FPGAs, CPLDs, etc. Silicon RE, bitfile RE, synthesis, place-and-route, and JTAG are all on topic. Channel logs: https://libera.irclog.whitequark.org/~h~openfpga
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<florolf>
azonenberg: i was just doing some sanity checking before ordering the board. what were the target impedances for the tracks in the sfp-to-sma board and how did you calculate them? this targets the 4l oshpark stackup, right? i'm getting 40 ohms single ended impedance for the gcpw part, for example
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<azonenberg>
Let me check. Yes, it's targeting 4L oshpark
<azonenberg>
I did this design quite some time ago and it is possible i screwed it up but it works well