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Non-proprietary Ethernet tranceiver

A placeholder project because I got a request for this and it will have to be done anyway one day.

yann-guidon-ygdesYann Guidon / YGDES
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You might know I despise USB so the best way to communicate, so far, is Ethernet. It's a bit convoluted but it's now very well understood and supported everywhere. I remember seeing attempts in HDL a decade ago but lost the links. I also like the Wiznet modules but would love to integrate some of their functionalities in a FPGA to cut prices and complexity (and prevent the issues that stem from single-source parts). Oh and it's something I have been asked to do, in the past. So this project will start as a place to gather all the necessary information.
And I'll start with a 10BaseT tranceiver. That should be enough for simple communications, I'm not aiming at high performance here. Yet.
Co-conspirators are welcome, drop me a PM if you're interested !

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Yann Guidon / YGDES wrote 04/15/2024 at 01:21 • point

https://hackaday.com/2024/04/10/homebrew-network-card-with-no-cpu/ !

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Yann Guidon / YGDES wrote 01/19/2023 at 09:37 • point

How did I miss https://hackaday.io/project/168551-etherpic ? #EtherPIC :-D

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Yann Guidon / YGDES wrote 12/21/2022 at 21:21 • point

http://www.aholme.co.uk/Ethernet/EthernetRx.htm

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Yann Guidon / YGDES wrote 12/19/2022 at 20:15 • point

https://hackaday.com/2022/12/19/its-ethernet-from-an-spi-interface/

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Yann Guidon / YGDES wrote 08/26/2022 at 22:35 • point

https://hackaday.com/2022/08/26/bit-banged-ethernet-on-the-raspberry-pi-pico/

https://github.com/kingyoPiyo/Pico-10BASE-T

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Frank Buss wrote 12/20/2018 at 16:50 • point

I tried this some years ago, but didn't finish it. A good start might be this project:
http://www.pldworld.com/_xilinx/html/ref/xsvboard/stack/stack.htm
I also did some early tests with sending and receiving ethernet packets with a transceiver chip and some VHDL code, but IIRC I never got the receiving part right, and was very low level, even without ARP, just some hard coded ethernet packets.
It is a lot of work. I don't know if it is worth the trouble. Nowadays there are so many microcontrollers with integrated ethernet (plus the standard external EMAC type transceiver chip), just use one of these.

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Ted Yapo wrote 12/20/2018 at 16:04 • point

There is an FPGA bit-banged 100Base-TX Ethernet implementation in PoC||GTFO 17. You might find some ideas there.

https://www.alchemistowl.org/pocorgtfo/pocorgtfo17.pdf

I have the bible-bound edition :-)

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