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| ethanhs | Hi _florent_, sorry to bother you, but would you have any suggestions for parts for adding ethernet to the Acorn? I think that is probably the cheapest solution for my problem. My Google skills seem to be failing though, all I can find are SerDes chips I'd have to solder directly to, which I'd rather not :) Oh and some ethernet PHYs but it seems without SerDes I can only do 10Mbit/s directly from the FPGA... | 01:00 |
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| zyp | the 20-pin socket has 12 IO which should be enough to hook up a RMII PHY if 100 Mb/s is enough | 01:22 |
| zyp | otherwise if you need gigabit, the easiest way is probably to make a board with an m.2 socket and a sfp socket | 01:23 |
| ethanhs | zyp: ah interesting, thank you for the information, do you have a link to information on how I'd set up 100Mb/s connection with such a PHY? And/or a suggestion of how to get one | 01:23 |
| ethanhs | sorry not how to get one but which to get, most seem to be available only at volume | 01:24 |
| ethanhs | 100Mb/s is plenty for my needs, just need to stream some video | 01:25 |
| zyp | something like this, perhaps: https://www.waveshare.com/lan8720-eth-board.htm | 01:26 |
| tpb | Title: LAN8720 ETH Board Ethernet module, 10/100 Ethernet Transceiver LAN8720 onboard (at www.waveshare.com) | 01:26 |
| zyp | but I believe you'd have to remove the oscillator so you could feed it ref_clk from the fpga, IIRC the acorn doesn't have any clock inputs available | 01:26 |
| zyp | and I'm not sure how much luck you'd have running RMII over jumper wires either :) | 01:27 |
| ethanhs | ah I see, thank you for the link. Unfortunately it seems if you want cheap, ethernet, pcie on an FPGA you can only pick 2 (or you have to hack something together) | 01:29 |
| ethanhs | well, maybe I will give this a try and see how it works out | 01:33 |
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