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Ethernet Module is on Schedule

A project log for The Cheapest RISC-V 64 Computer (by Now)

Want a piece of RISC-V hardware to play with, but are concerning with the price? Why not build one by yourself with a cost less than 10$!

sdtelectronicsSdtElectronics 12/18/2021 at 12:411 Comment

D1s supports a wide variety of peripherals including an Ethernet MAC. It shares pins with the DVP camera and I designed this LAN8720 module which can be connected to the onboard FPC connector for camera. Let's see whether this will work.

BTW, the hw v0.3 design has been released. This is a minor revision which fixed a issue at USB connectors. There was one of the CC pins connected to the resistor which causes problem when connecting to a USB-PD DFP or DRP device. Now both CC pins are connected to resistors respectively.

Discussions

gachijaja wrote 01/06/2022 at 07:19 point

Great! Endless development progress!

A couple of questions.

- Is there any specific reason to use the LAN8720 10/100 RMII PHY instead of a GbE PHY?

- Is there any RMII pin conflicts against the raw serial console ports PE2/PE3?

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