mebs / CM4-NAS

Raspberry Pi CM4 based NAS solution board

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Ethernet MagJack should be changed

mebs opened this issue · comments

commented

The current ethernet jack the board expects is this one: https://www.digikey.ca/en/products/detail/bel-fuse-inc/0826-1G1T-43-F/2107992

There are a couple issues with it:

  • It's expensive (costs more than a PCB)
  • It's not available on LCSC and certainly not for PCB assembly on JLC

Should be changed for another ethernet jack with magnetics that would be cheaper and available for PCB assembly.

hey mebs,

I changed the MagJack, if you like to view, and I also did some minor changes to the length of some traces

commented

hey mebs,

I changed the MagJack, if you like to view, and I also did some minor changes to the length of some traces

Thank you @terramande! Did you do that through a pull request? I don't see any.

hey mebs,
I changed the MagJack, if you like to view, and I also did some minor changes to the length of some traces

Thank you @terramande! Did you do that through a pull request? I don't see any.

no don't know how and I ask if you interested ;-)

i made a fork, I don't know how to make a pull request :-)

i also change the dimension of the board a little for the magjack

  • try to route the signals for the ethernet the same length
  • also try to make all other differential pairs the same length