Are there any 10/100 Ethernet switch (or hub) chips available that require minimal support? I only need a simple unmanaged switch (or hub) with 3 ports with automatic crossover. This needs to work in a rugged environment with an extended temperature range.

I know there are complete devices on the market, but space is a premium for this embedded application.

If it is not simple, then I will have to enlarge my enclosure to accomidate an off-the-shelf unit.

Thanks,
Dale

 

Hey, i just ripped a hub apart. There is only one chip in it; AD7988. That is out of an 8 port hub, though, so there may be something a bit smaller. It would be cheaper to buy one. They are pretty small.

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Thanks Marks, but I read somewhere that AMD is discontinuing their Ethernet chipset offerings. I don't want to design with potentially obsolete parts.

I think I will just rip apart an ADAM-6510 and RTV it down to another board that will have my circuitry. When it is in its plastic box it is too large, but perhaps I can make it fit if I glue the naked board to something.

Thanks,
Dale

 

check out broadcom ... they make the silicon driving much of todays low to mid-end networking hardware

specifically the BCM5385 is a 5 port switch (IC) with built in copper PHYs.

according to the datasheet, it is available in a 324 pin 19mm² package ... not what I'd call breadboard friendly!

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