[Arm-netbook] [EOMA68] RS232 on SoCs

[Henrik Nordström]

lör 2013-08-31 klockan 14:36 +0100 skrev luke.leighton:

> so, really, hmmm... *ponders*.... actually this EOMA68-A20 CPU Card
> breaks the specification: the pins should be tri-state (floating).  i
> didn't realise the A20 would... arg ok.

There is very little guarantees about tri-state at power-off state.

> however if protecting dash molly-coddling people it means putting a
> buffer on the CPU Card.

Yes. Less chance for error that way. But makes it harder to use the pins
for other function. buffers are uni-directional.

Regards
Henrik