[Arm-netbook] EOMA server standard

[luke.leighton]

On Fri, Oct 26, 2012 at 5:52 PM, Baybal Ni <nikulinpi at gmail.com> wrote:
> On 26 October 2012 09:31, luke.leighton <luke.leighton at gmail.com> wrote:
>>  *that's* a good standard.  yes.  take the 8 USB wires.  you can
>> auto-negotiate all the way from USB1.1 right the way up to USB3.
>> that's _great_.  likewise with 10/100/1000 ethernet.  8 wires,
>> auto-negotiation.  likewise with SATA: exact same wires, you can
>> auto-negotiate all the way from 150kbit/sec right up to 6gbits/sec.
>
>
> Don't forget that autonegotiation works over any amount of wires. So
> it's possible to mandate that the backplane will ALWAYS have 8 lanes,
> and card can use either 8 or 4.

 for PCIe?  my understanding is that PCIe can down-level negotiate
even to single-lane, and also detect the version of PCIe (1, 2, 3
etc.)

 so again, yes, thank you baybal - PCIe is another good example.  hell
of a lot more wires, which is why i'm reluctant to add it to any
standard, but it's a good example.

l.