Em 5/7/2010 11:26, Xiaofan Chen escreveu:
> On Mon, Jul 5, 2010 at 10:01 PM, Olin Lathrop <olin_piclist@embedinc.com>=
 wrote:
>> solarwind wrote:
>>> I'm trying to design a multi master protocol for RS485 networks
>> Why RS485?  That's so 1990s.  Unless that is something specific to the
>> requirements (and it doesn't sound that way since you seem to be free to
>> design the protocol), you should seriously look at CAN.
> The only thing is that CAN is stuck at 1MHz. With RS485, it can be
> much faster. It can also be upgraded to M-LVDS to achieve much
> faster speed. But I am not so sure about the OP's speed requirement.


And don't forget the distance, usually up to 1200m @ 100kbps (others say
3000m, speed unknown).
It seems that 100m @ 1Mbps and 10m @ 10Mbps are feasible.


Isaac
__________________________________________________
Fale com seus amigos  de gra=E7a com o novo Yahoo! Messenger =

http://br.messenger.yahoo.com/ =


-- =

http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist