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Re: Serial communication



The RS-232 driver circuit usually only support up to 115200,
although on newer boards they might support up to 230400 (250kbps).
If you need high speed serial communictaions you should bypass the RS-232
drivers and use the 3.3V signals.

The RS-422/485 drivers support up to 2.5Mbps but I have made successfull tests
at 6.5 Mbps.

/Johan

----- Original Message ----- 
From: Peter Fredriksson <peter.fredriksson@xxxxxxx.se>
To: <dev-etrax@xxxxxxx.com>
Sent: Thursday, October 25, 2001 09:09
Subject: Serial communication 


> Hi all,
> 
> I have an etrax 100 LX devboard and am trying to use the serial port at 
> higher speeds than 115200 bits/s. When I read the docs for the etrax 
> processor it states that it should be possible to run at 1,8 Mbit/s. Is 
> there any restrictions at the dev-board or any configuration in the linux 
> kernel to make this work.
> 
> Has anyone successfully used the serial ports at the devboard at 230400 or 
> 460800 kbit/s?
> 
> Please help me with this one, I have asked this question before but did not 
> get any response...
> 
> Thanks,
> 
> Peter Fredriksson
>