Lpc2000

Hi Chris,

don't know the specifics (penalties) of the RS422/485 but the serial
interface can go to a maximum of CPU clock divided by 16. So, running
at 14.7456 it could go to 921.6 kbaud. Make sure that the divider for
the peripherals (VPBDIV) is changed to 1, default after reset is
divide by 4. If you go to 1 Mbit, you should have a 16 MHz clock or a
multiple thereof. 

Cheers, Bob


--- In lpc2000@yahoogroups.com, "Charles R. Grenz"
<charles.grenz@s...> wrote:
> Hi Chris,
> 
> 	From my testing of RS422/485 and a LPC2106 running at 14.7456MHz
> external clock, 460.8K baud and maybe, just maybe 921.6K.
> You must also have 120 ohm resistors on the master and the last
slave unit
> as close to the RS422/485 chip as possible.
> 
> Charles
> 
> -----Original Message-----
> From: Chris Graham [mailto:chris_e_gr@y...] 
> Sent: Sunday, January 09, 2005 8:40 PM
> To: lpc2000@yahoogroups.com
> Subject: [lpc2000] Max Baud Rate of LPCxxxx UART?
> 
> 
> 
> What is the maximum baud rate that the uart of these devices can
support? 
> I'm interested in driving an RS485 link at up to 1 mbps.
> 
> - Chris 
> 
> 
> 
>  
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