Lpc2000

--- In lpc2000@yahoogroups.com, "SR" <emddjava@y...> wrote:
> I saw a previous post that stated that the LPC2xxx can reach
> 115200kbps without modification, How do you do this? I can't seem to
> get the data right at 115200

ok...You MUST do the following:
1.  In general, you MUST design in your main clock crystal to be some 
multipe of 9600. Personally, I use 11.0592Mhz, 14.7456Mhz and 22.
1184Mhz.

2.  Most PC UARTs can accept small variances from the 9600/schema, but 
in general, it is not a good idea to do this!

3.  Next, you MUST get your UART device driver fully operational at 
9600 baud, or some slow reliable baud rate...then later, kick the 
thing up to 115200

I am currently using an LPC2214 on several projects with 115200, and 
the thing seems to be working fine.

I also, have written a full interrupt-driven service routine. At these 
115200 speeds, it is a good idea to make your service as 
time-efficient as possible...Plus it is a VERY good idea to enable 
those 16-deep FIFOs when operating at 115200 baud

Ken Wada