Lpc2000

Iv\ufffdn Cay\ufffdn wrote:

>Hi !!
>I'm trying to send data with the UART at 115200 bps with a Xtal of 10 Mhz and 
>the PC doesn't receive the data correctly. Is the baud rate limited with this 
>equation?
>
>ratemax = PCLK / (16 x (2 + databits + paritybits + stopbits)
>
>  
>
Crystal: 10000000
PLL MULT: 4
Periph Bus Div: 2
divisor: 4167  desired: 300  actual: 299.976  error: -0.008%
divisor: 2083  desired: 600  actual: 600.096  error: 0.016%
divisor: 1042  desired: 1200  actual: 1199.616  error: -0.032%
divisor: 521  desired: 2400  actual: 2399.232  error: -0.032%
divisor: 260  desired: 4800  actual: 4807.692  error: 0.1602%
divisor: 130  desired: 9600  actual: 9615.384  error: 0.1602%
divisor: 65  desired: 19200  actual: 19230.769  error: 0.1602%
divisor: 33  desired: 38400  actual: 37878.787  error: -1.3573%
divisor: 22  desired: 57600  actual: 56818.181  error: -1.3573%
divisor: 11  desired: 115200  actual: 113636.363  error: -1.3573%
divisor: 5  desired: 230400  actual: 250000  error: 8.5069%


>if this is correct then I can't get this baudrate with 10 Mhz xtal
>
>Regards, 
>
>Ivan
>
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>Yahoo! Groups Links
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-- 
Tom Walsh - WN3L - Embedded Systems Consultant
http://openhardware.net, http://cyberiansoftware.com
"Windows? No thanks, I have work to do..."
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